Flow Testing Hammerhead Performance Engines cylinder heads for Project MIXED UP BOSS!!

[@jaisonbairstow3753]

Personally I'd like to see both. Everything bolted on, dyno run as a baseline. Then do the heads right up and dyno it again

[@jaisonbairstow3753]

Yeah, the extra work for what seems like more of a hobby channel than an income stream would be hard to justify haha. I wouldn't blame them one bit for just going "noooooope"

[@UnityMotorSportsGarage]

@@jaisonbairstow3753 I would love to do both, it becomes a matter of using the available airflow.. We already know that when ported these heads can go to 500cfm! This engine Is going into my truck CASPER. David and I will figure out the best plan of attack and make it happen.. The ideal setup would be to build two separate Engines one mild... And the other Wild! Andy

[@jaisonbairstow3753]

@@UnityMotorSportsGarage always lots of things we'd love to be able to do! I guess I should've said that what I'd like to see is a baseline, then to see the thought process on why you decide to do whichever changes - ie you want to change the shape of your power curve or you can see that port matching would improve something

[@xmo552]

@@UnityMotorSportsGarage Any videos of this head running ?

[@UnityMotorSportsGarage]

@@xmo552 We are in the process of getting it together now! I've been tied up with work and haven't had much time to mess with it... But now it's game on... You will get to see the build plus we are going to run it on the engine dyno! Thanks for Watching and please Subscribe! It's going to be good! Andy

[@triumph12408]

Id like to see both, both ported & as cast

[@StainlessTIG2]

That’s cool that these Ford heads will work on the Ls with an Lt camshaft. Ford and Chevy will always be kings of racing!

[@1990rscamaro]

Andy I would like to see what I can learn by watching you and David Visard do some additional work to these heads. Either way it will be a great build!

[@terryg1129]

Out of the box on a 427sb

[@jeffreylevin1266]

Andy, since your asking, I’d like to see the heads stock. I have a 351 Windsor, show me what these heads can do!

[@bretflickinger1868]

Love to see them out of the box on a stock 351w block with forged internals as a baseline bullet.

[@keithbailey5923]

Good for 10,000 rpm

[@deepjunkgarage]

Tons of good information ! I would like to see you and David work those heads to their full potential. Great video, appreciate all your work !

[@79beans347]

Yeah let's see them maxed out then reflow test them

[@DragBoss351Cleveland]

Great Video Andy. Very cool info. My A3s ported by Morgan are close to these, but have a ton of work to them. Can't wait to see how they work out.

[@UnityMotorSportsGarage]

Tim, thanks brother for the kind words.. Greg told me that the CNC ported version he offers flows 477 CFM.. EFI University has pushed a set to 500cfm.. to me that is just crazy... Andy

[@DragBoss351Cleveland]

@@UnityMotorSportsGarage Very Bad to the bone. I think you should test the head out of the box, and ported...

[@MsKatjie]

I am glad my search engine got me to your channel, Andy. A lot of people people would like to see the heads modified but as you hinted at, the increased flow would have to be used up. Time and money are generally major factors. Stating the obvious. I my self would like to see what the blue bottle would do! Regards to all.

[@UnityMotorSportsGarage]

Thanks for coming over and checking us out! We are going to run it NA on the dyno.. but when it goes in CASPER all bets are off concerning that blue bottle! Lol.. my goal is to get CASPER in the 5's in the 1/8th mile which would be a real low 9 or high 8 in the 1/4... It's going to be hard getting 4000lbs up and moving that fast! Andy

[@paintnamer6403]

It may have been 70 years ago when Ardun made OHV hemi heads for the flat head fords that could make good power. Now let's see how Hammerheads make history, I think the right guy is using them.

[@bluecollarcook]

I tend to agree.

[@damianbrennan2258]

Hi David r u from UK I think u one of the smartest man on heads keep up the good work

[@MrValhem265]

Man thats some serious Hardware thanks mate from Downunder.

[@UnityMotorSportsGarage]

Yes they are... TONS of potential... Andy

[@nickpanaritis4122]

Great set of heads. Nice design and performance.

[@UnityMotorSportsGarage]

Thanks Nick for coming over and checking out my Channel! I'm a huge fan of yours! I can't wait to see how much power we make with these heads... Andy

[@lilo2469]

Andy Ty , these heads will not be complete with out DV touch 👍

[@davidandrew2610]

Hi Andy , another great vid , I really like your heads mate . My 5 cents build your engine wth the as cast heads , dyno and race to validate the heads and combo , build a base line and in the future you and DV could take us through your porting and race prepping and flow bench testing then into casper for some real world drag race validation . Keep up the good work buddy 👍👍

[@tracywraley6892]

I would like to see the heads ported I think if you port them you will be able to push 1000 hp or more depending how you do the porting

[@177SCmaro]

For a 2 valve head these things flow really well. To put it into perspective they appear to flow similar to the stock Voodoo 4 valve heads off GT350.

[@Jimmyk63]

Thank you for your insitghts and video 🙂❤👍

[@chestrockwell8328]

I agree with other commenters, Do some voodoo magic on these already stellar cylinder heads; only a true expert can make a great set up even better.

[@Rayce3673]

As impressive as they are, I would like to see what they are capable of with some porting.

[@bobwhite5440]

cnc hammerhead shark looks cool on the end of the head, what a logo. if possible, it would be great if you could put the heads on stock, use them that way for awhile, see what they can do and then modify them at a later date so you can compare the two performance levels. budget permitting of course.

[@bluecollarcook]

That is a sweet looking logo.

[@Jvcomet]

Amazing. Like to see both.

[@UnityMotorSportsGarage]

We have talked about it and you might just get to see that... the thing is as of now the goal for MIXED UP BOSS is to make 750hp.. which shouldn't be an issue at all with the current flow of the heads... Once we port them it will need to make mega power to use the additional airflow.... SO I have an Idea that involves a Front engine Dragster as the new home, but that is down the road a bit... Please Subscribe so you can follow the progress as it happens! Andy

[@jefflebo5836]

Possible to run these on 8.2 sbf? Would love to see a 363 build - one with a street cam, another test with race cam.

[@PatriotPlus179]

Holy CFM Batman! Those numbers put AFR and Trickflow to shame. We won't even mention Edelbrock anymore 8(.

[@UnityMotorSportsGarage]

Wade, you are right... To be an as cast port it really can't be beat... There are some serious heads out there that can compete with it on a MAX Effort deal but I believe this design is a game changer! Thanks for Watching! Andy

[@jamest.5001]

Imagine how they would look on an LS engine, instead of the tiny valve covers, those huge heads and rocker covers!

[@CRUSHFACTORPC]

The BIgger question with this great engineering prowess that is taking place make Direct injection possible with these heads

[@UnityMotorSportsGarage]

While I'm sure it could be done... Greg Brown of Hammerhead Performance Engines would know more about this as he offers both Solid castings and heads with coolant passages... For this build I'm doing a Nostalgic looking build.. thanks for Watching! Andy

[@69JANKS]

Man that’s knocking on 400cfm at that 700-800” lift .....outta the box. Is there a cnc program for it? It’s definitely badass & looks the part 👌🏼🏁

[@UnityMotorSportsGarage]

Yes Hammerhead offers CNC porting for it that will go over 435cfm.... for ALL out stuff they can go over 500cfm!!!! Andy

[@69JANKS]

@@UnityMotorSportsGarage my gosh😳 that’s big block territory right there 💪🏼🏁..... & the fact they look cool & badass.... Nice set up dude, will be good 👍🏼 Janks.

[@hieronymus..bosch8532]

I'd like to see a comparison with chi heads . Like to see these in the engine masters challenge, chi heads do really well there.

[@UnityMotorSportsGarage]

Greg Brown (Hammerhead Performance Engines) has won the Race Engine Challenge back to back with these heads.. Thanks for Watching and please Subscribe to follow along on the buildup of MIXED UP BOSS here in the near future! Andy

[@russelljackson7034]

Right on

[@UnityMotorSportsGarage]

Thanks for Watching! Andy

[@jimkillen1065]

I not a expert , I only know what I been told . After hearing the cfm I thought they can support around 800 hp .Very interesting watch . Seems like I read of some Hemi heads for a LS motor but never saw them . HP cost money and how fast do you want to go is what I been told but experience has show that cylinder heads is a place to spend money .

[@UnityMotorSportsGarage]

These are the heads on the LS.. Greg Brown of Hammerhead Performance Engines is the mastermind behind these.. with the cam I'm running 259/263 @ .050 .675"/.705" solid roller we are shooting for 750hp on pump gas.. something I can still drive to work and on the weekends! Thanks for Watching and please Subscribe to follow along with the build! Andy

[@Robert-mn8gc]

Apparently Greg is going 2 upsize the valves on his mighty Tall Deck Windsor that made 928 hp & 674 ft lbs tq. It's already breathing incredibly well & not far off a race head . So my guess is these changes will tip it over the edge 2 a race head . What's Ur thoughts on that .

[@UnityMotorSportsGarage]

Robert you are right! There are ported versions now getting over 500 cfm and have made over 1100hp NA! So there are plenty of room to grow with these heads.. Thanks for watching Andy

[@Robert-mn8gc]

@@UnityMotorSportsGarage 1100 hp on what fuel ⛽️ Andy . I would love ❤️ 2 c these heads with a full billet rocker cover with the stands 4 MSD Coil Packs & Crank Trigger . What cu inches , if u know 4 the 1100 hp. I personally like a 441 cu inch Windsor with 4.125 bore × 4.125 stroke . The 2nd engine l would love ❤️ 2 C is all of the Above with a mini tunnel ram & Whipple Cupronickel Intercooler & 4.5ltr or 3.8 ltr Whipple Supercharger on top . Would be seriously sensational 👏. Billet Sony Bryant Crank , Billet Oliver Rods & Billet Diamond Pistons with coatings on them & all bearings. With efi induction. 4 a Eliminator 19 or 21ft Daytona Jet Boat 🚢. Greg Brown has done a marvellous job 👏 on these heads 👏 👍 👌 😀

[@KennethBiscamp]

I'm Kenneth Biscamp when Ted at engine system got done with our hammer heads they flowed 500 our Windsor is running 4.60 and we haven't even run it hard yet bring your LS crap on

[@UnityMotorSportsGarage]

They are BAD! Andy

[@johnwilburn]

Wow. Just looking at those ports, I was guessing 400cfm and yet, there's more to be had. Very impressive. How far we've come in 20 years.. That head doesn't seem like a bolt-on deal anyway. No reason not to finish them your way.... like the truck itself. You know you'll port them if for no other reason than never wanting to wonder "what if."

[@19jody72]

So my heads for my 302 flowed 283/208 after porting @500 lift.. youu think thats good? Trick flow 170's

[@UnityMotorSportsGarage]

Ummm yeah! I have always liked the TFS head.. everytime I've bolted a set on I've gotten good results!

[@baby-sharkgto4902]

Hi Andy! So do LT intake manifolds fit too?

[@UnityMotorSportsGarage]

Now that is a good question... I know that on the Engine that was featured in Hot Rod Magazine they cut up a manifold and made a custom deal.. I don't want to tell you the wrong thing, but I believe it will require a custom manifold but by now he may have it worked out so a factory type deal would work... Andy

[@johnparrish9215]

Sir, how was your port velocity on the flow bench, was it fast or a little lazy?? Also, use them as is and then modify them later on for more data and content. Tell DV we said hello.

[@UnityMotorSportsGarage]

The port velocity was down just slightly from where we would like to see it... It was in the mid 290's ft per sec.. but like David and I were talking it may be a bit misleading due to the fact of the added material on the intake face... Andy

[@UnityMotorSportsGarage]

And I will make sure to tell DV Hello!

[@FixItStupid]

@@UnityMotorSportsGarage That's Ok The turbo, Can Take Care Of That

[@bigbear5510]

Great video!👍👍 Those are some amazing out of the box numbers. I see where you are wanting to go with these heads and I would think that you're going to be better off with doing some massage work to them. How much? That's hard for me or anyone else to tell you but I believe that you will know what you to do for your application. I've read some of the comments below and I would have to disagree with some of them because they do not know what they are talking about. I don't know as much as others when it come to doing the work but I have learned a lot by keeping my mouth shut and listening to the that do know and have many years of experience. I'm looking forward to the rest of this build. I'm interested in what, if any modifications (porting) you do to the heads. I think that HP number you're shooting for is a little on the conservative side, I think that it make over 800 HP, especially with a well tuned dual quad set up like you're currently running. I hope that you get to dyno it at Charlie's shop!

[@UnityMotorSportsGarage]

The thing is I'm trying to sort every nook and cranny out on this thing using off the shelf parts... I know the heads are exotic to most... But I'm hoping to surpass David Vizard's golden rule of pump gas engines.. (making 1.4 lbft of torque per Ci..) If I can pull that off and push the power a bit higher in the rpm range I feel good about the 750 mark... But that is why we test! Thanks again for watching and coming on board Andy

[@allmopar1771]

Are those heads from Troy of Pacific Performance Products , Anaheim, Ca. ?

[@bobwhite5440]

they're from Greg Brown of Hammerhead Performance Engines in Snellville, Ga. he worked for Jon Kaase for a number of years prior.

[@allmopar1771]

Bob White Thanks for the reply.

[@ScottKenny1978]

So, are you going to do some forced induction on the Mixed Up BOSS? Or still naturally aspirated like Casper is now? I think I would go nuts on the porting if you're going to stay naturally aspirated, and only do a little cleanup if blown. If you don't mind doing (or can afford doing) two Dyno tests, I would love to see one as-cast or maybe what a home grinder can do for one test and a second test with major port work done on it. If you can only afford one Dyno test, whatever you *really* plan on putting in Casper (I'm assuming pretty heavily worked over).

[@UnityMotorSportsGarage]

The plan is for this Engine is to stay NA.... NOW.. I have Always wanted to build a Front Engine Dragster..and do a Nostalgia type build... I would love to build one of these engines with a period correct 6-71 supercharger with some Nitro... Now that to me would be fun! Andy

[@curtisanderson9984]

Just clean up the bowls and clean them up like the average guy can do in the garage. As far as the LS heads go, is there really much of a benefit to adding these heads considering how well as some of the cheaper aftermarket heads flow with the stock valve arrangement? Richard Holdener shows some serious flow numbers and horsepower with stock stuff if you haven't seen. ALso, I am from Concord and am currently doing a complete rebuild on a 6.0 Powerstroke. Maybe we can grab lunch one day?

[@UnityMotorSportsGarage]

Curtis thanks for the kind words.. I understand your line of thinking with the LS engine thing.... Given the options of heads available to the LS crowd, I doubt many would want a "FORD" style head setup... None the less Greg has sold quite a few sets to LS guys who want to march to the beat of a different drum... I can fully respect that because in a sense...that is why I went this route... In the worlds of SBF's you are either a Windsor Lover or a Cleveland Lover... Well I want the best of all worlds.... because this head has roots to both and its big Brother the BOSS 429.. Hence the name MIXED UP BOSS Andy

[@robertphillips3078]

These r performance heads. Not 4 ur bolt up 2 c how they go on an average 351w or 351c. These heads require the best bottom end available. Minimum of a Forged Nitrided Steel Crank & decent Rods & Pistons. No one in there right mind is going 2 Build a base line engine. These heads complete with valves, retainers, rockers & valve covers r not cheap.... $$$. Edelbrock make some lovely heads for 350-600 hp 4 Windsors. These Hemi Heads r from a different planet & require a Decent Budget Engine Build. Quite frankly l cant stop going on Google 2 take a Peep at them a few ⏱ a day. Gr8 look'in heads & engine packages. Well done Hammerhead Performance Engines

[@UnityMotorSportsGarage]

Greg Brown of Hammerhead Performance Engines has built mild engines using these heads.. with 10 to 1 compression and a SMALL Hyd Roller cam with a Vic jr intake and 750cfm carb they make around 640hp without breaking a sweat... But you are right they aren't for everyone.. but to have the look of a BOSS 429 in a Small Block package is pretty cool! Thanks for watching and Subscribe so you can follow along on the build.. Andy

[@charlesstarke9678]

Go all out...

[@UnityMotorSportsGarage]

We are doing a out of the box build right now.. with the goal of 750hp NA on pump gas then we will turn the wick up... Thanks for Watching please Subscribe and follow along Andy

[@TripAMD]

This is oh so sweet! Liked and subbed👍

[@UnityMotorSportsGarage]

Thanks for the kind words! Andy

[@TripAMD]

@@UnityMotorSportsGarage. 👊

[@jamest.5001]

Port them! Hot rod rule #1 ya can't leave well enough alone! If the heads are in the bench, you got the tool in hand, you mays well port them!! I wouldn't get too crazy, maybe attempt low lift flow and velocity, and maybe seat and chamber work, heck do it to it! Squeeze all the power out them heads!!

[@UnityMotorSportsGarage]

The first build of MIXED UP BOSS is seeing what we can get with out of the box parts... The plan is once I get it running and the new has worn off a bit we plan on doing a Max effort type build and expecting four digit power levels! Andy

[@bradygies9994]

Bolt them on and run it brother. Out of the box.

[@UnityMotorSportsGarage]

That is what Im doing with MIXED UP BOSS... The goal is to make 750hp NA on pumpgas with the as cast port... Part 2 will be a different story.. Stay Tuned, Andy

[@jamest.5001]

Imagine those ports under about 2bar of boost! They should be do about 2x naturally

[@UnityMotorSportsGarage]

given my NA target power level of 750hp it should make 1500hp with 14.7 psi! Which is pretty healthy for the given amount of boost. Thanks for watching Andy

[@oldmanintheshopbuiltnotbou8726]

pretty good numbers

[@josephnubile1970]

Hi Andy, love the video. I would like to see Casper pull the wheels 2 feet in the air and go like a Banshee. The question is, How driveable can YOU and David make 800+ horsepower. And on another note, what is the purpose of the clay around the intake port. When the motor is in the truck it will only have the intake manifold, could you please explain this to me, thanks. Cant wait to see you assemble the motor. See you in the next one.

[@UnityMotorSportsGarage]

Thanks for the kind words... When you flow test heads you can't have the sharp edge of the port entrance because it will disrupt flow... Most nowadays use a 3d printed "manifold" that has a Radius entry to smooth the air transition into the port... We use them as well but didn't have one to fit this new head so we went old school... Good old modeling clay works just as well it just takes extra time... But it is all about smoothing the air flow into the port itself... Andy

[@UnityMotorSportsGarage]

800hp and being drivable is going to be a tough challenge.. one advantage of these heads... I don't think it is going to require a really big cam to meet the goals... We shall see... Andy

[@alanmyers5081]

Off topic sorta, I’ve got a set of fully assembled, as cast C302B heads. Are they worth anything these days? Titanium valves, etc.

[@UnityMotorSportsGarage]

Yes the are... Look up Tim Halstead aka Dragboss and he can help you!! Big time Cleveland guy.... I trust his opinion

[@aussiesupersnake6642]

Hi Mate just found your channel,i am a dinky dye ford man,interested to see how you go with these hammerheads,trouble is they nearly double the price in aus by time we get them

[@UnityMotorSportsGarage]

Thanks for checking out the channel! You mates have some awesome Ford hardware down there... Same problem for us! Please Subscribe and help spread the word!

[@davidhartenstine190]

Both ways!!

[@needmetal3221]

If you plan on boosting I would leave the ports as cast and spend the time and money on the turbo

[@duradim1]

So what does one head dressed up with good hardware costs?

[@kyleoden7656]

How does someone go about getting dv to port a set of heads for them

[@UnityMotorSportsGarage]

You can contact him on DavidVizard Performanceseminars.com

[@robertwoodward388]

Where is this Hammer head performance located

[@UnityMotorSportsGarage]

Snellsville GA

[@philipmazzuca2269]

Will this be a N/A build? What cubic inch?

[@UnityMotorSportsGarage]

Project MIXED UP BOSS will be 429" just like the original Engine..

[@robertphillips3078]

Q 4U... have u dynoed ur engine as yet.. waiting 2 👀👀 how much hp u made ? Robert Phillips Australia

[@UnityMotorSportsGarage]

Robert, I have not... I've been working tons of overtime... Hopefully it will be soon! It's ready to go... Thanks for Watching Andy

[@robertphillips3078]

@@UnityMotorSportsGarage Cheers Andy , my guess is 700-725hp. I dont know ur compression or camsharft specs. More if u added Wilson's fuel rails & throttle bodies 4 efi . Take the O/⏰ when u can get it. Would ❤ 2 know if any bright spark has put a Whipple 4 or 4.5ltr supercharger on top of those heads 2 👀👀 how they go. . Stay safe Andy . Robert

[@olderthanyoucali8512]

The original Boss 429 heads flowed extremely well, but weren't successful when used in Drag racing . It was because they worked great at wide open throttle, but were to big and failed when they tried to use them for the drags. It maybe that these super big port, high flow heads will have the same problem if used on a drag race engine? And may not work at all on a street one!

[@mattjonesturbo1]

Them heads flow great numbers as cast for sure but are limited to a light car like a fox body or turbo setup. I would think the reason Kaase stayed with big blocks is the power potential. The sr-71 heads can make 1100 hp for a lot less money and would benefit a heavy vehicle, just my personal opinion.

[@UnityMotorSportsGarage]

With the port velocity that these heads have it would make some serious torque. We are looking to make well over 1.4 ftlbs per cube NA on pump gas... That is Engine Masters territory. The purpose of these are for the guy who wants a BOSS 429 and get it in a small block package.. 750hp NA on pump gas from 429" of Small Block Windsor

[@Robert-mn8gc]

Greg Brown with his own heads on his own engine. 928 hp , 674 tq & 7600 or 7800 rpm . With a different manifold another 30/40 on a 427 cu inch motor . So knock it up 2 a 441 cu inches & Ur knocking on 1000hp . How big was Kasse Engine ??? And don't get me wrong l am a big fan of his . These heads on a 441 , with a marine Intercooler & 3.8 ltr supercharger from Whipple is going 2 be absolutely outstanding 👏 . 1250 /1350 range

[@markbulva4188]

Hey Andy where have you been???

[@billygullifa3245]

Both.

[@UnityMotorSportsGarage]

I'm pretty sure that might just happen... Thanks for Watching! Please Like and Subscribe... Andy

[@RSDX99]

As a Ford guy I like any SB heads that can generate more HP than a sb Chevy, my only problem is that most racing organizations will only allow inline valves because 99% of the racers are running in line valve heads. Woo has outlawed Cleveland heads on the Fords since the day the Casey Luna Ford won the championship years back. Show up at a sb modified show and you will get banned.

[@UnityMotorSportsGarage]

That is the truth! Ford has been penalized so much through the years... Thanks for Watching and please subscribe to follow along on this build... Content coming soon! Andy

[@mylist6938]

I'd like to suggest ceramic combustion surfaces fot long life

[@loganpe427]

(edit) >oh yes, the heads are pure brain candy! / I guess it's just luck that puts a guy in a position to live in the right place to meet and make friends with David Vizard, a guy I can only read about in performance mags, how cool is that?! I've know his name and rep for what 40 years?

[@UnityMotorSportsGarage]

Thanks! I consider it fate that put us in each other's path... I had opened a Performance Shop called CrossRoads Performance here in NC and I was visiting a friend Tony Brown who owned Atlantic Racing speed shop in Charlotte NC. I walk in and sit down and who was beside me... none other than David Vizard... At the time I was heavily involved in FORDS Mod Motor engines and he wanted to do some testing on them for his Cylinder head book and the rest is history... as they say.. Andy

[@robertelmo7736]

So they have 10 head bolts and you just use 8 of them on a Windsor?

[@UnityMotorSportsGarage]

No, Greg Brown took the basic BOSS 429 idea and downsized it to create these heads that fit either a Windsor or Cleveland block..

[@2011metalmaniac]

what is the clay for?

[@bobwhite5440]

it smooths out the airflow entering the port.

[@UnityMotorSportsGarage]

When flow testing you have to eliminate the sharp edge of the port entry because it will disrupt the flow. Most nowadays use a 3d printed plastic manifold that will bolt on to the head face that has a radius entry... We use these as well.. but didn't have one to fit this head. So we do it old school.. good old modeling clay... It works just as well just a bit more time consuming.. Andy

[@duramax78]

I’d pay David to work at his shop.

[@bobkonradi1027]

I would like to see the heads tested "as cast" because I believe in the heads being max'd out by the builder in the "fast as cast" mode. I do not believe that a buyer of these heads should take delivery and then spend thousands more for porting. What I'd really like to see is to take a set of heads, flow and port them to the max, then recast the heads using the molds from the ported heads as the example and then make them conform to that mold. I've seen the price schedule for these heads, and they "start" at around $6300. Then add in another couple thousands for porting, that's BS. The "as cast" heads at the $6300+ level should already be max'd out as to flow. No porting should be required at all.

[@UnityMotorSportsGarage]

I can tell you that in Stock form they can support 800+ hp NA I do know that people have exceeded 1100 NA so it really depends on what a person's goals are.. I'm doing them on MIXED UP BOSS as cast with a power goal of around 750hp in mild street form... Thanks for Watching! Andy

[@MrTrevtrev198]

If it weren't for the fact the coyote 5.0 is so wide it would make the push rod Ford engine obsolete. For 10k in these heads plus another 8k or so in the block and rotating assembly I could have a 1500hp coyote

[@Robert-mn8gc]

Will Gregs Hammerhead Head fit a LT Engine Block . ?????

[@UnityMotorSportsGarage]

I would think so.. but since I haven't done it, I can't give a definitive answer Andy

[@Robert-mn8gc]

Thx 4 the like Andy , but u didn't answer my Q 4U ..

[@UnityMotorSportsGarage]

@@Robert-mn8gc yes I did

[@Robert-mn8gc]

@UnityMotorSportsGarage My apologies Andy .. just found Ur Response. Thx Robert Australia 🇦🇺

[@robertphillips3078]

Would ❤ 2 c these Hammerhead Boss Heads on a bigger stroker motor (460+ 9.5 deck height) with whipple marine intercooler with either 4.0-4.5lrt Whipple Supercharger. Would have 2 be 900- 1000+ hp & the tq would be monsterous.

[@UnityMotorSportsGarage]

With the power these heads make NA I think it would be safe to say you could make 1400 plus with only 14-15 psi of boost! So yes it would be a Monster! Thanks for Watching and please Subscribe to follow along on the build! Andy

[@ws1807]

I'm not sure why a person would want to put those heads on an ls because there are aftermarket ls heads that rival those flow numbers. Those look similar to BBC heads, it appears that the original boss heads merged the BBC and hemi head design.

[@petejoseph8257]

Those heads would be a major waste of money for an LS. They’re awesome for SBF, but there are so, so many great heads for LS that flow over 400 cfm and won’t require the overprice rocker assemblies

[@TheOfficial_InsaneStang]

Hey brother, what kind of fuel mileage does the ol ghost get? I’m actually nervous to see what my “Mean Green” is gonna get 😂 anyway, them heads are insane! But they will sell, there’s some serious guys out there with serious money!

[@UnityMotorSportsGarage]

CASPER gets right at 16mpg around town... When you get him on the highway that's when it drops.. Thanks for the kind words... I believe that they will do very well.. as it's not a one trick pony! Andy

[@TheOfficial_InsaneStang]

Unity MotorSports Garage ....fuel mileage just went down a lot... lol Did you figure out yet what you’re going to do to fix the old girl? Or does she need a new block now? That last video probably hurt me as much as it did you and it’s YOUR DAMN TRUCK! 😂 if I lived closer to you I’d come help you if I could.

[@UnityMotorSportsGarage]

@@TheOfficial_InsaneStang thanks brother! I already have a motor that I'm going to drop in it... MIXED UP BOSS. You can see the videos of this build... I just need to step it up and get it done! LOL. It is definitely not the way I wanted the 393 to go out .. but hey.. it is what it is.... Andy

[@TheOfficial_InsaneStang]

Unity MotorSports Garage Man, you did it exactly the way any car nut would have! That was a damn good video regardless of how it ended!

[@TheOfficial_InsaneStang]

Unity MotorSports Garage Your name really is Andy?? Lmao My name is Randy! Lol no joke!! Wow, that’s awesome lol

[@GarrettPolson]

I know heads that flow way more as cast

[@ricardosintyago343]

Don't modify them just do the basic build for now then later on an upgrade build

[@UnityMotorSportsGarage]

That is the plan Ricardo.. MIXED UP BOSS is being done with off the shelf parts on 93 pump gas and we are shooting for 750 NA.... Once it is made some miles and trips down the track we will move on to phase two! Thanks for Watching and please Subscribe to follow along Andy

[@waynebollentin989]

If I'm spending 7k I'll spend about the extra 1k and get a set of SC1'S that are a much better head hands down in every aspect.

[@PatriotPlus179]

These heads flow pretty good. Probably better than most 8.2 deck max effort motors can make.

[@timbaker4327]

Nope , dont think so. the sc1's are great heads , but they dont flow what these do . They already are over 500 cfm. Just wait until some of these porting specialist get started on them . And dont forget that these heads started out as street heads . I guess we are going to find out !

[@waynebollentin989]

@@timbaker4327 there's a reason we have more than 1 manufacturer of heads and other aftermarket parts. We all have different preferences. 800hp isn't a big deal today. I had a 428ci sbf nitrous engine with Bf202 that made 850+ almost 20 years ago N/A before the kit got turned on. I'm sorry I can't see spending this kind of money on a head that's not proven yet. How reliable it's going to be etc. I wish them luck and maybe they'll get there but they're not better than a SC1 from BES currently.

[@timbaker4327]

@@waynebollentin989 there has already been a 406 with these heads that did 1139 hp ,I'd say that isnt too shabby. Also one of Gregs engines won the race engine challenge , so yes I would say there is going to be plenty more to come !

[@waynebollentin989]

@@timbaker4327 1139hp with a N/A 408 ?

[@MrValhem265]

Casper the Nasty Truck wants them mate ?

[@UnityMotorSportsGarage]

Yes He Does!!! Thanks for Watching! Andy

[@MrValhem265]

@@UnityMotorSportsGarage ill send you a vid on this xw falcon downunder 351 w this thing is wicked

[@MrValhem265]

u got an email adress???

[@UnityMotorSportsGarage]

@@MrValhem265 [e-mail]

[@MrValhem265]

@@UnityMotorSportsGarage I JUST SENT OPEN THE FILE AND COPY AND paste youtube urls into you browser let me know how you went bud the car is quick it has 58.272 in the gmail mark it as safe c yall

[@stevewelborn8744]

Port the heads.

[@jamest.5001]

About anything is possible with a welder and CNC, plus a few brain cells, after I saw the Ford 300 i6 , with 351 Cleveland heads grafted on it, and actually beat fast v8 cars I'm. Wanting to possibly do something with a 250 Chevy, and either LS heads, maybe 5.7 hemi heads, maybe e VC en Subaru heads welded together, basically me asking a vortec 4200, it would be alot cheaper to just to buy a $250 vortec 4200,

[@UnityMotorSportsGarage]

I agree! It would be so cool take a inline 6 chevy and put a good head on it and make some killer power... Andy

[@amazin1827]

Are you saying LS Ripped Off Windsor?... I AM!

[@UnityMotorSportsGarage]

even down to the firing order

[@amazin1827]

@@UnityMotorSportsGarage You Tube comments is the best part of graduating UNIVERSAL TECHNICAL INSTITUTE 😉 That place is riddled with FORD emblems. (NOT chevy) I went for my 56 F100 and took a Welding job after. My favorite motor is the M400. With the Aussie 2v's (in my fordemup)

[@dennisrobinson8008]

hemi style head is as good as you can get before going DOHC

[@MrBlackbutang]

How to make hp Ls install Ford parts on it .

[@loganmpe7559]

First time hearing about that, my smile was epic!

[@finnroen2334]

I think at this level of cost and complexity, as cast is not very interesting. This is not for engine building 101 and I en sure the heads will be ported sooner rather than later. I am looking forward to be impressed. :)

[@UnityMotorSportsGarage]

Finn your level of being impressed must be very high.... To me the fact this head can support 800hp NA out of the box is more than impressive... Making HP these days is taken for granted.. because this kind of power years ago could have been only achieved by a Max Effort Race program..

[@timbaker4327]

@@UnityMotorSportsGarage Hey Finn,are you saying that 500 cfm in a small block Ford does not impress you?Ported or not those are huge numbers and you know it.

[@timbaker4327]

P.S. you guys at UMG seem like a great bunch of guys.

[@finnroen2334]

@@timbaker4327 No, that is not what I am saying. 500 cfm in a small block Ford is very impressive, but I am sure Andy and DV can improve even this. This is what I would like to see.

[@timbaker4327]

@@finnroen2334 Ok, now I see what it is you were saying .I agree ,I am sure there is even more in them also !

[@terryg1129]

Unity,

[@mikeeagle2653]

Build a Chevy and make more horse for half the price. You can make 650 hp with and ls3 with stock heads

[@andrefecteau]

20 years too late...it's an electric future folks...got a 427 sbf, but reality is reality

[@UnityMotorSportsGarage]

I can see where the future is heading... But I cant let go of that V8 sound! Thanks for Watching Andy

[@andrefecteau]

@@UnityMotorSportsGarage well when 0-60 is 2 seconds and you can sit in the back seat? Your kids will laugh when you tell them you used to drive the car.

[@andrefecteau]

@@UnityMotorSportsGarage yeah and a hot girl is fun, for about a week

[@bigbear5510]

@@andrefecteau LOL, but I thought it was just until they started talkin'.😉🤣🤣🤣

[@andrefecteau]

@@bigbear5510 yeah when you sober up and realize what's going on it's about a week

[@MrValhem265]

i just sent you an email bud it will have 272cussy as part of my email address

[@racerd9669]

Right from the beginning you make a big mistake, you need to read the SF manual about a entry radius, your numbers will be LOW with what you are doing with clay.

[@UnityMotorSportsGarage]

Hey I was taught by the man David Vizard! His methods seem to work pretty well.. We use 3d printed Manifolds for most of our testing but the port was larger than the one we had at the time of the test.. Thanks for Watching, Please subscribe as we continue the series on the buildup! Andy

[@racerd9669]

@@UnityMotorSportsGarage Hey I bought my first SF100 in 1970 and my SF600 was serial #11 and I would always make my inlet flow radius out of wood. But you need to have a portion of straight before you enter the port. It does make for more accurate data. I did some of the cylinder head design for John K at CID and intake manifolds also. In fact John would CNC machine a inlet radius for me and then I would have to add a section of wood to it to get a straight portion at the flange, otherwise it would whistle like crazy.

[@UnityMotorSportsGarage]

@@racerd9669 yes sir on the wood.. I have put a router to good use making manifolds! You are right about having it straight portion before the inlet.. It does make a difference! I feel pretty good about this head it has good port velocity and port energy given its runner size the goal is to make at least 1.4 lbft per cube on torque production from pump gas.. I can't wait to get it finished and on the Dyno! You don't still have that SF100 laying around do you?? I would love to have one just for the shop! Andy

[@racerd9669]

@@UnityMotorSportsGarage Have you ever looked into how the wet flow is on that head. I think wet flow is much more important than dry flow. When you do your dyno work you will find out just how good the wet flow is. One of the Cleveland heads I designed for John ran on the dyno with 17deg total timing to make best power. That is the true measure of how efficient a head is. Oh no, I do not have any flow bench , only my home built wet flow bench.

[@robert23497]

Jon Kasse P38 heads are better for small block Ford. Easily better than these heads.

[@UnityMotorSportsGarage]

the P38's are a great set of heads, BUT you cant get them anymore! They really aren't in this league of heads though.. Ive tested them with David Vizard and they do make great power but these heads when ported will flow 500cfm! Thanks for watching, Please Subscribe and follow this build as we are making good progress on it now!

[@timbaker4327]

not even close to being right.

[@cavscout62]

The fact that y’all are making this head to fit the junk copy of our sbf (ls) tells me you have no loyalty to the Blue Oval and have shit on the BOSS legacy. Damn.

[@UnityMotorSportsGarage]

Well... Thats not true... I'm a true Ford guy and Greg had someone approach him about fitting it to the LS and given the fact that the bore spacing is so close between the SBF 4.38 vs LS 4.4 He took it as a challenge to make a Chevy run fast with Ford Stuff... Just the opposite of what you are saying... Everyone touts the LS as the greatest! He wanted to show what was left on the table.. Andy

[@mikeeagle2653]

That’s it. 😳. Those are not impressive flow numbers.

[@approachingtarget.4503]

Lol....why bother. A $500 junk yard motor with a turbo will blow it away for less then $2000. Try again!!!

[@UnityMotorSportsGarage]

What's happens when I put twins on this?.... 1400hp with only 14.7 lbs of boost....There is always bigger plans for later.. Thanks for Watching! Andy

[@curvs4me]

Andy, I'd love to see mixed up boss run the Hammerheads stock at I'm guessing around 870-9 hun-ned hp. Then ported pushing well into 4 digit NA for NASTY with those numbers. I was searching around for heads, eyeing the Trick Flow Cleveland heads and giving them the business. But now I'm changing gears. I'll grab me a nice 351 production block and massage it a little. Put mo money in the heads.

[@curvs4me]

I'll tell you what Andy, go all out pump gas. With the right 4 link set up or even leaf spring you can dead hook on the street. People are pulling the front end and rolling out on regular pavement with 1500-1700 hp on small tires. So even if you hit 4 digits, it will be just fine 😁

[@UnityMotorSportsGarage]

We are shooting for around 750na the first go around.. with Nitrous down the road... Once I get the truck sorted out with that combo... It will be time for stg2 porting the heads, add compression with a Nasty solid roller so we can shoot for that 4 digit mark... Andy

[@curvs4me]

@@UnityMotorSportsGarage What a set of heads! How lucky am I to be considering my first Ford. In retrospect I don't understand how GM got all the popularity. If I knew what I know now back then, I would be killing it with Fords especially the 429/460. Only Kaase knew lol