Ford Modular engine, stroker kit, Compression ratio

[@BryceKimball7.3]

I found your channel on friday night. And after watching all of your videos about the 4.6l I can confirm that I have learned more from these videos than I have learned this school year.

[@ITheUnknownManI]

Bryce Kimball that's so me hah

[@dannyjohnsonsgarage]

Bryce Kimball thanks ;)

[@shawnwashington8302]

Can u talk more about the mach 1 4.6

[@lucasclift3196]

Danny and Justin are very knowledgeable about everything New Edge. I'm ready to see a Cobra R on here. Thinking about Jarnigan Ford with like 16 different Terminators wrapped around the front in every color coupe and convertible, a 95, and a 2000 Cobra R, and a Mystichrome Coupe and drop in the showroom. Wished I'd taken photos so bad!!

[@blacksheep8432]

I almost never post a comment, (because my questions are half answered, and I don't have time to play tag) but you answered so many questions I've been watching countless hours of videos to find. Please keep providing this kind of content, you're awesome, this was SOO helpful. Again, extremely thankful you made this video!

[@JB-zn1kx]

Built a 5.4 with a 3.4 Whipple. 754 HP at the tires with LOTS of room to grow.

[@bertramlrezenet9311]

I believe the Ford mod engines derived from the engine developed for Indy racing during the mid 60's. If I can recall, it was about 250 cid, dual ohc, fuel injected. The block was based on the 260 cid engine. I was blessed with the opportunity to see one of those impressive engines at the Ford museum in the early 70's.

[@willhayes52]

man I wish I had you here when I go to build the bottom end of my 99 Cobra. love your videos 👍

[@dannyjohnsonsgarage]

Thanks. I appreciate it

[@plymouth40]

Nice HEMI badge on the Ford bench 👌.😉. Can't deny best heads ever produced 👍. Thanks for sharing 👍

[@dannyjohnsonsgarage]

plymouth40 Yes, I’m a true enthusiast. I don’t hate on any, but respect all 🙌🏼. I own Infiniti, Ford, Chevy, and GMC currently

[@plymouth40]

@@dannyjohnsonsgarage Sweet m8.👍 Seems your missing one .. A Mopar would complete your collection 😉. Enjoyed your vids bud 👌, all the best to ya.👍If interested I have some footage of my Boss Falcon in OZ it's a beast ✊ 420hp at the flywheel. ✌

[@sailingzigzags6511]

Thanks so much for that, easily explained a lot for me

[@Wear-N-Tear]

What do you think about the boss 5.0 block with a stroker kit 5.3 L ( 4v application) . Not sure to either stick with a standard stroke or stroker kit.

[@plymouth40]

In Australia 5.4ltr 32 valve quad cam 3.5 bore , 4.1 stroke , 330 cubes 😉😉, We call em The Boss.👌. Ford Falcon BA Boss 👍

[@larryhamilton9072]

Just added screenshot this American will be looking into this build from Australia. Thanks

[@feellnfroggy]

Ford used the 4.6 2 valve in 92 in the crown vic

[@Oliver0200]

Great video!! Enjoyed and learned much!!

[@dannyjohnsonsgarage]

Oliver thanks for watching.

[@eltigreandthewalrus]

Those are some nice H beam rods. I would love to install those rods, mill my block/heads, port the valves, and throw on a mild cam, and maybe some ceramic headers. Then I would be a happy camper.

[@dannyjohnsonsgarage]

The terminator was an overbuilt car by happenstance kzbin.info/www/bejne/Y2OWpYdmqq-hosk

[@ThanosWasRight300]

Great great video thank you so much

[@johnwilliams6407]

Nice work I need your help. What's the best compression ratio for fuel economy and power on a 5.4L every day drive? Stock rods.

[@edjackson4389]

THe first 4.6 Ford mod motor I ever laid eyes on was in a brand new 1991 Lincoln Town Car.

[@joshmcmillan402]

So curious would you or wouldn’t you stroke a 4.6 ?

[@dannyjohnsonsgarage]

You would for more power, you wouldn’t because you’re putting the wrist pin closer to the heat with a smaller thickness of piston. You’re machining the components to be thinner, which would be more prone to cracking, but that’s not too much of a concern since the cylinder walls are thick. It’s a bigger concern on ls engines that get so thin you crack cylinder walls

[@Guzman2012]

Great explanation on the 4.6, I have a 03 GT I wanna buy the on3 single turbo kit what setup would you go with? I'm still learning so any advice would be great thanks

[@dannyjohnsonsgarage]

Alex Guzman my advice for a turbo is that they are best for automatic transmission cars and must be put on the right fuel system to get the max out of them. Same with centrifugal blowers. I would recommend a positive displacement (top mount) supercharger, and remember that your car will hold about 450 hp at the wheels before it snaps connecting rods. Check out my brothers to valve BUlLLITT. It has a built bottom end, heads, cams, and the eaton supercharger from the cobra kzbin.info/www/bejne/o6m8mpqAoruFiKs

[@lilmayofanb1105]

Had a question for you I have a 1998 Cobra SVT aluminum block which got hot and had water in it we change the head gaskets put everything back together and still it continue to overheat can you help me out with that

[@dannyjohnsonsgarage]

lil mayo fan B Have you burped the engine using the front cross over plug?

[@robertsarri713]

My question is what kinda of gains would your see out of a stroker kit in a 4.6 to 5.0 ive built 383 strokers but obviously different ball game just really interested in this setup with my bullitt but is it worth it?

[@Gcrxx22]

I have a 99 cobra and considering putting forged internals. What bore size, stroke, and compression would you recommend?

[@dannyjohnsonsgarage]

It depends on what power adder and fuel, but I’d say the 9.5 compression ratio range, stock bore and stroke so you can keep your stock, forged crank and only need to buy pistons and rods. Then plan to run a good octane/E85

[@Eeropolvasti]

Good job! Thanks, I want to hear your thoughts about my Infiniti FX45 engine: I noticed, that there is plenty of "meat" in cylinder walls, so I am boring it into 5 litres, and ordered bigger, basically same pistons, QX56 has. now, stock comression ratio in FX 45 is 10.5, I changed that lower, like 10.2 with my new "Power pistons', since I am putting "sharper " cams in there, they are still under order, since this company in California, they could not have aluminum blocks to make them yet. Lower compression ratio, I think, able me to use lower octaine gas, correct?? That is my theory anyway behind it, I will get more power out of my great DOHC engine with other mods, like my own "plenum",about 1/4 inch, cold intake 3 to 3.5 inch, and headers, new exhaust system. What do you think?? Thanks, and, would you recommend bigger, faster fuel injectors, stock are 330 cc, they are able to handle about 450-500 HP, with 51 psi, which is a stock fuel pressure! Your thoughts...., thanks =)

[@therealj.will34]

whats the easiest and most affordable way to beef up a 4.6l 2v. i recently took my motor apart and came across this video

[@dannyjohnsonsgarage]

N. Williams it all depends on budget I suppose. My brother has a Bullitt we put an mmr600 block in and topped it with the tork tech supercharger kit which uses the cobra's supercharger. It makes a cool 440HP now and runs great. I'd start with forged internals and decide if you will stay naturally aspirated or to turbo/supercharged. Turbos are best used when you have an automatic Trans.

[@dannyjohnsonsgarage]

N. Williams kzbin.info/www/bejne/o6m8mpqAoruFiKs

[@hembertgomez3079]

Hi Danny I recently watch your videos, I have a question, 1: What exctly change in a Stroke Kit to uo at 5.0, the distancie in a Rods or diferentent distance and a Crakshaft? 2: I see a pistons Eagle to 3v and I have a 2v, I can use this forge pistons, because the 3 v just add anoter valve in a center and the 2 v position has a simililas to the 2v heads. Thanks I recent Rebuild my Engine my Crankshat is a 8 hole F85E-8303-BB I think is a Cobra Crankshatf because the old owner chage some parts to procharge the engine.

[@dannyjohnsonsgarage]

Typically, you will need a new crankshaft for a deeper pull into the block, and also longer rods. However, some companies may be able to change the length of pistons as well to increase displacement.. but that also will change the wrist pin's location, which you don't want to get too close to the top of the piston. Each company may have a different strategy, so I'd recommend calling the company and asking how the kit will increase displacement. A lot of these companies like DSS, MMR, Eagle, Diamond etc. have great customer support.

[@hembertgomez3079]

Thanks Danny i do it.

[@Oliver0200]

the terminator rods are already forged correct?

[@BryceKimball7.3]

Oliver yes. They are forged manley rods.

[@Wretched2JZ]

Whatcha using the Torco for back there? 😎

[@dannyjohnsonsgarage]

I ran it once and that’s all it took to turn my 02 sensors orange lol

[@Wretched2JZ]

@@dannyjohnsonsgarage yea they do that. I heard it isn’t bad, that it just burns off. I wonder what causes that lol

[@MorbidThrasher666]

Im getting my lower end rebuilt at the end of the year on my cobra,my block has its passages gunked so im not getting my oil up to the heads and the motor is shaking. Going with manley forged rods and pistons. Came back to watch some of these vids. Whats the story on this buddy of yours cobra? Is he going stroker?

[@dannyjohnsonsgarage]

Morbid SVT COBRA I don't think he'll go stroker. He had a few things come up and has his new 2.9 Whipple he has for it for sale. It all depends on when he can have the funds to finish it

[@dannyjohnsonsgarage]

Morbid SVT COBRA I don't think he'll go stroker. He had a few things come up and has his new 2.9 Whipple he has for it for sale. It all depends on when he can have the funds to finish it

[@MorbidThrasher666]

Gotcha. I ran into ,y mustang shop mechanic today at work,he said hes sending my block upstate to one of the best rebuilders in the country,that sounds like great news,now im no where near close on the funds right now,gotta grind till december thgough :(. Now im anxious as hell,lol

[@dannyjohnsonsgarage]

It adds up real quick, and I'm having some anxiety over my buddy's build because I'm reading about how the mod blocks need a lot of attention and should be cut in small increments (not just punched .20 over on the first run). I'm sure machine shops know all that, but Its got me nervous.

[@MorbidThrasher666]

I can relate. Btw found out the shop. Its at boyton beach called MPR racing . Tim Eichorn ,check them out on facebook. They build alot of coyotes too.

[@keepondreaming3870]

I have a 96 cobra motor, Teskid block, Kellogg crank, looks like It has flat top piston. Stock I beam rods and Cobra 99-01 heads have work Comp cams springs, cams, rr Bunged heads. 🕵️ Will I benefits from a Manley h beam or Forged pistion, from a 03-04 Cobra? Will it handle more boost & be compatible with my 96 cobra rods & piston size.🤷 Loved the video👌💯

[@dannyjohnsonsgarage]

The manley connecting rods from a 03/04 cobra are among the best you’ll find! Yes, install them. But with flat top pistons, that will be high compression so you’ll make power with boost very easy, but be safe with the ignition timing with that much compression ratio. Good luck on he build!

[@BULLDOGHOTSHOT1]

Hmh, does the piston have an issue of being pulled too far out of the cylinder like a 4.25 inch stroker ls engine? Where to skirt of the piston is pulled out of the cylinder and rocks is what I'm trying to say xD

[@dannyjohnsonsgarage]

That would be the concern if not using a full stroker kit

[@BULLDOGHOTSHOT1]

Danny Johnson oh ok :) cool, I was pretty worried at first because of the deck height compared to an ls6. Thanks!

[@schoumv6]

V8 pistons for highest compression 6.8 v10 triton engine? Thank you

[@jlrockafella]

Try fitting that into a mustang... It's not going to happen.

[@badmpg]

Great video series, thank you for uploading these vids. Just curious, what compression are you guys choosing on this rebuild? I have an 04 cobra, thinking of going 10:1, it is already on e85

[@dannyjohnsonsgarage]

Jon J unfortunately, the owner is at a stand still financially, so it might be awhile. He was planning on 9:1

[@westside98]

Awesome info thanks

[@dannyjohnsonsgarage]

Thanks for watching

[@christo7981]

Thanks for making this video. Very informative. Quick question. What compression ratio would you recommend for a 99 cobra engine? Slightly higher than stock? I’m rebuilding it with forged internals. And plan on adding a pro charger. Thanks

[@dannyjohnsonsgarage]

Christo 17 I would shoot for around 9:1. Use a high octane fuel with that setup. Coyotes are running 11:1 and now 12:1 with direct injection (which helps), but you have to be very good with the tune and proper fuel

[@christo7981]

Danny Johnson Thank you. I was looking at either Lund or Vmp for a tune. The best octane we have is 91. Unless I run e85. The shop recommended boring .20 over or if I wanted, they can add a stroker kit. But like you said, there’s not a lot of room. Do you know if other 4v heads will benefit my build than the stock 99 cobras? Thanks again.

[@dannyjohnsonsgarage]

Christo 17 yes, the 03/04 cobra and mach 1 heads (04 being better and the 05 revision for the Lincoln aviator DC being the best) are the best it got..other than ford GT heads, which are near impossible to find and expensive if you can. I believe the 03/04 heads also match up better for the supercharger components if you go towards terminator supercharger parts

[@lostsoul7773]

Great video Danny. I have a 2004 Cobra. I have 65,000 miles on stock motor with ported and pullied Eaton. About 470 HP. I am looking to install a 2.9 Gen 3 Whipple with return fuel system running E-85. I want to get as much reliable HP out of it. So I am thinking of upgraded rods and pistons and ARP hardware. What compression would you recommend? I am shooting for 800 hp or more. Will the stock block hold up? Custom cams and ported heads? What parts would you recommend to do all this right? Thanks

[@dannyjohnsonsgarage]

Wilson Velasquez You can get to the 800hp level with little mods and without a rebuild, but if you want to rebuild the engine you can. I would simply upgrade the fuel system as you say with the gen 3 2.9 and let it ride until it needs a rebuild. I personally don’t like cams because the car is fully capable of running smooth and making big power, but if you like the lope and cam sound, no problem with that.

[@lostsoul7773]

Danny Johnson If I do rebuild. What compression would be good for a tune for 91 octane gas with 16 pounds of boost and a tune for E85 with max boost(22-25)? How is the new coyote getting away with almost 12:1 compression on pump gas. And be able to run a 3.0 Whipple making over 770 hp on pump gas? Thanks for the info!

[@dannyjohnsonsgarage]

Wilson Velasquez Yeah, 9:1 will still work for both 91 octane and e85- you just need the tunes conservative. The new coyote can run a higher compression ratio because with direct injection, fuel is sprayed later in the compression cycle (rather than mixed in at the lower intake manifold) and therefore runs a lower risk of pre-igniting in the cylinder. I asked whipple about the high compression ratio and they responded it has knock sensors to pull timing (which to me, if it knocks, it’s too late- in fact, the terminator does not have knock sensors for that reason. It reduces ignition timing off of air intake temps). I foresee some issues in the future. We will see

[@MrPelletgunguy]

Wanted to get your opinion on the compression for a 297 scat stroker. I did a compression test and got 110-120 psi throughout the cylinders. Is that normal?

[@dannyjohnsonsgarage]

The important part is they are all the same, so the number isn’t as important as the consistency. The gauge itself may read low. That does seem a little low for a number, but again if it’s consistent you’re most likely ok

[@MrPelletgunguy]

@@dannyjohnsonsgarage I am unsure on the stroker specs and machining that was done for the engine. But yeah I was getting 112-129psi, w/ bank 2 (driver side) being ~10psi lower than the other bank.

[@jlmealer2091]

Question if you can give me a few ideas... Anyone? I have a 2002 F150 new high compression 5.4 about 10.2:1 engine (new transmission too), all new coils, etc, with no power *barely dragging at 45 mph, uphill barely 30mph, I suspect the cats, but is there a chance the knock sensor is flagging the high compression and retarding the timing to avoid the knock? I'm making time for the headers, new cats and exhaust, but concerned of the knock sensor theory.

[@sategllib2191]

4.6 2v mustangs don't have knock senors, does the f150?

[@Oliver0200]

isn't compression raised in most vehicles for fuel efficiency like around 14? or in turbo effecient vehicles

[@dannyjohnsonsgarage]

Oliver most engines are in the 9 range. Higher compression ratios are typically designed to use at least 91 octane for safety (which people don't want to pay for it they have 87 or 89 octane available. Turbo and supercharged engines (except diesels) are also 9 or lower on compression ratio for the same reason.

[@Oliver0200]

Scrun Johnson Ah ok thanks I got mixed up.

[@k.joehill8573]

What is the compression ratio on a regular 4.6 32v N/A?

[@shredfast4819]

compression ratio is 9.85:1 for those DOHC cobra motors N/A

[@calvintucker6587]

So what is the best solution for us gt owners who have the 4.6 s.o.h.c. engine? Coyote swap?

[@dannyjohnsonsgarage]

Yeah, because even supercharging will only get you to 450hp and any more will break connecting rods. Coyotes start at that level

[@calvintucker6587]

I see.

[@calvintucker6587]

@@dannyjohnsonsgarage thank you

[@calvintucker6587]

Do you reccomend wrecking yard pulled coyote swaps or new crate engines

[@dannyjohnsonsgarage]

It would probably be most cost effective to get an entire wrecked 2011+ mustang, take the drive train and then sell the extra parts. You’ll still need to buy some things like the control pack that adapts it to the older mustang but you’ll have most of it that way

[@yzfr6ws6]

I'm running a 03 cobra and I just upgraded pistons and ARP 2000s my question is I am now running a 23 CC dish piston overstock Will I lose power and was is the smartest route to go I am currently running a 2.3 Whipple right around 20 pounds of boost I am concerned that I should've stayed with the stock cc and a better person

[@dannyjohnsonsgarage]

Cobra 5.1 that's probably going to be fine with the boost level. I don't think you'd see a major loss from less CR due to more dish (if I understand you build correctly). If anything, it should be safer as well

[@martezefarmer66]

what do you think about the 4.9 stroker kit that scat offers.?

[@dannyjohnsonsgarage]

Marteze Farmer it depends on what you have as the original motor. In this case, you'd have to give up the cobra's very nice forged crank and hope he new crank is just as good

[@martezefarmer66]

Danny Johnson its a 4340 forged steel crank 3.750" stroke and swings 5.850" long pro sport h beam rods

[@dannyjohnsonsgarage]

Marteze Farmer yeah, that sounds like it would be a good one. What car is it on? 6 or 8 bolt?

[@martezefarmer66]

Danny Johnson it's for a terminator. I'm doin a cobra swap in a fox

[@dannyjohnsonsgarage]

Marteze Farmer that's pretty good then cause you can sell the stock parts to offset the stroker is the parts are still good. Make sure the new one is 8 bolt if you plan on using the same clutch

[@CT-pc3rh]

Can you put a cobra bottom end in a 2v.

[@dannyjohnsonsgarage]

c t 23 Yes, you can. There is a little more to it if you wane to go dohc and you should use the cobra block for that, but the crank, rods, pistons can all be used.

[@CT-pc3rh]

@@dannyjohnsonsgarage bro you're awesome I have a 99 Mustang GT it has a hundred and fifty thousand miles on it I want to do heads or supercharged it I work at Woody Anderson Ford and some of the Mechanics for like you're building this top-end motor too much the bottom and can't hold it so with the cobra being forged I was wondering could I put forest in there I'm no mechanic and that's why I'm asking these questions

[@CT-pc3rh]

Forged not Forest sorry talk to text

[@dannyjohnsonsgarage]

c t 23 You may enjoy my brother’s old Bullitt. Research the “tork tek” supercharger kit. It uses the cobra blower on the 2V. His car also had a mmr600 bottom end (which may also be a cheaper route) as it comes with pretty much the cobra internals. kzbin.info/www/bejne/o6m8mpqAoruFiKs

[@revilo4.6]

Sounds like Jeff Goldblum am I watching "The Fly Builds a Race Car" great content tho.

[@russlarson3585]

so how much does boost change compression ratio,my 03 has about 17 lb boost

[@dannyjohnsonsgarage]

russ larson the compression ratio will not change because it's calculated by the space in the cylinder and combustion chamber, but the pressure will certainly change. I'm not sure how you would measure that.

[@Nicecardude100]

www.xcceleration.com/cr-boost%20101.htm)

[@lilmayofanb1105]

I'm also running a procharger

[@Cwn808]

4.6 dohc came first in the 93 mark viii

[@lilmayofanb1105]

Yes i did and it still overheating

[@crownvictorialifestyle4421]

lil mayo fan B time to change head gasket

[@smackledorfmcsween]

To save the majority of you people the trouble of wasting all your money. Get a 5.4 3V. Buy forged rods and pistons. Get a shallow mount oil pan and if you feel scared buy a scavenger pump and tap your oil pan. Now you have 5.4l. Everybody gets one.

[@dannyjohnsonsgarage]

I would still prefer the DOHC over a 3V. If anything, get a 5.4L DOHC setup going 🙌🏼

[@overbuiltautomotive1299]

i suspect water injection needs to be used more and run 87 or 93 no e85 an all nasty stuff

[@29kalel]

Correction 4.9 engine.

[@dannyjohnsonsgarage]

correction to the correction. The old 5.0 is 4.948 and the new is 4.951. Both are under 5.0 liters, but the newer actually follows the official rounding rules to get to 5.0 😉

[@jlrockafella]

5.0>4.6 the 80's got it right.