427 Chevrolet on the Engine Dyno -- The Ultimate Stroker Part 5

To see this engine build series from the beginning, click here: goo.gl/e91Lmt
We are finally taking the Horsepower Monster 427 to the dyno! We've got the dyno chart and a full build sheet with every part we used in the build at this link: www.horsepowerm...
From www.horsepowerm...
The fifth video in our series building a big inch stroker motor. We're cramming 427 cubic inches into a small block Chevy with all off-the-shelf parts. This time we're finally getting the engine on the dyno to see the results of all our labor.
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[@ThunderAppeal]

The way that beast wants to hop off the stand when it starts up.

[@BlueBoyyyyyy]

Those headers was starting to glow. Nice build

[@craigdoriety9798]

Sounds like what I need in my 1970 Nova. Would like to get largest motor I can without having to go to big block

[@ericgomez3057]

If all goes well, I will have one of these before the end of 2015, love that monster!!!

[@TheHorsepowerMonster]

Eric Gomez When you get it finished, make sure to send us a pic or video on our Facebook page! (facebook.com/horsepowermonster)

[@XbodyJake]

did it all go well?

[@blackwaterdogs4256]

Keep it in yer pants, you bench-racing jockeys :-) This was just a preliminary baseline run to get some vague idea of where to go from here....there`s a TON of potential in this motor....

[@7REDDRACO7]

my guess was to keep it a low maintenance high averaging tq and hp ,street machine engine that can make your 2nd gen go 10's and not break. reliable bigger than small power. the ultimate small block stroker.

[@briannotafan3368]

gernade racing engines? not the best choise in names for a engine names as good as basket motors or spun bearing racing engines and maby stay together racing engines

[@TheHorsepowerMonster]

Yeah, Ed is definitely a fan of irony.

[@Parents_of_Twins]

I would love to do a twin turbo SBF stroker with a Man O War block and Kaase heads. Someday hopefully.

[@SilverRaven1959]

You'd end up with a bunch more power than this to!!!

[@FVBully]

Great looking engine and love the sound. Also, a bit surprised at the HP as I thought it would be higher. My little old 350 I built in my garage pulled 474 @7,000rpm but I also ran out of time for tuning at het my peak HP at the highest RPM reading and never did see a drop off. Maybe we are all just so spoiled by LS type builds that 500 just seems low. I can't believe I just typed 500 is low, what a time to be a Hot Rodder. Check my KZbin channel for my dyno pull if you are interested in seeing it. Also done on pump gas and 10.8:1 compression, nothing special.

[@rogerramjet5092]

An SBC that peaks any where 7k is a dog pain in the real world. This apples to oranges yours sounds like a drag build with zero street time boring. They built a King Kong street motor fun. Not a good comparison. built to do completely different jobs. HP shame/show off fail.

[@firemanjim324]

didn't see any dyno pulls.....

[@daltonbrennan8242]

It was running rich? My guess is it was running lean because of the cherry red headers lol

[@homefront3162]

Dalton Brennan It was costing rich

[@Vader1984]

at 1:36 you see the A/F ratio at 7.99. I'd call that rich.

[@hoofarted8709]

its because of excess fuel still burning on the way out of exhaust port into the header.....dumbass:)

[@MrTNBassmaster]

I think the HP is perfect for the street and some strip use ! And a bullet proof street engine at that . Good parts and good engine building practices = Monster Torque and that's what wins races and that's what makes you grin when you put the hammer down . TORQUE! !

[@inscoredbz]

it needs an intake & a better cam. that would wake this monster up.

[@matari7183]

I'm inspired. Awesome videos, great quality and very well explained. Keep posting.

[@TheHorsepowerMonster]

+Danny Castro Thanks for the kind words!

[@keltoy3]

Very Nice!

[@DJ9ZJ]

Hi there, as I saw the first video, I was already interested, Thank you very much for completion of the serie! Very very good craftmenship I am thinking to build one myself.

[@TheHorsepowerMonster]

Thanks for the kind words, and if you build one of your own make sure to send us a photo on our Facebook account!

[@hoffnhd6923]

Not sure if u said it or not but how much did it cost to build this?

[@Threshold2012]

Prices today, around 11 GRAND

[@69CRUZR]

I agree with many here, 427 is big block displacement, that dual plane is choking it. my 406 made the same hp w/a flat tapped cam. now this set up including a 750 w/choke tower may be a great street set up, but don't call it the ultimate hp stroker build then...great engine regardless!

[@Mutt69m]

I think this engine build is a great combo Street/Strip Week-End Warrior that will give you lots of fun of the "Run What You Brung" crowd. I would squeeze this into a 2400-2600lbs. car/truck and have a blast. A setup like that would probably get you solidly into the low 11's or high 10's, and that would be a fun ride...

[@keefespencer1173]

My dad's Nova had a 406 sbc and his car weighs right @ 3000lbs and he ran mid 9s and that was N/A and i think he's either got a 427 or 434 sbc in it now running low 9s and it's still N/A he can use the bottle if he wanted to but he just takes it to the track to have fun and keep it together and not blow it up but his buddy had a 67 firebird that he turned into a 67 camaro with full interior and small tires his car with a 434ci sbc he ran low 9s on motor and low 8s on the bottle

[@boydjoiner4652]

How did you happen to choose the Thumper Cam, wouldn't one of Comp's Magnum Cams have been a better choice for Horsepower and Torque? I believe that Comp has the Technology and would rather have peak performance than just a rough idle. Will be watching for future videos!

[@ericjohnston9272]

that's it 530 man get that intake off it put a long runner single plane on it and bigger headers its 427inches it wants more air

[@mothertree]

I like the fact that people watching this video and commenting really o know what they are seeing and making constructive points...well done,Eric

[@indyrock8148]

Right on Eric I agree. Can see the dyno showing that intake chocking the engine. Get the matching Brodix single plain with 1206 CNC gasket matching and go get 600hp.

[@slpss2002]

Nice build. Nice usable HP. I like the fact that there was not a wizard in the background porting, polishing and port matching. An engine build with results anyone can achieve.

[@nychan8958]

Great stuff guys .I thoroughly enjoyed watching your clip . I love sbc engine. Cheers new Zealand

[@johnbunting2638]

K

[@Acp0908]

Good build series. More carb and a solid roller for more power. That engine has a lot more power potential if you want it

[@7REDDRACO7]

this motor turned out great ilike how they used the 5.85" rods , dragonslayer heads, and thumpr cam, and the power isn't excessive for a street small block because of wear issues and bearings. made this a reliable street or mild mannered race engine with a howling 427 cube thumper idle be great in my 81 camaro, go on a date drive to the track run some 10's drive home scan some time slips , post to camaro forums and facebook, and make a bunch of youtube videos.

[@supersevenn]

check out my IG turbospeedinc, we did an 80 camaro with a 434 small block

[@allamar9083]

Seems as though every year or so someone comes out with a “Game Changer” invention. Lord knows I bought into a few. Not at 25$ apiece. Thanks for the info.

[@aaronmcdonald6045]

this is a wonderful build.....I'm partial to the xtreme series comp cams, HR preferred although I'm running a flat tappet due to budget but I have ta laugh at all the comments in the sections below. everyone thinks that they can and are the best, best engine builders, best tuners, know EXACTLY what is wrong with everything.....probably don't even know how to set valves or proper timing....don't know the difference between initial timing and total timing. it's just funny....good job horsepower monsters. ....weeks love to have this engine in my 3rd gen camaro....ty

[@rogerramjet5092]

Air dynos ALWAYS READ HIGH period.

[@indyme2]

Nice build. The torque and hp readings are sweet for a nice street rod. Great job!

[@TheHorsepowerMonster]

Thanks!

[@mgbchuck6527]

Nice engine, WAY more practical then my 358 that makes approx. same power (billet main caps, Lunati crank, aluminum rods, 12+ to 1 comp., .600" solid roller, massively ported 492 angle plug heads, port matched intake, 8200 rpm.--in my tube frame street MGB

[@TheHorsepowerMonster]

That sounds like a fun ride!

[@mgbchuck6527]

@@TheHorsepowerMonster It is BIG FUN, it sounds like nothing else I hear on the street (I love the sound-you can hear at 1964 sbc MGB aggressive idle on KZbin), it's pretty sporty too (MGB weighs 2325lbs.)

[@larrymagee8758]

You made a mistake with that dual-plane manifold. With a single -plane you should be over 600 hp. Someone here built a 414 sbc, same heads, and got 595hp. With the extra displacement you should get 600+ easy.

[@TheHorsepowerMonster]

I was after tons of torque, not a peak hp number.

[@larrymagee8758]

@@TheHorsepowerMonster True, but more flow = more tq and more hp. I just think the manifold is a restriction for motor with such potential. Great build though.

[@warrentrucks09]

Im impressed, the cam, intake and carb and headers seemed to be on the mild side. And even with a quick tune this thing made a metric ton of torque. The numbers might be low for some these guys who think every engine is a MAX output challenge but the numbers were actually higher than I anticipated. With a good tune you could have over 550 hp and torque. Thats serious big block power out of a small block on PUMPGAS and there is still a ton of potential. With a solid roller cam and a single plane intake with a bigger carb I know theres another 120 ponies in there. Small, light, fits in any car or truck, revs to 7000 rpm....Good Build

[@jeffrey4547]

this is a big block not a small block

[@timothybueschel7114]

@@jeffrey4547 thats a small block 427. look at the headers. The 2 center pipes are close together. if it was a big block they would be evenly spaced.

[@jeffrey4547]

ur right just i have a 427 BB

[@joecucch8261]

Yep, that's a stroker small block, and the numbers are great !!!

[@jeffrey4547]

@@joecucch8261 i still like my 454 stroker over it any day or my 427 or my 327 pro built that will hold 10,500 rpms all day pushing little more then 1200 hp with 204 heads but it has over 25,000 in it i have had over 15000 rpms built by bell automotive witch builds top fuel engines i do a lot of drag racing

[@Godscountry2732]

.Granted this is a nice engine,that should give you a lot of service,but a mild 396,427,454 could easy make 500 hp with a lot less investment,so it really depends on the application.This engine would make a great performance street engine in a early Chevrolet,while if its just a little bang for your buck,a mild big block could easily produce the same power.

[@rogerramjet5092]

Yea for another 200lbs of engine weight. I'll even give you that a BBC would be cheaper. People who build these monster SBC have vary specific reasons for doing so. I would have gone miniblower if it was allowed on a 383 0r 350.

[@holmes1956O]

Godscountry big blocks are heavy and large physically. So for me I can put the big block in my 68 nova but would rather build one of these. Better handling smoother ride easier maintenance and the same power output

[@bigvegass]

Shitbox gapping this fool laughs in van motor running an eBay turbo for less than the cost of one of those heads.

[@dynodaze5824]

Thinking a thumper cam would make efficient power was your first mistake.

[@andynuck1772]

I feel like it ran out of valvespring before it ran out intake manifold. Anybody else?

[@stevesolo16]

It looks like the valve springs fell off around 6000rpm. A little more spring and you surely will see more hp. Comp is famous for recommending inadequate springs. Did you match the intake to the heads? You are leaving a good bit of power on the table.

[@jesseelong8625]

those hydraulic rollers are the weak link here. you need a solid roller cam in this bitch to take care of that high rpm hp drop

[@dennishensley1150]

No, the ultimate small block is a 468 c. I. With 18 degree heads . A WARREN JOHNSON SPECIAL (ON MOTOR NORMALLY ASPIRIATED, NO NITROUS, 950 HORSEPOWER,THEN ADD A 500 FOGGER AND A 450 PLATE ) NOW WE'RE TALKING 1800 H.P., REAL FUN ON STREET AND NO TURBOS OR BLOWERS OR PRO CHARGERS, JUST "CAROLINA CRUISING" !!!

[@SilverRaven1959]

What a Slug...The Aussies are running small block Cleveland Aluminum Headed Fords up to 998HP...pretty close to the same CI...no impressed at all!!!

[@musclebone7875]

Is that a race or street engine?

[@josevelazquez5602]

Great video! I am build one of this monster mouse for my Chevelle! Is amazing ilustrative video. Congratulations! 😉

[@TheHorsepowerMonster]

+JOSE VELAZQUEZ Thanks, hope it helps in your own build!

Did he say "grenade" racing engines?

[@Hanks1938ELKnucklehead]

I like this build's series of videos, but not getting to tune any on the dyno makes this video a flop. Some jetting and possibly some timing adjustments could;ve really woken that thing up. You never mention what the A/F Ratio was thru the power band. Further tuning will be by Butt-Dyno? Unless you pull the motor and get some more dyno time. A lot of money spent. If you pull another 50hp and 65 ft/lbs isn't the money spent on the dyno well worth it? At least it won't blow up because it's lean...

[@moman65802]

Engine building is extremely fun, but for curiosity's sake, would it have been cheaper to purchase a ready to run box engine or do it the way you done it? For the cost, would you been able to obtain more HP/TQ with warranty?

[@HoosierRooster]

it needed more head and more cam

[@andrewlanger2168]

The link no longer works. What are the power numbers?

[@patrickmoore1017]

There is probably 30 plus horsepower left in it with a good single plane intake. I know it's been awhile, but what did she run?

[@stevedriver1476]

people keep saying oh big blocks make power like that,,,,man i dont want a 500lb tank engine when i can use a 250lb tank engine one,,yes i love big blocks ,, yes we all want big blocks but i have a car that wont accept a big block and for some reason big blocks eat fuel like no tomorrow,,yes i love big blocks,,

[@johnnyanderson4464]

So The Horsepower Monster is there a fallow up video?? How did it turn out?? Love this build I'm wanting to build a stroker for my s10 but seen this and I'm wanting this one now haha

[@howabouthetruth2157]

Check out those headers glowing red hot while the motor is wound out. They cool down quickly after they throttle down the engine.

[@Scubasteve22]

There goes another thumper cam underperforming as usual! lol. Wish they would throw em in trash..

[@SuperDave21]

Last I checked on this build it still had not found it's way into the Camaro.... do you want to sell this combo?

[@patrickmc.2011]

I want to do a lowerd s10 with a small block chevy I would be happy with 400-450 hp.

[@TheHorsepowerMonster]

***** I think that's perfect. A lightweight pickup with 400 horsepower would be a blast to play around in. I think that people get too caught up in the big numbers that the magazines publish or they read about on the forums but never think about what it's like to drive. Motors that make those big numbers are often very tempermental and make poor torque down low, and as a result they just aren't fun to drive. Personally, I'm a fan of the widest torque band possible.

[@christiansharron8421]

The Horsepower Monster I wish more people shared this outlook.

[@SpeedrunTnRC]

I'm surprised at the numbers being low and I'm not hating but another 120 should be there with that nice probably expensive build

[@johnwinters8]

bigger carb?? looked like not flowing enough air on graph.

[@Artoconnell]

14 inch flex duct will only carry about 3000 cfm ..maybe that was holding you back ?

[@ezcondition]

i've seen 406's put out those numbers!

[@wannahumpalot8924]

ezcondition #\. Oh shit, here’s another one that this build totally went over his fukn head! Ok smart guy, you asked for it! 1. Your 406 (I’m assuming factory block), has simease cylinders, that mutha fuker does NOT have anywhere near the drivability that this engine does! It will run hotter than the hinges on hells gate! 2. This was NOT a drag race build smart guy! This is an everyday driver that can handle 75 mph on the freeway with the A/C frosting your gals nips when your sloppy POS 406 couldn’t make it to the next stop sign and broke! I swoop in and rocket out with your gal! 3. A 406 can make a lot of power but so can a 3.8 Buick V6! Watch the whole series and understand the concept before making yourself look dumber than you are! FML with you keyboard racing mofo’s! That statement that you made about the 406 equals to this statement: “One time at band camp, I stuck a flute up my pussy” Make sense now dip shit? Just tell the man that you think it was a good video or don’t say anything at all!

[@king0cans]

Wish I could afford one of these for my chevelle. Just a nice set of heads would be nice.

[@Parents_of_Twins]

I'm curious as to why you guys went sort of cheap on the heads when most other components were fairly high end. No disrespect meant towards Brodix, which make some very nice heads, but it seems you might have been able to get more power with some higher flowing heads. That being said what you did get will make one hell of a fun car to drive.

[@bigsean2473]

for about 800 less could of got afr 210 or 220 and made atleast another 30-50hp

[@doon714]

low HP,, you can almost do that with a stock block and a set of cheap world product heads and a cam in a 355 SBC., for a lot less money.

[@nathanielgarrison5340]

+doon714 Not exactly the same hp, maybe in a 400 SBC but youd be in the high 300's and low 400's with a 355, but perhaps if you had a good cam, something in the stage II area yea, dual quads would help...lol. i need more money.

[@RGC1968]

Build sheet is not available???

[@stevedriver1476]

great video,,,i like the 5500rpm thingy,,thats street power thats usable,,where can i get this simmilar engine in California

[@bigsean2473]

tristar engines have great engines i like there 406 makes 545hp for around 7200

[@danieltubbs5422]

Will there ever be a follow up when this goes in the Camaro?

[@GordonWG1]

Very nice series of videos - hit the important bits without the BS that some have. Elsewhere there has been some 'discussion' regarding the merits of an EFI equiped engine Vs carb' and distributor - have you done any comparison build, or even just straight TB/EFI builds - I would expect a noticeable improvement all round provided the carb and TB had the same AFM ratings? Regarding the exhaust manifolds, did you select them from theory and/or experience or were they the 'dyno' set that were already being used? Thanks.

[@TheHorsepowerMonster]

GordonWG1 Great questions. We are hoping to eventually upgrade to a throttle body fuel injection system once the engine is in the car. And you are right, the headers for the dyno test were a set that were in the dyno room. I can't remember the specs, but they were a pretty standard set for an upgraded small block Chevy. I've got a set of Hooker shorties that will go on the engine once it's in the car.

[@GordonWG1]

The Horsepower Monster Thanks for the prompt response - the reason I was enquiring about the exhaust was because of the big difference the right/wrong set will make to the overall performance of the engine - on that note, I haven't heard anything but bad reports about 'shorty' or convenience manifolds. Whilst I know what a pain in the proverbial they can be, I would expect you would be much better off (as much as 50hp - shame you were too restricted in time to run the engine as installed) building a set for the engine in the car than using what are, IMO, crap. Anyway, it's your car and engine, so your call, be interested to see how it turns out - so happy trails and ticket free fun.

[@kevindurant3518]

it 500 hp hard to make out of a 408 mopar stroker?

[@joejones9944]

How much would this exact setup cost Me?

[@johnharding91]

A little disappointed that after all he videos of the engine build it was just a rushed dyno test. Noticed the headers were turning orange in the video wondered if that was normal or part of rich / or lean condition. Question about dyno's is when you see hp numbers for speed parts I always notice that they are given high up in the RPM range and with street cars or truck this is kind of only half the story. what happens to the torque and hp curves down low. I mean if a person were to load an engine up on the dyno down to say 2000 rpm or smidge over. Either way Great Engine would love to have it.

[@madtownmadman]

The reason you often don't see dyno pulls in the lower RPM range is because engines often have rowdy camshafts in them. An engine with considerable camshaft duration will not pull down into low RPM under full throttle. They basically don't make enough torque at low speed, to overcome the load of the dyno. However, I'm sure this engine could've started its pull a bit lower in the rpm range. They just opted not to.

[@johnharding91]

Thanks for the clarification. I have been looking for ways to increase low end torque on a vortec 350 ,, but all the performance parts etc. don't really show power gains until up in the RPM range and some kill low end torque , like your lumpty lump cam shafts.

[@Ls3guy]

nice time to put it in the camaro

[@TractorWrangler01]

So is there an update on this project?

[@estebahngoldman396]

7.O. !

[@inspireracing523]

Try the Holley Terminator EFI! :-)

[@Hidden-comment164]

Engine looks like shit

[@1lilpenguin3]

the carb sounds a lil small for this big of a chevy build, cool carb tho. i had a 750 dbl pumper in a 410 sbc and worked perfect.

[@jakefriesenjake]

Nah. The smaller the carb you can get away with, the better the throttle response. I built a 381 Chevy engine with 9.8:1 compression, 511hp @6100rpm, and 492 torque @ 4900rpm, 91 octane pump gas and the carb is a 650 speed demon. The throttle response is unbelievable. So a 750 Holley on that monster 427 should be 👌

[@michaelangelo8001]

@@jakefriesenjake "Chevy" doesn't make engines.

[@ToxicMisfitsYt]

nice

[@belldn3]

427 small block putting out over 500hp.........wtf. New meaning to the term Mighty Mouse. Chevy rules.

[@GlassTopRX7]

IDK I would still just get a LS7 at least 100lbs lighter, and about 580hp out of the crate plus it wont leak oil.

[@bigmrclean]

GlassTopRX7 guess you've worked on an ls7. I seen MANY, MANY of them leaking. That's what Chevrolet stands for. Cracked head every valve rattles oil leak every time.

[@musclebone7875]

@@bigmrclean we might leak, but we make Powerrr!

[@hulaganz]

I'm convinced the 396 is the better stroker option at this point.

[@michaelangelo8001]

That's for 350 blocks.

[@sojer6mile]

Those numbers are sad why put a top notch rotating assembly but use a small cam, amd wimpy heads. Should be making 700+ hp with a 427

[@warrentrucks09]

+Thomas Everett ..Did you watch the videos at all? Their clearly stated goal was to build an engine making 550 hp that is more than happy on pump gas with no bad habits making it totally street friendly. They also stated they wanted a strong bottom end so later if they want to change it to a maximum effort race engine the bottom end would already be there.. Cant believe you missed the entire point of their build project...way to pay attention.

[@sojer6mile]

Ls7 did that

[@warrentrucks09]

Yes and so have many others. Including this one.

[@sojer6mile]

+bubba stephens so whats the point of this. its just a run in the mill 550hp engine..... I perfer engines that make 3 times the power. they did make a strong 550 hp engine on pump that has a rotating assembly stronger than the block. but would it killed them to put so 18° cyl heads on it lol

[@920_newjuan3]

Very nice about how did this cost of you don't mind me asking

[@ShotgunKidX]

I don't know how the price stacked up when this was shot but I've wanted to make this motor myself. Priced everything out through Summit/JEGS off of the supplied parts list he released and it came out to about $9300 in parts unless I screwed something up. Didn't count any machining costs though. Hope that helps.

[@bigsean2473]

look at tristar engines

[@TheHorsepowerMonster]

[@nathanbutler8240]

Was a little disappointed in the power figured it would of been in the high 600hp if not 700hp you can get 500hp out a 383 stroker let alone a 427 small block it needs the smurf juice

[@TheHorsepowerMonster]

nathan butler You are right, this isn't an ultimate horsepower motor. But it isn't wound up so tight it can blow at any minute, it runs on pump gas, it makes good power in a real-world rpm range, it uses all off-the-shelf easily available parts, and we didn't even do any port work. That should count for something, right?

[@TheHorsepowerMonster]

nathan butler No worries, we're always looking for more power, too. Please send us a photo of your engine once you get it built on our Facebook page once you get it done, we definitely want to see it. And thanks for watching!

[@vortecturbo]

Thats the wrong cam for that combo period!!

[@OfficialDatzMe]

how much would building and engine like this run?

[@jakefriesenjake]

Too have it built, probably $15000 to $20000. Cheaper to get all machine work done at a shop, buy all the parts listed, and assemble everything yourself. Could save 5 to 10 thousand. Just research a little bit about bearing clearances and stuff like that. Get Er done!

[@georged.171]

1:40 Headers are kinda hot.

[@dannycanter5260]

Cam thumper what grate god

[@joshkeasler512]

That cam and compression ratio kills it.

[@frincon75]

i wanna see it in the car!

[@johnlucero9843]

Bow ties man it's where it's at for the heads

[@johnlucero9843]

Hey got to give credit where it started.

[@pierremorris5337]

Not impressed.

[@Umbinator]

I'm thinking that smoke coming out of the oil dipstick hole is probably not a good thing.... Why is the exhaust not contained in the cylinder?

[@holmes1956O]

Mark Umbenhower you obviously know nothing about windage

[@7979kelly]

thrashing OMFG

[@lucascdaperformance8689]

good job

[@scottwest1813]

Nice motor!

[@immadoyarealgood7803]

Would you do a build from a ford 281 stroker to 302?

[@RattleTrapGarage]

427 big block