Building A Stealth Crate 427 Big Block Chevy - Engine Power S1, E17

Cylinder head secrets by Pro Stock engine guru Pat Topolinski unlock the potential of a big block Chevy crate motor.
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PARTS USED IN THIS EPISODE:
ARP: Engine Accessory Bolts, 12-point, Stainless, Polished, Chevy, LS Small Block, Carburetor Fuel Delivery, Kit
More Info: pntv.us/pn_pt_883
Chevrolet Performance: Engine Assembly, Crate Engine, Chevy 427, 480 hp, 444 lbs./ft Torque, ZZ427/430 , Each
More Info: pntv.us/pn_pt_877
Clevite: Main Bearings, H Series, 1/2 Groove, Standard Size, Tri Metal, Chevy, Small Block, Set of 5
More Info: pntv.us/pn_pt_880
Demon Fuel Systems: Carburetor, Street Demon, 625 cfm, 4-Barrel, Square Bore/Spread Bore, Electric Choke, Composite Bowl, Each
More Info: pntv.us/pn_pt_884
Lunati: Rocker Arms, Voodoo, Full Roller, Aluminum, Black, 7/16 in. Stud Size, 1.7 Ratio, Chevy, Big Block, Set of 16
More Info: pntv.us/pn_pt_878
Royal Purple: Motor Oil, Multi-Grade, Synthetic, 0W40, Quart, Each
More Info: pntv.us/pn_pt_882
Summit Racing: Porting and Polishing Kit, Deluxe Porting, 56 Pieces, Clear Plastic Case, Kit
More Info: pntv.us/pn_pt_879
Summit Racing: Summit Racing Compression Calculator
More Info: pntv.us/pn_pt_881
Kimberly-Clark Professional: Scott Pro-Shop Towel, Blue Roll
The Industrial Depot: Fasteners, Hardware and Shop Supplies

[@BigRigTrig]

Watching Pat twirl a speeder handle never gets old

[@ChezJ1]

That was cool to see. 👍

[@TwentytenS4B8]

Low tension rings only gain you about 8 HP. Engine Masters tested this and that's what they found. Not worth the oil consumption and ring coking issues. Remember Audi with their 2.0 Turbo engines needing their pistons and rings changed after about 20K miles? They used low tension rings in those engines. Funny how the oil consumption went away after they installed new pistons and standard tension rings. You can pick up 8 HP by advancing the timing, a cam change, roller rockers if it didn't already have them, or installing a good set of headers. The rocker arm change they are doing probably freed up 8 HP. That engine won't last with a power adder on top of it. They'll be tearing it down for a ring job after 25K miles.

[@patfromamboy]

My engine builder built my 427 in 1983 and he was against nitrous or anything else and said “You want power available all the time so it’s always there” he also had me use lower compression pistons at 10.25:1 so I could use pump gas and it’s still running great 40 years later. It’s got a lot of power and surprised everyone including a policeman who I outran in 83. The builder made everything work together and was a master in tuning. It’s in a 1966 Chevelle which was my first car.

[@CJColvin]

That 427 Big Block Chevy is going to be a beast when its all done.

[@jeffreybamford7365]

Ain't that the truth.bur is it worth it all.little ol LS cheaper more horsepower for the dollar.

[@edwardmyers1746]

Dude that idle chop that thing had when first fired was crazy, almost like a top fuel

[@j.s.2767]

dynamic duo is back

[@johnpark6138]

You guys just went next level with the compression ratio calculation .. loved it.

[@michaelbardwell6398]

Has to be one of the best explanations I have ever seen outside of a classroom.

[@ivanmitchell3876]

i never become weary of this show.thanks power nation.

[@aaronburratwood.6957]

8:34 My brain hurts. I kept up with more of that than I thought I would. 🤯

[@guerro327]

Every time he says “now”, take a drink.

[@JerkVegas86]

Fuckn wasted bro!!

[@carlosvasquezjr92]

Dead in just under 19 minutes

[@fleetwood7888]

Those two guys always put on a great show. Thanks Pat and Mike.

[@JustAnotherOldMan]

Excellent work guys ! I’ve always wanted a 427 and love working on performance engines, this video gives me some confidence that I can learn what’s needed

[@THROTTLEPOWER]

Same here Rick!

[@haroldroberts6962]

I JUST HAD A BIRTHDAY AND THAT ENGINE WOULD MAKE A ABSOFREEKINGLUTELY AWESOME BIRTHDAY GIFT

[@aaronburratwood.6957]

I just had a great BM & yeah, same.

[@daddy6357]

Wow the math that goes into it...🤯🤯🤯 Great video guy's

[@yourmom705]

Wish I had a swapmeet selling a 427 for $3,500

[@ChiefManny1]

This 1st aired in 2014. So proly picked up the engine in 2013.

[@aumetalmental8403]

Gotta see this build!!! Big block S10, this will be a hoot.✌️😎

[@michaelbardwell6398]

Great video. Precision multi angle valve job has to be the most complicated way of saying. 3 degree valve grind ever. Just having a little fun guys. Keep up the awesome content.

[@scottlewis2218]

Man I really do love big block engines

[@PhuongNguyen-kg6sm]

Hi bro,amazing Piston look so special , thanks of video so great.

[@THROTTLEPOWER]

Great vid, really enjoyed...................... 👍👍👍👍👍👍

[@5_fun_facts123]

$3500? Dang I need to find that type of deal

[@patfromamboy]

My 427 cost 3000 to build but that was in 1983 with good deals using the mechanic’s account. It would probably be 3 times that now.

[@brandonsilvay4822]

I have the factory medium-duty version of that engine sitting in my 1974 c65 Chevy truck except for 8 years and all I did was pull the carburetor off clean the carb and put electric fuel pump from a gas can to the carburetor in it fired right up and drove home

[@bizkit81]

I watch them all!

[@teto6912]

How?

[@scottlewis2218]

Guys that is like a doctor taking a perfectly healthy patient and saying you need to have an operation lol 😂

[@TheFoxygrandpa69]

My k10 and I are drooling

[@lewisdeclouette6342]

I can't wait either

[@scottlewis2218]

Hey I defended you guys the other day I was talking about liking your show and he said well yea but they have all the tools in the world I explained to him that it takes years of experience and you must be very smart to use all those tools

[@stuartbuckley8720]

I love the information and like watching someone else do the work but it sounds like one long commercial. We all got bills to pay! LOL

[@waleskareviews2414]

AMAZING

[@THROTTLEPOWER]

I agree!!!!!!!!!!

[@steved.9839]

Matt is the man.

[@jss5140]

Saludos desde España

[@kanakamaoli9642]

Miss you Mike

[@alanarmstrong2323]

Love to see the 427 cammer Hemi !

[@warrenholmar1129]

Where is the next episode?

[@jeffrey4547]

i been getting the 450 hp 454 with the 02xx trans for free from 6,000 to 58,000 miles on them that is with a stock carb and intake with high flow heads they come with steel crank heavy rods 10.5 to 1 compression but if u change the intake and put a 850 it really comes alive

[@christophersine84]

There is just something magical about 7.0l big blocks

[@petecotter6790]

BBC is magical 😅

[@lewisdeclouette6342]

I'm at work I'm going to watch this video about eight times

[@ACE-or8bo]

i need it for my camaro

[@HP.Customs]

Nice, I’m in process of building a tall deck 427.

[@drewt3210]

Can you educate me on the advantage of building a 427BBC compared to an LS of the same displacement please? I'm always surprised when I hear anyone building the old style engines these days. Seems to my ignorant mind that the reliability and affordability combined with tremendous horsepower potential of the LS would render the older engine format obsolete. Curious to hear your side. Thank you in advance!

[@KinC.1222]

Support the RPM act...

[@sqr2024]

Always a great show, but disappointed that a perfectly good motor was torn down.

[@dougewing1571]

I had a L 88 back in 1975, it was balanced and blueprinted. I could turn that engine to 7500 every time I wanted. Even missed 3rd gear once and the tach went to 8000. It was the best rat I ever had. It lasted 4 years, and when I sold it the guy ran it a couple qts low on oil, and ruined it

[@v1-vr-rotatev2-vy_vx31]

Great info and vids, Doesn't light piston ring tensions mean more oil consumption.

[@patrickmchose7472]

Sure can

[@foxracing16]

was there not a part 2 to this?

[@thomasbradley512]

I got a really interesting question and it's not as dumb as it sounds. I noticed you polished the top of those Pistons which is a good idea. I'm curious about smoothing the edges of the dome. Instead of having sharp edges is most of those don't have rounding the edges a little bit. Would there be any advantage to that? The main reason I ask is I'm not a big fan of those domes in the piston. I prefer a flat top piston but with that 24° valve angle that's a little hard to do to get compression ratios of 10 or more to :1

[@rockingarchangel]

I know yall have to pay the bills but that royal purple is not what I would put in a sweet motor like that

[@buschenterprises4788]

This cannot be a recent video. Pat looks about 10 years younger

[@ChiefManny1]

1st aired in 2014.

[@wuznar]

First! I love this show

[@stevefranklin9920]

I'm currently trying to build a low-budget 454 bbc from an early 90's 1 ton Chevy dually. I have found that it's a factory roller cam motor which is a plus. I'm going to try to do most of it myself seeing we no longer have a local machine shop around. I'd like to get between at least 350-375 to possibly 425 hp out of it. What would you suggest for a good cam choice and intake? I'm certain you would say 1st thing to change the pistons. Small dome? Thanks! I love your channel!

[@aliciaANDanthonySandoval]

How can I get an engine built by y'all for my s10? 😜👍

[@GRockThaIsraelite03071984]

😎

[@blakebusbee7186]

I HEARD PAT GOT THE GOOD COKE and I don't mean Coca Cola KNEW EL CHAPO HES THE MAN

[@TheWilber09]

Look how Young they both look 🤣

[@RoddyDa]

What type of tape was used to protect the cylinder heads?

[@IRONHORSE427RACING]

How's come no matter how many swap meets I go to There is no way in hell I could EVER find a GM Crate 427 like that one in that good of shape for 3500.00 bucks ! sheesh.

[@blown572hemi]

Wished I could find these give aways!

[@richardsmith-qy6vl]

Hey guys I'm putting my bigblock 427 60 over in my 88 monte carlo SS what headers was it that were used on the monte carlo you guys built I am also going to use your trick on notching the a/c box on the firewall if you could give me the brand and part number for the headers I would really appreciate it thank you Rick427.

[@MagaRickn]

Very interesting, especially as I am fixing to rebuild my 1969 Chevy 427. Looking for all the pointers and help I can get! :)

[@IRONHORSE427RACING]

if you have a true 69 427 there won't be much from this video that will help you with old school parts

[@patfromamboy]

I have a 427 in my 66 Chevelle that an expert mechanic built for me in 1983 and it still runs great 40 years later. I outran a policeman and all but 2 street racers. One had a pro bracket car with slicks and I was catching him. I never have traction when I take off with skinny street tires. Did you rebuild your 427?

[@montycrain5783]

I’ve seen a big block identical to a L-88 dyno at 560hp with headers

[@SJtoobsox]

This would be so much more watchable than knife shows on tv…

[@simenskaar5843]

Dont know if you answer such. How often does a head need resurfacing when dismantled when otherwise properly working? So when before dismantling it shows no signs of warping.

[@tomashton1781]

ever notice that barrel faced top rings dont leave a nasty ridge

[@kenadams3385]

Pistons are .027" in the hole with a .039" head gasket? That's a lot of quench height.

[@Final_Boss_Racing]

Where are these swap meets I need to find directions

[@Obshowersyndicate]

Why only a 427 that's small block ci Why have all that extra weight

[@billysandoval6316]

Can you men please do a video of a 427 tall deck bbc build! NA and boosted?

[@rogerhundley9490]

I never understood the cylinder head and piston polishing on a street engine. How long does it take to carbon all that work away?

[@TwentytenS4B8]

Easy to remove with premium fuel and an Italian Tune Up. Drive it like you stole it = carbon removed.

[@edwardlopez438]

Damn they don't have them at my swap meet F me running

[@Akina_86]

Can you PLEASE do the old reliable 3.0 vulcan out of a ranger i wanna see you guys make a lil 3.0 scoooot

[@Cheezeball99999]

They won't, but I might 😁

[@48Muscle]

How could I get the parts they take off and don't use

[@HotShotHaven]

(Question to self) What swap meet were they at?🤔😁

[@mikeholguin84]

$3500 and it's a full roller? Dang, where on earth did you find that??

[@yousif7308]

How much power do you free up approximately from changing stock piston rings to low tension rings?

[@mikeg4163]

Engine masters tested this an found 8hp. Not much...

[@yousif7308]

@@mikeg4163 Seems worth it considering the price. Also I assume it extends the engine lifespan? I may be wrong though.

[@TwentytenS4B8]

Not enough to warrant oil burning and coking issues. Audi used low tension rings in their 2.0 turbo engines. Every one of them are smoke machines. They finally fixed that problem because they got tired of paying for customers to have their pistons and rings changed. You can get 8 HP by simply advancing the timing.

[@jamey4242]

Wind it up to 7500. Those 427s will turn that easy

[@gordocarbo]

It has a hydraulic cam. Never understood why they didnt stick a solid like the originals did.

[@davidheckart639]

“Stealth” 427 big block Chevy?!? You’re not fooling us. Anyone who sees or hears that it is a 427 will know that it makes power.

[@samfrazier8727]

Who makes the teardown trays you are using?

[@JB-zn1kx]

Goodson

[@budphillips9301]

Pat looks so young lol

[@dadgarage7966]

Road signs are all that's holding back the U.S. adopting the metric system.

[@donbrecker8982]

Excellent... when will ep 18 be out

[@franktaking]

I am interested on what the power adder is going to be

[@drewt3210]

This is from season 1, which was seven years ago. So, we'd have to dig back a ways to find out what they did ;-)

[@TwentytenS4B8]

Probably nitrous like on all their builds.

[@Finite-Tuning]

Umm, there is a faster easier way to get these numbers. Since CC is the only measurement we care about, then just do that everywhere, all the time. You can calculate the head gasket from pie, but everything else is a simple physical liquid measurement and there's your answer. Take that numerical value any way you like, but food color and alcohol is the best way to CC measure anything that requires a specific measurement at ambient temperature at your current level of specific gravity! Cheers 🍻

[@CraigConnors]

Does it make much difference to polish the ports to a mirror finish vs. just smoothing them out? Wow I miss working on a rebuild, almost 30 years, that's what happens when you have children.

[@gordocarbo]

no difference

[@wilson4328]

I think was like 5 years ago.

[@coryjohnson6548]

So are these actually new videos? Or are they old re-runs

[@sodderbridge]

Old from 2014.

[@CJColvin]

Old reruns.

[@budphillips9301]

Old reruns

[@ajp368]

I see the block is stamped with 7.4 so wouldn’t that be a 454 block ?

[@kenswitzer4133]

What is pig mat?

[@bmstylee]

Basically It's a liquid absorbing mat.

[@scottlewis2218]

You completely lost me on the math thing I've been a working on car's for a living for 40 years now that is y I use a machine shop lol 😅

[@toddkuli501]

OK, is this an old episode re-released? I thought Mike had left Engine Power last year some time?

[@thought1212]

i heard that he works behind the scenes, writing and stuff.

[@kerongranger2229]

Yes this is season one. This show is currently in season 8, these episodes are from 2014

[@michaelvogel2522]

I'd like that I my 1ton truck to pull my trailer

[@Warrior_Resisting_Colonialism]

Get yourself a diesel engine for that task. Nothing's more enjoyable to tow with than a diesel. So much grunt right down low, it doesn't need to rev and scream like a gas engine.

[@hillybillysillysally5086]

@@Warrior_Resisting_Colonialism I hear ya but this motor would pull the fck out of a trailer aswell and a diesel doesn’t sound nearly as good as a screaming V8

[@harveylong5878]

@@hillybillysillysally5086let's not forget the joys of diesels having DEF crap. $300+ oil changes. I'll stick with a gasser over a modern diesel anyday

[@andy347495]

They put a 770 cfm on a 427 bbc and a 950 on a wore out 305🤦‍♂️ what in the world lol.

[@2aminitials]

If I heard correctly the 770 was what Chevy used for testing the engine (at 1:22).

[@andy347495]

@@2aminitials yes, you did hear that right. I was really just busting their balls a little is all. But, at 480 some horse that's all it really needs. It's kind of funny they put a 950 cfm carb on a 250 horse 305.

[@2aminitials]

@@andy347495 Yeah they do some odd things sometimes.

[@oakcliff1884]

28th 💙

[@alpendleton8067]

Power...Nation. "EV Power Nation". Think on it. Can you beat 1600 hp in a fiberglass Edsel? EV gasser...hmm

[@המכונהשבאופנוע]

You are professionals, there'sno doubt about that! But.. there's also one big but here. 99 percent of mechanics lovers can neither understand nor apply in reality what you teach. So this whole program is one huge sales channel...

[@robertless5056]

Thanks for telling people to wait to change their oil, keeps us in business. Please tell people more stupid things, like they only have to do it once a year and don't need antifreeze in the summer

[@MrBakedDaily]

Lol stealth

[@lennydee3538]

Why are there currently ten dislikes? Prius owners?

[@TheGuitarman1968]

@Lenny Dee: Yep, you got it right. It's the Millennial and Gen-Z tree huggers that "think" their little toy electric cars are going to save the world, when in reality they are creating a whole new slew of issues to deal with. SMH.

[@stevesalkas9128]

$3500 unreal and in australia $22.000 new or more

[@joe-hp4nk]

You make a mistake, GM says it's 10:1 compression.

[@johnwilliams1091]

How much time will the clevite tri armors give? Is this a lifetime of protection?

[@TwentytenS4B8]

That depends on how well the oil and filters are changed. You could have military grade bearings ( I'm being sarcastic. ) and if you don't change the oil regularly, it'll start knocking before too long.

[@shanerorko8076]

Lololol they flow tested the heads then let pen pocket loose with a die grinder and now they need to get SAM to fix the heads. No wonder amish mike left this shit show.

[@johnmirbach2338]

😁👌👍🖖✌😎