How much hp is our stock bottom end good for?

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Jul 29, 2008 | 08:27 AM

#31

neonglh

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From: East Coast

Quote:

Originally Posted by Draven83

alot. look at STM's record setting evo. only cams and head studs.

+1 They have tons of miles on that car now, and it has gone 10.1 @ 137 on the stock block. Thats quite a bit of power

Jul 29, 2008 | 08:41 AM

#32

Ev0cRaZy

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From: Lexington, NC

Quote:

Originally Posted by PHDoc19

That's impressive! How many miles/years did you have this build?

Nevermind, you said the length of time in your post. I just don't read very well.

Went over 30k before I built a stroker

Jul 29, 2008 | 10:24 AM

#33

Jeff_Jeske

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How many of you big HP guys are still using stock head bolts?

Jul 29, 2008 | 10:32 AM

#34

Mellon Racing

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From: Virginia Beach, Virginia

I'm sure there are some but head bolts are so cheap...it's like trying to make 400whp on a stock fuel pump...is it worth saving 90 bucks to risk it on a 30k car?

Jul 29, 2008 | 10:39 AM

#35

neonglh

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I agree, I would do head bolts, and maybe rod bolts, at a minimum to be safe at high power. And change your fluids often!!

Jul 29, 2008 | 08:44 PM

#36

hytek369

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From: Boston, MA

Quote:

Originally Posted by ImprezvSE

I have about 6k on mine so far and spin it to 8200 very often. No problems so far. Knock on wood!

so stock can handle frequent revs to 8000? i guess stiffer springs would be needed up top to minimize valve float

Jul 31, 2008 | 11:52 AM

#37

Jeff_Jeske

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From: On the track

Quote:

Originally Posted by Mellon

I'm sure there are some but head bolts are so cheap...it's like trying to make 400whp on a stock fuel pump...is it worth saving 90 bucks to risk it on a 30k car?

There's really no proof that the stock hardware is junk. There's really no proof that the ARPs are any better. In fact I heard there were two levels of ARPs and the cheap $99 units are the lower grade.

May 14, 2013 | 09:16 PM

#38

EVO9-YOKED

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From: Colorado

I have run 500whp/440wtrq 27 psi (HKS 3037) for 30,000 miles, 570/480 27 psi (GT3582r) for 30,000 miles and currently 550/420 24 psi (HKS TO4Z) for about 2,000 miles and i have completely stock motor with headstuds.

May 15, 2013 | 06:50 AM

#39

PAZ06

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From: Philly burbs

Quote:

Originally Posted by Sean@Iveytune

Chelsea 612 wheel 486 tq, c16, 3yrs ago 11.0@133 stock bottom end
My DD evo 568/470 ft lb stock bottom end 3 yrs ago.........

Both stock intake, stock head. AEM engine management..........

Since then we have tuned maybe 70+ evos with stock bottom end exceeding 500 hp. Alot on flashes too.

When we started going over 500 on the stock bottom end back then it was not commonplace at all, so funny to see how common it is now.

Sean

When I get an EVO, you guys will def do the tune on it, I have heard nothing but great things about you guys

May 15, 2013 | 07:40 AM

#40

AdrenalineRush

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From: St Louis, MO

Quote:

Originally Posted by EVO9-YOKED

Epic 5 year later thread bump buddy.

Not sure if you took into account your altitude when you reformatted the correction numbers cause if you didn't those numbers are quite different than what you posted.