highest hp on stock LQ9 heads?

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Aug 2, 2006 | 07:03 PM

Willem @ Fuel Injection Concepts

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From: Schaumburg, IL

highest hp on stock LQ9 heads?

Just curious what the current "record" is.. havent seen many people with 600+ using stock heads on here even though im sure they flow enough to be taken into upper 600s with boost no problem.

Aug 2, 2006 | 07:33 PM

eb02z06

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From: Waterloo, Ontario

606 rwhp on 8psi on stock 317 heads for me. ECS has stage 1 combo that makes 740rhwp at 14psi with there Novi 2000 kit.

Aug 2, 2006 | 08:26 PM

2002/Black/SS

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dosent W2W have their turbo kit on a couple LQ9/LQ4 truck motors with stock heads hitting 800?

Aug 2, 2006 | 08:47 PM

trtturbo

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We have had a couple of cars make over 600 with stock #317 heads; one over 650

Aug 2, 2006 | 09:59 PM

y2khawk

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ported ones have gone bottom 8's, 170+

Aug 2, 2006 | 10:28 PM

parish8

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From: omaha ne

i got to 640rwhp thru a tcase and 4l80e. the turbo was maxed. i bet it would go 800rwhp easy with more turbo.

this was a t76 on a 6.0 with cam, springs, head studs and rod bolts. something like 14psi.

Aug 2, 2006 | 11:18 PM

00turboT/A

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(Cablebandit) Jerry has hit 750RWHP with them and out of turbo. And now I think with his new turbos he is going for around 850 RWHP

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Aug 3, 2006 | 01:07 AM

BUYAMERICAN

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1,200 rwhp.. is highest I can recollect. I not sure what the record is, there is probably a dedicated track car pushing more.

Aug 3, 2006 | 11:22 AM

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Willem @ Fuel Injection Concepts

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Quote:

Originally Posted by parish8

wow! i thought the 6.0 ha weaker rods/pistons than the stock ls1! was that an all iron 6.0 or an aluminum headed one?

Aug 3, 2006 | 11:28 AM

#11

JMBLOWNWS6

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From: New Braunfels ,Tx

Made 650 with 317 LQ9's hand ported

Aug 3, 2006 | 10:37 PM

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TURBO8

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NO porting, just a 3 angle valve job. Zo6 cam, stock 5.3 block, 630hp 684tq.

Aug 3, 2006 | 10:45 PM

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stang90gt50

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I remember when Rob Reymer (sp?) made like 800 rwhp on stock 6.0l heads

Aug 3, 2006 | 10:47 PM

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ABeasst

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you mean "supposedly" made

Aug 4, 2006 | 06:23 AM

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cablebandit

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From: Cleveland, OH

mine arent stock...they are gtp s2 #317...bout 2 years old or so.

Aug 4, 2006 | 05:22 PM

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MiaSSmaro98

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will an angle job increase power?wat is better 5 or 3?also will a small port and polish job help for 500 rwhp t70 build or it will be just a waist off money