LS7 Heads....? Which ones?

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Apr 29, 2009 | 06:49 PM

lfsglass

Thread Starter

Burning Brakes

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From: New Orleans LA

LS7 Heads....? Which ones?

Which heads are best bang for your buck heads for a supercharged LS7?

LS7 stock ported/polished?

Are Edelbrock 245 heads better than stock?

Apr 29, 2009 | 09:43 PM

PAUZAO

Drifting

Joined: Dec 2007

Posts: 1,609

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Quote:

Originally Posted by C6_Ray_RPM_Motors

That's why our cylinder heads work so well - we do the work ourselves and in-house...and it's guaranteed to flow and preserve velocity.

BTW, which heads and from whom are the "hooged out" ones and by who?

Ray, some vendors appear to be on a CFM war, claiming that their heads flow more CFM's than others, but this does not equate to a better performing head. Some heads that flow less CFM's may peform and respond better than the ones that flow higher CFM's. It is all about the "QUALITY" of flow, versus the "QUANTITY of flow. Another issue is advertising max flow at 700 lift, which realistically will never happen, even a 650 lift is on the edge of use, since no one is constantly operating their vehicles at redline all day long. Midrange lift has to be taken into account, especially for daily driven vehicles.

Last edited by PAUZAO; Apr 29, 2009 at 09:46 PM.

Apr 29, 2009 | 09:49 PM

old motorhead

Le Mans Master

Joined: Dec 2005

Posts: 6,999

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From: Southeast TX

If you're going FI, why even bother with ported heads? If you want more air in the motor, pulley down a bit. Spend the money on hardened drive train parts, stickier rubber, top of the line radar detector, and driving school. Blown Z has got to be a lot of fun!

Apr 29, 2009 | 09:57 PM

lfsglass

Thread Starter

Burning Brakes

Joined: Sep 2007

Posts: 903

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From: New Orleans LA

Quote:

Originally Posted by old motorhead

Believe it or not...your not the first to say "why bother (w/ supercharger)". I'm considering a forged bottom and figured why not when I'm that deep into the engine anyway. I assumed it was the norm.....?

Apr 29, 2009 | 10:04 PM

old motorhead

Le Mans Master

Joined: Dec 2005

Posts: 6,999

Likes: 1,685

From: Southeast TX

Quote:

Originally Posted by lfsglass

An LS7 head is a pretty awesome piece as is. No way would I even consider porting it for anything short of a max effort track machine. What are your HP goals? I'm guessing 750 very streetable rwhp is easily doable with stock heads. The drivetrain would need some pretty substantial upgrades to handle that kind of power. If that's not enough...........