11.0:1 compression and boost???

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Jul 24, 2008 | 01:25 AM

#31

Spoolin

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From: Here and sometimes there too.

I don't think you can find forged pistons for a 4.8L... could be wrong though. I say give it a shot, we'll all learn something new hopefully.

Jul 24, 2008 | 01:41 AM

#32

stock48

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Quote:

Originally Posted by zippy

Here's a video of a friends GTO. This is from when it had the LS2 in it at 10.9:1 compression. http://videos.streetfire.net/video/D...gto_141680.htm Link He ran that for quite a while until the bolts came loose from the cam gear. He now runs an LQ9 with a stock longblock except Patriot Gold valve springs and an LS6 cam. It now puts down around 850RWHP with 10.0:1 compression and a turbo upgrade.

That's alot of power.

What are his track times? Video link wont work for me

. Is that on 91 octain with just water meth?

Jul 24, 2008 | 05:32 AM

#33

Wilde Racing

How do I change this text

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Quote:

Originally Posted by parish8

i would keep it that way but fab up some super trick fuel system where it ran on 91 octane most of the time but under boost phased in some race fuel. be running race fuel any time it is over more than 1-2psi. tune would be some work.

Sounds like what I have planned...

Jul 24, 2008 | 06:43 AM

#34

zippy

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There was a guy on here with a 4.8L with forged pistons. I believe it was 8ALTNG. That GTO did those numbers on race fuel and meth. It was holding together fine until the cam bolts backed out. The car has went 11's at 134. It has a slight traction problem. They will be back out with it this fall shooting for 140+mph trap speeds.

Jul 24, 2008 | 06:55 AM

#35

Tootall

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Jul 24, 2008 | 07:21 AM

#36

stock48

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Quote:

Originally Posted by zippy

Ya, I figured it would be fast. If they run it with the 850HP tune it could go 145 ish MPH. I could see the LQ9 rods, and pistons handling that, they are a lot beefier than the pre 05 LQ4 stuff.

Jul 24, 2008 | 07:30 AM

#37

zippy

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From: Las Vegas, NV

I agree. As long as no fueling issue's come up it should hold up fairly well. The last setup lasted for 1500 miles or so. Most of that wide open.

Jul 24, 2008 | 12:30 PM

#38

97 Z Me Go

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In my camaro im running a stock bottom end 2002 ls1. Has 243 heads on it. pushing 5 pounds on it. makeing 574 to the wheel. I dont know the compression exactly cause i never sat down to figure it out but it should be over 10:1

Jul 25, 2008 | 12:14 PM

#39

zippy

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From: Las Vegas, NV

This kind of thing certainly is attention getting from me though. Lately on here it seems some are just trying to see how much boost they can make. I have more interest in seeing how much power can be made with 6-10psi of boost (streetable numbers to me).