Twin Turbo Help

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Dec 11, 2002 | 05:59 PM

jcnorthwest

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Joined: Dec 2002

Posts: 2

From: Tampa Fl.

Twin Turbo Help

My buddy is having trouble finding less than 9 to 1 pistons so he can turbo his lS-1. Here is what I was wondering. I don't have anyone around that can answer my question. I have been told the LS-1 truck 6 liter motor has the same intake and exhaust runners as a LS-6 head. If this is true can you put the 6 liter head on a 2000 Vette LS-1 block and put a LS-6 intake on it? Secondly if you do that what is the compression ratio? Is there any hi-performance info out there on the LS-1?

Thanks in advance for any help you can offer.

Jeff

Jun 4, 2003 | 05:29 PM

ABeasst

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Joined: Nov 2002

Posts: 114

From: Raleigh, NC

you can put a LS6 intake on any ls1...I put one on my 99....dont know the answer to your compression question though.

Jun 4, 2003 | 05:34 PM

RS Dragster

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Joined: Jan 2001

Posts: 775

From: Alexandria, VA

Yes, putting 6.0L heads on any LS1 block will lower the compression. Not sure how much, but I believe it's like .2-.3, someone please correct me if I'm wrong...

Jun 4, 2003 | 08:32 PM

crazyswede1027

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Joined: Mar 2001

Posts: 180

From: Virginia

you may want to call a piston manufacturer. They should be able to anwser all of your questions any maybe even make you custom pistons for your applications. I think hte current high performance pontiac has an article on a piston manufacturer who makes custom pistons. Other than that I am no help to you.

Jun 8, 2003 | 06:19 PM

RxNupe

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Joined: Jan 1999

Posts: 111

From: Nashville, TN

There's an article on GenIII cylinder heads in GM High-Tech Perf (May 2003 issue). I'm sure this would answer all your head questions. In fact they recommend LQ4 or LQ9 6.0L truck heads for blown and turbo applications. The article gives you all the stats. Unfortunately I don't know what that crap means so i can't answer your exact questions.

http://www.gmhightechperformance.com/

Jun 8, 2003 | 08:09 PM

treyZ28

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From: looking for a flow bench so Brook and I can race

Quote:

Originally posted by RxNupe
There's an article on GenIII cylinder heads in GM High-Tech Perf (May 2003 issue). I'm sure this would answer all your head questions. In fact they recommend LQ4 or LQ9 6.0L truck heads for blown and turbo applications. The article gives you all the stats. Unfortunately I don't know what that crap means so i can't answer your exact questions.

http://www.gmhightechperformance.com/

you are the second person i've head that from

are 6.0 heads different than5.3 and 4.8 heads?

i thought a 5.3 was a destroked 6.0 and a stroked 4.8

Jun 9, 2003 | 01:10 AM

slvrbird2000

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Joined: Jul 2001

Posts: 456

From: sweetpea's bedroom ;)

Trey, the 6.0L heads are basically Poorman's LS6 heads.

If you want to really have a good LS1 for boost, either call Thunder for some forged pistons that will lower your CR, or get a 6.0L Longblock (aluminum heads, cast # 317). Or you could do a search on www.LS1Tech.com

scott

Jun 9, 2003 | 05:43 AM

treyZ28

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Joined: Aug 2001

Posts: 3,505

From: looking for a flow bench so Brook and I can race

Quote:

Originally posted by slvrbird2000
Trey, the 6.0L heads are basically Poorman's LS6 heads.

If you want to really have a good LS1 for boost, either call Thunder for some forged pistons that will lower your CR, or get a 6.0L Longblock (aluminum heads, cast # 317). Or you could do a search on www.LS1Tech.com

scott

whats different about them

me thinks my truck needs a head swap