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59RAT
08-26-2007, 08:35 PM
Hay guys I bought LS2 crate motor and put the L92 heads on it (stock no milling). What will the comp. drop to? Thanks Rod
Suicidal Racing
08-27-2007, 12:48 PM
well whats the cc of the ls2 heads and the cc of the l92's ?
Jake
08-27-2007, 02:15 PM
Rod you will have better luck finding what you need on LS1Tech.com. *Beware- that site is sensory overload!:D
59RAT
08-27-2007, 10:44 PM
well whats the cc of the ls2 heads and the cc of the l92's ?

Sorry it took me awhile to find the numbers LS2 65cc / L92 69.8cc Thanks
59RAT
08-27-2007, 10:45 PM
Rod you will have better luck finding what you need on LS1Tech.com. *Beware- that site is sensory overload!:D

Thanks Jake
Fast Orange
10-31-2007, 01:34 PM
59 RAT
I love the car!
Mike Moore
10-31-2007, 01:44 PM
Rod you will have better luck finding what you need on LS1Tech.com. *Beware- that site is sensory overload!:D

It's also bullshit overloaded too, don't believe half of what you read.
Hardcorels1.com has some pretty knowledgeable LSX people. A little attitude, but less ignorant, "what kind of wheels should I buy?" bullshit.
Suicidal Racing
10-31-2007, 03:18 PM
http://www.c5frc.com/calculators/Compression_Ratio_Calculator.htm

i did the math right after i posted the cc? and i thought i posted the answer after but guess it never went threw.
Jake
10-31-2007, 04:19 PM
It's also bullshit overloaded too, don't believe half of what you read.
Hardcorels1.com has some pretty knowledgeable LSX people. A little attitude, but less ignorant, "what kind of wheels should I buy?" bullshit.


LMAO! X2
Collinsautomotive
10-31-2007, 08:26 PM
66cc ls2 vs 72cc l92.
Suicidal Racing
10-31-2007, 11:49 PM
L92s are 69 cc

the lq4 truck heads are 71 or 72cc
fash00
11-01-2007, 03:14 AM
correct me if im wrong but the ls2 is not a 4 inch bore so the l92s will not work?
Jake
11-01-2007, 04:40 AM
correct me if im wrong but the ls2 is not a 4 inch bore so the l92s will not work?

No. The LS2 has a 4.00 bore.
Suicidal Racing
11-01-2007, 08:13 AM
ls2 are a 4.00 bore engine there the aluminum brother to the lq4 and lq9 engine

http://www.gmhightechperformance.com/features/0405htp_ls2_inside_look_feature/index.html


and you cant run the L92 heads on anything smaller then the 4.00 bore,they have 2.16int & 1.59exh valves
qwiknotch
11-01-2007, 01:24 PM
correct me if im wrong but the ls2 is not a 4 inch bore so the l92s will not work?

It is a 4inch bore. I have one. 4inch bore and a 4inch stroke, I just don't have the L92's, I have Dart LS1 heads.
Mike Moore
11-01-2007, 01:30 PM
It is a 4inch bore. I have one. 4inch bore and a 4inch stroke, I just don't have the L92's, I have Dart LS1 heads.

Just to clear this up, the LS2 does have a 4" bore, but it does not have a 4" stroke. It has the same 3.622 stroke that the LS1 has.

Qwiknotch's might have a 4" stroke, but the factory LS2 does not.
qwiknotch
11-01-2007, 01:46 PM
Just to clear this up, the LS2 does have a 4" bore, but it does not have a 4" stroke. It has the same 3.622 stroke that the LS1 has.

Qwiknotch's might have a 4" stroke, but the factory LS2 does not.

I know they have a factory 3.62 stroke, I was just stating that they definitely have a 4 inch bore. The block was new from the factory before it got assembled.
Mike Moore
11-01-2007, 02:42 PM
Oh, I didn't mean that to come across like you didn't know what you had, I just didn't want somebody to think that they came with the 4" stroke.

On a side note, is that what's in your 'stang?
Jake
11-01-2007, 03:27 PM
ls2 are a 4.00 bore engine there the aluminum brother to the lq4 and lq9 engine

http://www.gmhightechperformance.com/features/0405htp_ls2_inside_look_feature/index.html


and you cant run the L92 heads on anything smaller then the 4.00 bore,they have 2.16int & 1.59exh valves

I had a dumbass moment and forgot we were talking LS2 here.:D
qwiknotch
11-01-2007, 03:37 PM
Oh, I didn't mean that to come across like you didn't know what you had, I just didn't want somebody to think that they came with the 4" stroke.

On a side note, is that what's in your 'stang?

Not in it yet... still in the build stage. Waiting for the k-member, a-arms and headers.
Then I will be almost finished, except for some interior clean up
59RAT
11-09-2007, 10:24 PM
59 RAT
I love the car!

Thank you Sir.
59RAT
11-09-2007, 10:28 PM
http://www.c5frc.com/calculators/Compression_Ratio_Calculator.htm

i did the math right after i posted the cc? and i thought i posted the answer after but guess it never went threw.

Thanks for the calculator. If I'm doing it right it's 10.1/1 that's less than I thought it would be, I was guessing 10.5/1. I actually like it that it's lower. Rod
ls1sleeper
02-11-2008, 07:49 PM
so lets make this straight ls2 stock=no l92 heads right?
lowdeuce
02-11-2008, 11:48 PM
LS2= 4.00 bore
LQ4= 4.00 bore
LQ9= 4.00 bore

L92 heads require a 4.00 bore.
ls1sleeper
02-11-2008, 11:49 PM
im excited now :Party
njc.corp
02-12-2008, 09:25 PM
http://www.c5frc.com/calculators/Compression_Ratio_Calculator.htm

i did the math right after i posted the cc? and i thought i posted the answer after but guess it never went threw.


Thanks for the calculator

Nick--