compression ratio
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From: new hudson,mi
compression ratio just ran some numbers in a compression ration online.
bore=4.00
stroke=3.625
head chamber=66cc
valve relief=28.5(w2w custom mahle piston)
gasket thickness=.054
and it gave me a compression ratio of 8.07 to 1
the heads are afr 205's. is that a good ratio for the 6.0 block and a pt88 turbo?tell me what u think.
thanks
bore=4.00
stroke=3.625
head chamber=66cc
valve relief=28.5(w2w custom mahle piston)
gasket thickness=.054
and it gave me a compression ratio of 8.07 to 1
the heads are afr 205's. is that a good ratio for the 6.0 block and a pt88 turbo?tell me what u think.
thanks
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From: FL
Originally Posted by 98transguy
93 pump gas, a2w intercooler
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From: Detroit
I'd keep your compression around 9.0:1. What are you building the car for?
That is what I run and see numbers semi-close to that. I'd strongly reccommend running some higher octane fuel to be safe.
As for 800rwhp, 9.0:1 is a good ratio to rely on. Hope this helps
That is what I run and see numbers semi-close to that. I'd strongly reccommend running some higher octane fuel to be safe.
As for 800rwhp, 9.0:1 is a good ratio to rely on. Hope this helps
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From: new hudson,mi
building for mostly strip car , but like to be able to drive it to work or to cruise around on the weekends with no issues. i would probably use a mix of higher octane at the track to run the higher boost level.
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so w2w your saying its better to have 9.0-9.5 compresson for better mid range?why will the 8.x compression harm mid range?wat compression will i have on a sock ls1 block with stock internals and gm 6.0 317 heads(72cc)?
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From: FL
Originally Posted by 98transguy
building for mostly strip car , but like to be able to drive it to work or to cruise around on the weekends with no issues. i would probably use a mix of higher octane at the track to run the higher boost level.
The lower the compression, the worse it is going to drive on the street. If you are only going to drive it alittle, wehn I would go with 9-9.5. If you were to drive it more, some places it is a pain to get higher octane then 93.
Originally Posted by MiaSSmaro98
so w2w your saying its better to have 9.0-9.5 compresson for better mid range?why will the 8.x compression harm mid range?
I hope that makes sense, I am a bit tired after work
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From: Detroit
This buds for you 
nicely put
I'd rather spend twice as much for fuel then have a problem down the road because i didnt want to pay $5-8/gal for fuel. You can order VP Racing 55gal drums delieverd right to your door, like i do. The smell of the fuel is simply amazing. Turbo blue 100unleaded or MS109 is what i run. Love em both.
nicely putI'd rather spend twice as much for fuel then have a problem down the road because i didnt want to pay $5-8/gal for fuel. You can order VP Racing 55gal drums delieverd right to your door, like i do. The smell of the fuel is simply amazing. Turbo blue 100unleaded or MS109 is what i run. Love em both.
