compression? 6.0 Heads on 5.7 block
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From: Bay St. Louis, Ms
compression? 6.0 Heads on 5.7 block I've searched this & can't find an answer. Even a good guess will help. How much would a set of stock 6.0 Heads on a Stock Piston 5.7 LS1 drop the compression?
I'm thinking from 10.1:1 down to maybe 9.6:1... But it's hard to say. If the 6.0's were 72cc, and your stock heads are 67cc, then it's a drop of 5cc. Perhaps someone more knowledgeable might chime in. I'm running 6.0's but I have custom pistons.
I have read mid 9s:1 as well. Here is a sticky in the internal section about compression ratios and chamber sizes.
https://ls1tech.com/forums/advanced-engineering-tech/111207-ls1-head-combustion-chamber-cc-volume-vs-cr.html
https://ls1tech.com/forums/advanced-engineering-tech/111207-ls1-head-combustion-chamber-cc-volume-vs-cr.html
If you used a .054 gasket you would be right at 9.44:1 considering your head is 72cc's.
Others say the head is a 71.24cc which would give you 9.52:1 CR.
Now if you use a .060 gasket you would get
72cc = 9.32
71.24 = 9.4
Others say the head is a 71.24cc which would give you 9.52:1 CR.
Now if you use a .060 gasket you would get
72cc = 9.32
71.24 = 9.4
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Originally Posted by JZ'sTA
If you used a .054 gasket you would be right at 9.44:1 considering your head is 72cc's.
Others say the head is a 71.24cc which would give you 9.52:1 CR.
Now if you use a .060 gasket you would get
72cc = 9.32
71.24 = 9.4
Others say the head is a 71.24cc which would give you 9.52:1 CR.
Now if you use a .060 gasket you would get
72cc = 9.32
71.24 = 9.4
Dont go with a thicker head gasket to drop compression..... that is not the way to do it.......why risk blowing a head gasket.
Most stock 6.0L heads are a 71.2cc's so with them you will be right around 9.5:1.... like others have said.
Kyle
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Originally Posted by NA$TY-TA
Dont go with a thicker head gasket to drop compression..... that is not the way to do it.......why risk blowing a head gasket.
Most stock 6.0L heads are a 71.2cc's so with them you will be right around 9.5:1.... like others have said.
Kyle
Most stock 6.0L heads are a 71.2cc's so with them you will be right around 9.5:1.... like others have said.
Kyle
I agree, but I believe the 6.0 Trucks use a .060 gasket so that is why I threw those numbers in there.
Originally Posted by The Sad
I have read mid 9s:1 as well. Here is a sticky in the internal section about compression ratios and chamber sizes.
https://ls1tech.com/forums/showthread.php?t=111207
https://ls1tech.com/forums/showthread.php?t=111207