Ideal Combustion?
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Joined: Dec 1999
Posts: 2,022
From: MD
What engine are you putting them on? Specifically... What engine size, cam, piston type, head gasket, induction, intended use of engine... There are a hundred different variables which affect ideal combustion chamber size...
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Joined: Oct 2002
Posts: 37
Originally posted by Marc 85Z28
What engine are you putting them on? Specifically... What engine size, cam, piston type, head gasket, induction, intended use of engine... There are a hundred different variables which affect ideal combustion chamber size...
What engine are you putting them on? Specifically... What engine size, cam, piston type, head gasket, induction, intended use of engine... There are a hundred different variables which affect ideal combustion chamber size...
SSXeon
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Joined: Dec 1999
Posts: 2,022
From: MD
Well in that case you don't want either of the two. Assuming you are talking about the 330HP HO 350 - with Vortec heads, you would want at least 64cc chambers. That's what the Vortecs have, and would keep compression at the advertised ratio. Upping the compression to just under 10:1 with a 58cc chamber would be a good idea. It'll keep that cam happy 
I still don't know why AFR can't offer a 64cc or 58cc head without the extra $200+ milling fee. Their heads are expensive enough!
I still don't know why AFR can't offer a 64cc or 58cc head without the extra $200+ milling fee. Their heads are expensive enough!
Thread Starter
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Joined: Oct 2002
Posts: 37
Originally posted by Marc 85Z28
Well in that case you don't want either of the two. Assuming you are talking about the 330HP HO 350 - with Vortec heads, you would want at least 64cc chambers. That's what the Vortecs have, and would keep compression at the advertised ratio. Upping the compression to just under 10:1 with a 58cc chamber would be a good idea. It'll keep that cam happy I still don't know why AFR can't offer a 64cc or 58cc head without the extra $200+ milling fee. Their heads are expensive enough!
Well in that case you don't want either of the two. Assuming you are talking about the 330HP HO 350 - with Vortec heads, you would want at least 64cc chambers. That's what the Vortecs have, and would keep compression at the advertised ratio. Upping the compression to just under 10:1 with a 58cc chamber would be a good idea. It'll keep that cam happy
I still don't know why AFR can't offer a 64cc or 58cc head without the extra $200+ milling fee. Their heads are expensive enough!
SSXeon
Registered User
Joined: Dec 1999
Posts: 2,022
From: MD
Yeah, a domed piston will take care of that problem. Just make sure to keep them below a 12cc dome, or your compression ratio will be a bit high. One other thing to note, even with a relatively mild cam like the one you are considering, any time you use domed pistons YOU MUST check for piston to valve interference!
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