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Ol' Ron · 06-17-2020, 06:45 PM

Lawrie
That's a good combination, the resulting Cr is around 8.3. However, if you need more angle mill them because the valve clearance is very high in the CNC heads. So 9;1 is pretty easy to get. It might be alittle hi for a stock cam so something like the 1007B would be a good cam to keep thre low end torque. I have an engine running woth this combination and the owner says it's sweetheart around town.

06-17-2020, 06:45 PM	#5
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Re: high compression cylinder heads Lawrie That's a good combination, the resulting Cr is around 8.3. However, if you need more angle mill them because the valve clearance is very high in the CNC heads. So 9;1 is pretty easy to get. It might be alittle hi for a stock cam so something like the 1007B would be a good cam to keep thre low end torque. I have an engine running woth this combination and the owner says it's sweetheart around town.