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Old 08-19-2010, 10:03 PM
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Ok I just ran the math on my setup. The heads I have are stockers with large combustion chambers leaving me with a total of about 7.9:1 compression. I was considering milling the heads .020 to get my compression back up to 8.8 or 8.9. I am running a full forged engine planning about 20psi. I am concerned the additional loss of deck surface of the heads will make them lift easily. Should I just go aftermarket? What are the thoughts?
Old 08-20-2010, 09:21 PM
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anyone?
Old 08-21-2010, 04:49 PM
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Ok let's do this. What kinda boost is everyone running with stock cylinder heads? I see people are saying 8psi on stock heads they lift but I am running cometics and arp studs. That with a lower compression ratio I figure I may be ok.
Old 08-21-2010, 04:54 PM
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i know a guy running 20lbs on 317 heads i goin to try 18-20 on my slightly milled 243 heads
Old 08-22-2010, 10:45 AM
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ok sweet thank you. anyone else? mods can we move this to forced induction sub-forum?




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