please help with compression ratio

Jan 6, 2014 | 08:08 PM

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please help with compression ratio

I have a set of 243 if I was to put them on stock lq4 what would comp be at ?
Same heads on lq9 what would it be

Jan 6, 2014 | 08:58 PM

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243 heads will put you at 10.40:1 CR assuming the piston is .007 out of the hole on average

Lq9 w/243 heads would be 11.17:1 CR estimate