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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#34868 06/23/2002 3:25 AM | Joined: Dec 2001 Posts: 17 Junior Member | | Junior Member Joined: Dec 2001 Posts: 17 | Can anyone tell me how to figure compression ratio for a head after it has been milled. I have a 402ci. I am looking at boring the block 30 over and putting .180 domed pistons in it. Stock pistons were .100 dome. The stock compression for this motor is 8.5 to 1. How much would I have to mill the heads to get around 9.5 to 1 compression? Joe
Joe
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#34869 06/24/2002 11:32 AM | Joined: Jan 2001 Posts: 662 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 662 | http://www.cswnet.com/~carother/compression_ratio.htm | | |
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