Calculate my compression plz
09-01-2012, 08:43 AM
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09-01-2012, 11:45 AM
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These are the 3.905" pistons with -2cc valve reliefs, right? Assuming normal deck height and GM MLS gaskets and uncut 317 heads with 71cc chambers, I get about 9.6 CR (which is a little low if this is N/A).
09-01-2012, 06:04 PM
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If You go to Wallace racing website They have every concievable engine related calculator known to man free ,,,,,,,,static , dynamic , effective compression ratio calc ,,,,,,,every cam calc every 1/4 n 1/8 mile calc ,,,,gear ratio change calc ,,,,,vol efficiency ,,,,,,,,probably 200 or more different calculators