I get a CR of 9.70 using a bore of 4.150" and 1.5 cc for volume above top ring and the rest of Steve's info. Swept volume is 831.2 cc and static volume is 95.6 cc.
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1967 Firechicken, 499", Edl heads, 262/ [email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule.
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