Camshaft, Rod Length, Boost and Altitude Correction to Compression
Your engine summary is as follows: Bore 3.78 inches, stroke 3.15 inches, rod c-c length 6 inches, with a static compression ratio of 8.7 :1. Your camshaft specifications call for an inlet valve closing of 60 degrees ABDC (after bottom dead center).
Your chamber volume is 75.23 cc's. With this camshaft your dynamic, or effective stroke is 2.52 inches. Your dynamic compression ratio is 7.16 :1 corrected for cam timing, altitude, and rod length. Your dynamic cranking pressure, corrected for cam timing, rod length and altitude is 137.54 PSI.
Your dynamic boost compression ratio, reflecting static c.r., cam timing, altitude, and 15 PSI is
14.47 :1.
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