Thread: Camshaft advice (again...)

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Thx for the CAM 101 guys, I am going to crunch some numbers now...

results are in (using 120cc heads at sea level):
Your engine summary is as follows:
Bore - 4.25 inches
Stroke - 4 inches
Rod c-c length - 6.135 inches
With a static compression ratio of 7.83:1.
Your camshaft specifications call for an inlet valve closing of 38 degrees ABDC (after bottom dead center).
Your chamber volume is 136.15 cc's. With this camshaft your dynamic, or effective stroke is 3.70 inches.
Your dynamic compression ratio is 7.32 :1 corrected for cam timing, altitude, and rod length.
Your dynamic cranking pressure, corrected for cam timing, rod length and altitude is 141.59 PSI.
Your dynamic boost compression ratio, reflecting static c.r., cam timing, altitude, and boost of 0 PSI is 7.32 :1.

These numbers look sad