10:1 static, 4.565x4.500, 78cc head, 7.1 rod, .130 dish piston, .006 down from what I remember, not sure of the IVC on Herbert roller cam, so guessed@69, so not real good info. I've just recalculated dynamic on wallace and its come out at 7.74 which then came out via that link to [email protected] to the dyno it made 673@5100 with his 950HP.
