67wedge runs a 268/272 at 11.4 to 1 on pump gas and i was 11.12 and ran pump 93 with a 248/254 and made my passes on pump 93 ......the higher the Intake closing ABDC cam timing event helps with this...

I checked my cranking pressure on one of those calcs(engine not done yet) and its saying 180psi and im gonna be right at 11 to 1 with a 269/269 bullet roller .... I was torn between the 11.5 /11.0 deal also...... I also had my heads milled back to the correct 75 cc rating after the cnc porting was done...