11:1 on pump gas or add more gasket??
Ok guys. I recently picked up a SBC 383. It was to good of a deal to pass up. The motor was completly assemble when I bought it. The guy I bought it from wasn't 100% sure what kind of Compression it was making so I decided it would be a good idea to take it apart and take a few measurements. Know I'm faced with a decision. To get it around 10.5:1 ill have to run a .053 MLS gasket. With the pistons .005 in the hole that is going to put the quench at .058. I guess my questions is would you guys chance 11:1 on 91(I know there is higher octane pump gas out there but I want to be able to buy gas anywhere). Or throw a little more gaksket at it and suffer on the quech a bit??
SBC 350 40 over
Scat 3.75 crank
Eagle 5.7 rods
Speed pro pistons 2 valve reliefs 5cc (.005 thou in the hole)
Edelbrock performer RPM heads 64cc
Comp hydraulic roller 236@50
Performer rpm air gap
750 doble pumper.