is 10.7.1 good compression ratio for 87 oct.........where do i need to stay for this
no. way too much compression
Just finished my 350 with vortech #062 64cc, with flat top pistons with a mild cam about 9.7 to 1 CR
runs great on the dyno with 91 octane. probably could run 87 without a problem.
btw running a 670avenger(increased jets to f68 r72) added (7-8 hp) and performer intake, timing: 31 degrees adv.
I also added a 1" open spacer between the carb and intake; this evened out the A/F mixture between left and right(added 9 hp).
I am sure these changes will hold true in your build or at least give you a baseline, especially the spacer.
I would run flat tops; I don't think you'll have a problem with 91 and may be able to run 87, if you want to be sure then use the dished you'll probably get about a 9.2-1 CR
btw final #'s on my engine were 393 hp@5400 and 432 tq@4300
either way you are going to end up with a torque monster