is that too much for 93 octane pump gas is it impossble to run that with 93 octane?

 

Run half and half. 93 alone is pushing it.

 

Actually, it depends on where you are.
Here, in michigan, we have great gas (which is the only good thing I can say about this place), which I would imagine wouldnt have any problems with that compression.
California, however, has **** gas.

 

Maybe, i would said tune it very well. i know someone pushing a 12:1 b16a on texas gas. 12:5 is a little higher tho.

 

i live in dearborn right next to detroit so i guess but u know i dont want to blow my **** up over it i know suncos have 94 if u seen the around will that be safe?

 

the ultra 94 is probably the best gas around, you pay for it though too. I also like amaco fuels like at BP's and stuff, they aren't terrible. I personally like sunoco though.

 

but can i run 12:5:1 with it tho

 

possibly, you can get away with alot depend how your timing works out at the cams and at the dizzy. I wouldn't do it myself because I am not too great at tuning, but with the right tuner I would trust it.

 

I know that Endyn's custom weisco pistons advertise 12.5:1 on 91 octane. Larry designed in special reflector grooves in the piston dome that are supposed to create a more complete & efficent burn. Check their stuff out at http://www.endynracingengines.com.

 

My buddy in Colombus runs 12.7 : 1 CR in his JDM GSR on 93 pump gas and he doesn't knock. Get your car tuned, though, because running that on the stock computer is just begging for disaster.