Originally Posted by mmphillips
I have a sbc 355 with 11.5.1 dome pistions,dart heads,lunati 515 lift cam.that i use to have in my drag car,i use to run 110 octane in it with no problem.my question is what is the lowest octane i can in this?i want to be able to run this in car that is street legal.
I ran a 50/50 mixture of 110 and 93 pump gas in a 11.5-1 396 with no problems.
I believe straight 110 is a bit overkill for a 11.5-1 motor, that's what I run in my 13-1 496.
JMO<Cp