[Greg Reimer 7376]

We have a couple of '68 Chevelles with the 327/250-245 horse engine. that engine,even after decking the block and the heads and arriving at a comfortable chamber size, is an actual 8.5 c/r. It runs fine on 91 octane 76 union right from the pump. No real difference in Et or MPH is obvious from C-12. It probably shouldn't do this according to conventional wisdom, but Tony Janes did this when bracket racing the car. I always hunted down C-12 when I went out, but there's apparantly no need for 108 octane fuel in an 8:1 engine. Problem is, the 76 wouldn't pass fuel check, so when Pomona comes, out it goes and the good stuff has to go in. I don't think we would try this with the 275 horse engine.