L31MaxExpress
I'm Awesome
Funny you mention that. I ran my 11:1 383 with 0.041" quench, on the stock Vortec Express van timing map for break-in. I was able to bump the timing up considerably on 91 octane.You could run 10:1 all day on cheap gas and a stock tune. The timing is so retarded you have a significant margin not to mention a knock sensor for when you get a **** batch of gas.