IF YOU HAVE A 93 OR LATER CYCL HEAD, YOU WILL HAVE PINGING UNLESS YOU SET THE TIMING AT AROUND 6 DEGREES

Jerry-

You know I love you and I respect you, but I do not agree with the above.

I am running a '95 head on top of a '91 bottom end with a .040" overbore. Stock early injectors and computer, larger MAF and TB, a Delta cam and a header. Timing set at 12*, no pinging unless I am pulling a steep grade, like really STEEEEEP grade at speed. There is only one hill that does that to me around here and I have not pulled it with high grade gas yet to see if it makes a difference.

BTW, for reference, the CR cc'd out to 9.3:1. Power is great. It pushes 35's with 5.38's like a dream. Avg MPG is about 22-24 (mostly hwy) with about 2200mi on the rebuild.

Michael