Quote Originally Posted by chevydrivin
the timing weights are removed and welded up at full advance. Runs 118 octane and normally 8 to 10 psi.
Welding the timing in a fixed place isn't really the way to go. At low rpm, meaning under 4000, you need to have less timing and then as the piston speed increases, you can have more timing, thus the weights. MSD makes a wonderful distributor and it is all electronic plus it has the option of vacuum in addition as well, but it is up to you to set it to the desired performance according to the motor. But at 3000 rpm you would want say 32 degrees and by the time you hit 4000 rpm you could have the timing at 38, provided, provided, provided.

118 octance will allow you perhaps an additional 6-8 degrees of timing or 150-200 hp power adder. But it in no way can compensate for 25 lbs of boost. What should be done is to install a timing retarder that works off of the boost so when boost is added, the timing automatically retards.

I have mine set up for nos so that when I spray, the timing retards 10 degrees.