wont rev

Need to look at that HEI module. I had one in a car I was trying to sell. It ran me through the ringer. I bought and tried 3 different modules before I bought an MSD replacement, and that fixed it. If you know somebody with a distributor machine you might want to take it there and have it checked out for yourself. I've heard GM had different part numbers for modules, and the ones that came in the HP cars were the ones to use.