busterrm said:I am thinking of replacing the HEI distributor with a better brand, most offer 65k volt coils. Would it hurt to have that much voltage when 40-45 is all that is needed for engines under 11:1 compression? I'll have to reset the vac adv for the 8 degrees of vac advance at idle, and check the mech advance. But I had this HEI when was building this engine and was strapped for funds. So now that I have more money I want a new one.