You're best guess please.
Jack,thanks for the reply.Was looking at my paperwork on my 340 today.I built that in 1995 and have had -0- issues with it.Not a ton of miles, but two tons of fun.Kept it to 6/7 psi and just never touched it.what kind of boost do you run,and do you have manifold air temp.I’m going 6% over so thinking I mite want to look at temp in the plenum.Oh, timing back then didn’t understand that boost don’t like timing.And was running as much as 35% total,but also a fair dose of 100LL most of the time.
Bob
