i have a 1989 ford mustang with a 302l small e-cam stock heads a b&m 144 blower and a 650 holly.. now what heat spark plugs should i use and what should i gap them too..

 

i dont know about the heat but the gap i would have to say just start at like 40 or so and just keep adjusting them till you find what works best.

 

do you want to sell the blower?????????????????

 

Autolite 24's gapped at .035 IMO

 

What issues are you having with the car now? Any ignition upgrades?

 

Dont want too hot of plugs as it will cause detonation under boost but they have to be gapped close enough to ignite the A/F mixture under boost so closer than factory tolerances depending on the ignition system. If you have a higher power coil then you should be able to gap them wider.

 

I've been told that under boost , the spark can blow out if too much gap .

 

iridium G6 cold plugs work great in nitrous app cars, should do fine with a blower.

 

Dont use platinum plugs under any circumstances with boost though. Platinum doesnt cool quick enough and will cause detonation.

 

This what I'm running too with a Vortech pushing 10LBS of boost.