I have a 1954 235 ci. motor, bored over .060 head is milled .035 it has Alu pistons stock valve train solid lifters, with a electrinic ignition from a V6 chevy motor. this ignition was built by a shop here in Phoenix. my problum is what heat range spark plug to start with on this motor, this will be a dayly driver in Phoenix Az ( we have very hot summers and very mild winters.)
I sure don't want to burn a piston or anything else. I know to run the motor a few miles and check the way the plugs are burning.
If you can help E mail me
thanks Bobby