I was thinking of wrapping my headers with that header wrap or tape stuff. Any reason not to? Does it help a lot with heat? I have a lot of problems with my spark plug wires melting cause they are to close. I have done everything could think of to keep them away but they are still close. Thanks.
84CJ7 SOA,35's,OnboardAir,Dual winches,Full Cage,Snorkels, and more OverMost 4WD Club
I used it on a Hurst Olds Cutlass I built a new motor for back in the early 90s, the headers were almost against the starter and we were eating starters from the heat. Wrapped the header and never had a problem with a starter after that. And boy was that car ever fun!
Header tape will transfer the heat from under the tape to downstream of the exhaust flow where the tape stops, That's where the pipe will crack.
Unless you drag race your rig or run at high RPM alot, headers are not the best choose. I use 60's ram's horn cast iron manifolds from a small block 'vette. They have good flow(2.25"), sweep up and away from the plug and are thick enough to absorb heat and release it slowly at a lower temp then a header's red hot thin wall tube.
I know you want to use the header (because you have them) so try using insulating sheathing around the wires and insulating boots on the plugs and add heat shields next to the plugs.