The Taylor Thunderwires that I have on right now are supposedly good to 600 degrees. Do you recommend heat sleaves with cast iron manifolds? Thanx, Rob

I use them with my wires, for those possible areas where the wires could brush against the header. It is also good to prevent any interference from any contact with metal.

with how close the wires are routed on these motors....plug boots are never a bad idea

Just a Taylor 1200°F heat sleeve on #5 with FLP LTs.

I use heat sheilding off of 80's camrys. It's free from the junk yard where these cars now populate. You'll find it lining the AC lines that run right on top of the exhaust manifold. Mine actually rests against the headers with no problems in 10k miles

-Shannon

I use the them and they rest right on my dual cat slp's with over the vavle cover wires and I have no issues with my wires.

Z~

Moroso's here...good to 2300F.