interesting! thanks!

so if the heads are the biggest contributor of heat to the intake manifolds, then doesn't it make sense to Jet coat the valve covers to keep the heat inside?

1999 Cougar V6 MTX Borla stainless, dual exhuast ST200 struts, rear strut tower brace Roush springs, rear sway bar, bodykit Steeda Tri/X, Powerslot rotors, Falken Ziex 512 Awaiting install: GMK CAI