[carmine]

Priobe: Been there, done that.

The alluminum heat shields you discribed i made last year. Helps about 10%.

When the hot engine is shut down the main bulk of the heat is actually traveling from the heads through the intake runners of the head and up through the intake runners of the intake and into the throttle bores of the carbs and then is trapped there buy a closed throttle plate. this traped heat in the ruunners and throttle bores then heat soakes into the carb body.