A little higher pressure cap will make it cool better if the cooling system is slightly below the required capacity to cool the engine. If all is fine, it will not make any difference, I think.

A slightly higher cap is worth a try, they don't cost much.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.