“Wrong” Water pump and/or thermostat and/or thermostat rating and/or radiator air bleed and/or block-off plate and/or surge tank/overflow tank piping configuration, …..
All are commonly seen as the likely culprits for a Pantera cooling system that has, or is suspected of having, “overheating” issues.
I present my following true experience:
when I purchased 2511 it had a Weiand water pump with no after-purchase bypass hole drilled, a Windsor thermostat, and a bypass plate with a totally blocked opening, water pump pulley was OEM, Meriah pusher fans, top of aftermarket Ron Davis radiator had a fitting connected with piping to the small surge tank in the engine bay. Both tanks were unmodified as well as the under car piping.
how did I deal with all of the anticipated “overheating” problems?
there weren’t any.
I drove 2511 with that system for well over 40,000 miles, and I live in the very-hot-Summer California Central Valley.
Moral of the story? ……
YMMV
Larry