[DeTomaso] Bad head gasket question ?

[Daniel C Jones]

Have you verified the headgasket is not on backwards?  There should be
a tab sticking out saying "front".  If the radiator isn't getting hot
but the engine is, then the flow isn't getting to the radiator.  A
headgasket blockage could do this as well as problems with the bypass
or possibly casting debris in the water jackets.  I flushed a
surprising amount of casting debris out of my engine when I had it
out.

Dan Jones