[951mat]

Tried starting it w/o cap. Still got hot quickly. Within 3 minutes its up to 180. 5-6 minutes is pushing 200. I have a 1/8" hole drilled in the thermostat. Within 20 seconds, I'd estimate, my upper radiator hose (cool flex) is warming up. I did find much of my hot engine bay issue. side pipe gaskets blow badly on both side. That will significanlty reduce under hood temps, but doesn't explaing upper radiator hose warming so damn fast. Thank you all again for the help.

Underdrive pulleys, my pulley on the crank shaft is ~5.5 inches, the one on the pump is same or 6" max. Are these actually underdriven sizes?

Mat