Quote:

---

Quote:

---

the pulleys are march serpentine standard size. the pump is a edelbrock. the radiator is an aluminum howe i believe its 3x26x18. i have not had it pressure tested. i figured the temps are good 180-200, so would'nt that rule out the head gaskets? running a 16# cap and i have a 22# i can try. no shroud, electric fan.

---

From what you are saying I would believe its a cap
issue... your not running hot but the cap is seeing
too much pressure or its just blowing off early
EDIT
Also you do know there are 2 style caps 1 for a recovery
system and 1 for a over flow.... make sure which you
have.... hold the cap in the up right position and
if the metal disc at the bottom is danging down that
is for a recovery system the other one the disc wont
dangle down... also make sure the lower seat in the
filler neck isnt dented

---

I didn't know that there were two different type's of caps, wonder which one I have.