With that little pump and those little lines, I would speculate that there is not enough flow. The heads are way hotter than the radiator. It's boiling in the heads, since it's puking at only 200 degrees in the rad. The boiling point of H20 at 16 psi is 260F. So the heads are at least 60 degrees hotter than the radiator.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum
RS23J71
RS27J77
RP23J71
RO23J71
WM21J8A
I don't regret the things I've done. I only regret the things I didn't do.
"Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
