[tbirdtbird]

"a half a car of Barrs leak"
half a car? or half a cup?

Could be too much sealer and clogged your tubes.

Put ball in lower neck. Fill with H2O. Yank ball should drain in less than 4 secs elese clogged.

Use IR temp gun should have 30* diff from top to bottom.

Be certain base timing is dead on; late timing the engine will run hot as hell.

Going up hill do not retard timing all the way, only about 1/2 way