I'm going to check that first thing tomorrow. I'm afraid for that and the cam eccentric. It's pretty much come down to:
-Push Rod / Cam Eccentric
(anyone know what the "throw" is supposed to be?)
-Pump type
(Pump one came off of a running 383 and pump two came off of a running 440; both had less than 5k miles on them)
I really doubt the rod or the eccentric are bad.. it wouldnt
build the pressure right away then drop... I think your
getting crap pumps. are they rebuilds
EDIT
I think its a heat related issue.. but maybe the eccentric
isnt turning when it start to warm up(the hole to big)
