
Originally Posted by
timsrv
Sounds like you're getting it dialed in. I never worry too much about actual compression numbers, it's the consistency. I usually pull all the plugs, then it's easy to count the compression pulses. I always go 5 pulses per cylinder & typically see around 160 psi or so each.
Other than the built-in transmission cooler the radiators are the same, but I suspect the original one has better (thicker) tanks. If I had to run an automatic radiator I wouldn't hesitate to do so, but if I had a choice, I like things to be original and specific to the vehicle I'm working on. If I were in your position, to rule out the radiator, I would have the original radiator recored with a high efficiency 4 row unit.
I'm indifferent on the brand of radiator cap you use. Just make sure the seal area of your fill port is smooth around the periphery (no pits) and the rubber part of the cap fits correctly over it. Tim