[Sirrotica]

FWIW, about 20 years ago I changed a spider on a 4.3 Astro van. I bought the GM part instead of buying an aftermarket part, so I didn't have to do the job twice. Well so much for paying more for the GM part thinking it was better quality. The new one filled up the engine up again with fuel almost as soon as it started up. The local GM dealer warranteed the part with another one, but I still had to do the labor twice.

Any possibility that the new part leaked as mine did? Running the engine with oil diluted with fuel could have finished it off.

I never dreamed the new GM part would leak worse than the original one with cracked plastic lines. It's a stupid design using platic lines that are constantly exposed to hot oil, and expecting them to last, then when they do fail you can lose and engine pretty fast if you don't catch it right away.

The distributor can be off as much as 20 degrees, and the ECM will compensate for it. You should use a scanner to reset the timing if you didn't mark it before removing it initially. Usually lifting the distributor up 1/8 inch or so, it should stay engaged in the oil pump shaft. But if the nylon guide collar split between the shaft, and the oil pump, the shaft can sometimes become disengaged from the pump from pulling the didtributor out. If that happened you could have the shaft jumped out of the pump tang, again causing no oil pressure. Those nylon sleeves tend to become brittle, and split when disturbed sometimes.