Compression test only at 90 psi max, timing chain off?

grumpuscreature said
Something to check would be cam timing. Almost everything in the world has the dot on the cam gear and the dot on the crank gear lined up and facing each other at 6:00 on the cam gear and 12:00 on the crank gear. Not so on a smallblock Mopar. The dot on the cam gear should be at 12:00 with the crank gear dot also at 12:00. They won't fire if they are 180 degrees off. Hope this helps.

OldmanRick said
I'm not sure the compression numbers mean anything since the engine hasn't run and the rings have not been seated? Did you try swapping the dizzy 180* as was recommended in the last thread?

Seems like both orientations would be correct since the cam spins at half the speed of the crank. The dots will line up at 12:00 - 6:00 and again at 12:00 - 12:00.

I would position the distributor so the rotor points to cylinder #1 when #1 is at TDC.