I'm back at trying to solve this and I still need some help. Following is what I've done so far:
o Timing - 6 degrees initial, 35 degrees total
o Vacuum - I did 2 tests for vacuum:
1. Cranking Vacuum - Very erratic going from 0 to 4 in.
2. Running Vacuum - Still erratic, at 2K RPMs the sweep was
shorter and faster.
According to my book, there are 3 possibilities:
1. Carburetor or intake manifold leak
2. Burned or stuck valve
3. Broken piston or piston rings
Anything else I should look at before a tear the motor apart again? Thanks for your help.
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'68 convert, 5.0 GT-40 Crate motor, C-4, Tri-Y headers, 3.25 rear gears
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