Update-
Tranny removed. No issue with the tranny. The input shaft spins free. Looking in the bell housing hole, no apparent issues.
With the tranny out, starter out, dizzy out, fuel pump out, pullys loose, and rockers loose, I put a breaker bar on the crank and it is still seized in both directions.
To confirm, all valves ends and springs appear good and held up by the keepers. I didn't do the straight edge deal, but I think that would be a good idea.
I put a borescope in the timing cover, all looks good. Pics attached. It's very difficult to get good pics of the some cylinders where the piston sits high in the hole. Some pistons are clean others are dirty.
The lift plate is on the intake and I can pull the engine tomorrow night and put it on the stand. Saturday, I would pull the heads and pan and reassess. I have Monday off, and if I want to get deep, I can drive the engine to the machinist who is about an hour away.
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1965 Pontiac GTO
455/469 w/ #48 Heads, '65 Tri-Power
9.25:1 CR
Stump Puller Cam
Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00
3.55 Rear Differential
Front: 225/60R15 Height: 25.6"
Rear: 275/60R15 Height: 28"
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