Great thread, are you going to pull the heads?
Interesting to see how the Pontiac V8 developed. The 62 I rebuilt still had that 4 bolt water pump and that crazy cork front seal but the timing cover was aluminum not cast iron and no reverse flow heads of course. Also had the hinged oil pump pick up. There was a dished piston version available that would allow for a regular gas 389. Mine was the venerable 4bbl 10.25:1 303hp version, great production engine.
BR's,
Mark
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