12-14 degrees of slop.

[Rufas]

Originally Posted by Patch

Sighhhhh.......hand pulling the motor around to get to TDC......look up.....rotor is pointing at between cylinder 2-4. On top of that....the timing marks travels the distance of the timing tab before the rotor starts to move...ugh. Before I go putting a new timing set in this, I suppose I should do a full compression check and see where the motors at. Did GM run nylon coated gears in these like Mopar did? It's got great oil pressure.....but if the compression is too low.....no point in going any further for now.

Don't know about Chevy but Pontiac was using plastic coated timing gears in the late 60's. Those Pontiac engines were notorious for the plastic breaking off and plugging the oil pump pickup screen, oil starving the bottom end and destroying the engine.