I posted this in Tech 2001 but no replies yet. What should the endplay be on a stock Chevy HEI distributor? If endplay is too high, ignition timing can move around too much, right? Endplay on mine is around .080, sure seems like a lot.

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Mike Newby

69 Chevelle 355/TH200-4R
97 Grand Prix GTP
64 Chevy C10 Pickup

I'd be looking for around .015. Use distributor shims P/N 1837617.

My bag (of shims) is old and wrinkly, that is the "best guess" of the part number. I guess I'll have to try to buy more to verify the number!

[This message has been edited by Schurkey (edited 05-29-2001).]

Check out this link to an old thread...
http://www.chevelles.com/forum/Forum9/HTML/004430.html

It should answer your question.

Thanks guys!