Timing marks on an '81 SC pulley
 

I've searched the forums up the wazoo but can't find any picture that labels the timing marks on an 81 SC pulley. Found them for every other motor, but not mine!

Is there one that labels, or an easy way to tell which ones are which?

Thanks.

Hm, you should have 4 marks, three are 120 degrees apart, and one for BTDC. A hash mark will do.

On my '80 US SC, the marks were for TDC, 5 degs BTDC, and (I believe) 30 degs BTDC (as well as the 120 deg markers mentioned above)

hth