Correct size for 5% and where to buy, searched

something's not adding up, the number they sent me is for a 10% it could be that they are measuring it at a different place

stocker(89-93) is 3.135" so a 5% (8% 94-95) is 2.98" the number they sent me is lower, come on people, where are the SC freeks???






















help
 
Stock pulley for 89 sc should be 3.135 which is across the outside of the ribs, not including the belt. Stock 94 pulley is 3.275. 5% overdrive is typically calculated against the 89 pulley, so 5% overdrive pulley on a 94/95 car ends up being 10% overdrive give or take.

All overdrive pulleys are based off the 89 size.

3.135 @ 5% = 2.978
3.135 @ 10% = 2.822

This has been discussed here:
http://www.sccoa.com/forums/showthread.php?t=54113&highlight=pully+calculations
 
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