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V · 02-02-2012, 10:32 PM

well i bought a March performance "outward mount" pulley kit for my LT1. when i bolted it all up, the pulley was almost an inch off in alignment to the belt with everything else. i called March and thats who told me about the B body hubs being different and that the could machine the pulley they sent if i provided exact measurements for them. I never did anything about it.

Also about those other 3 holes, here are 2 LS1 pulleys which are just held on by the center bolt. They both have 3 threaded holes in them as well.

edit: those 3 holes are also used for removal from the crank. The puller bolts thread into them.

02-02-2012, 10:32 PM	#23
V Stalker Join Date: Aug 2004 Posts: 12,082 iTrader: (12)	well i bought a March performance "outward mount" pulley kit for my LT1. when i bolted it all up, the pulley was almost an inch off in alignment to the belt with everything else. i called March and thats who told me about the B body hubs being different and that the could machine the pulley they sent if i provided exact measurements for them. I never did anything about it. Also about those other 3 holes, here are 2 LS1 pulleys which are just held on by the center bolt. They both have 3 threaded holes in them as well. edit: those 3 holes are also used for removal from the crank. The puller bolts thread into them. Last edited by V; 02-02-2012 at 10:34 PM.