If you have the room between the fan and radiator, a fan Spacer is an option. I have 2 groove balancer on mine and that's what the PO did. Go to Summit racing or search fan spacers, they make these in various depths

My fan pully broke and who knows if the spacer is to blame or not.

Last edited by 57_StepSide; 01/15/2010 3:51 AM. Reason: add a sentance
Eric
http://s1199.photobucket.com/user/sparky234/library/My%2057%20Chevy%20Stepside?sort=3&page=1
'57 Chevy 3100 (Little Red)
'81 RD350 LC - Fun, Fun, Fun
'83 GS1100E - Pocket Rocket