The air pump in my 87 NA is long gone. I need a little more power out of the alt and under driving it isn’t helping. Does anyone make a dual alt pulley that isn’t under driven?

Also, do I truly need a dual pulley? Would a single pulley work? (Have I high output alt that my current pulley is a touch small to fit on.)

 

It's just so there is another contact point on the waterpump.

Re-Speed sells one.

http://mrcmfg.com/catalog/product_in...roducts_id=393