According to http://www.buickperformanceclub.com/455pulleybrkts.htm, this 1-groove water pump pulley is for 1970 BB Buicks with short water pumps and no air conditioning. The v8 board member I purchased it from grit blasted and painted it satin black. I never did install it so it’s still in excellent condition (except for a couple tiny paint chips). $20 plus insured USPS Priority Mail shipping.
