<b>Description:</b></p>--Designed for BBC short water pump, fits 1955-68 small block Chevy's with a short water pump</p>--High quality polished aluminum finish</p>--Single belt groove</p>--The diameter of the pulley is 6.60"inch with a bolt circle of 1.75 inch. </p>--5/8" piolt hole</p>--6-5/8" Diameter</p>--3" Height</p>--1-3/4" Bolt Pattern</p>--Great for steet rods
