Mustang Ford Racing Crankshaft Pulley Spacer 4-Bolt .950" Thick 302/351W
Part Number: M-8510-B351
Ford Racing 4-Bolt .950" Thick Crankshaft Pulley Spacer for 302/351W Engines.
Use this crank pulley spacer with Ford Racing crank dampers M6316C351, M6316A50 or M6316D302 to achieve proper belt alignment on 302 and 351W Windsor engines.
1979 and earlier 351W with 0.917 Ford Racing crank sprocket can use spacer M-8510-A351 if 0.070 is machined from the rear of the damper hub. Early 3-bolt crank pulleys generally bolt directly to the damper (damper is drilled for 3- and 4-bolt patterns). However, sheave alignment should be checked and the pulley shimmed as necessary to correct any misalignment.