Trans-Dapt V-Belt 1-Groove Crankshaft Pulley - 6.563 in Diameter - Machined Aluminum - Short Water Pump - Small Block Chevy AS05521 Pulley space #717656 may be

Pulley space #717656 may be required on some 1975-later engines

Not for use with most oils (see previous point for exceptions)

Utilizes up to 3 GPS satellites simultaneously and samples 10 times per second

Independent Compression & Rebound Double Adjustable (DD) or Ride Sensitive Non-Adjustable (ALN)

Electric fans require very little amperage and are suitable for use in race car or tow vehicle

Trans-Dapt V-Belt 1-Groove Crankshaft Pulley - 6.563 in Diameter - Machined Aluminum - Short Water Pump - Small Block Chevy AS05521 Pulley space #717656 may beTrans Dapt Performance Crankshaft Pulley, 1 Groove, Chevrolet 283 350, Short Water Pump Machined Aluminum Trans Dapt Crankshaft Pulley 9480 6. 6 in. Diameter Single Groove Short Style Machined Aluminum Crankshaft Pulley Vehicle Applications: 1957 1968 Chevrolet Corvette 1958 1968 Chevrolet Biscayne 1959 1968 Chevrolet El Camino 1960 1968 Chevrolet C20 Pickup 1957 1957 Chevrolet One Fifty Series 1957 1957 Chevrolet Two Ten Series 1957 1958 Chevrolet