SB Chevy double groove crankshaft pulley
Aluminum lower

•     Fits all sb Chevy engines when using a long water pump (if you need one for a short water pump we have them available in our ebay store)
•     Fits SB Chevy 265 283 305 327 350 383 400 using a long water pump
•     Pulley diameter is 6 9/16"
•     Pulley is 2 3/4" tall
•     Bolt pattern is 2 3/4" 
•     Center hole is 1 1/8"
•     Machined from billet aluminum
•     These feature deep grooves to prevent belts from slipping
•     We also have water pump & power steering pulleys in our ebay store!
•     Thanks!