Description: 

Surface finish: Black Aluminum

Made from high quality billet aluminum

Pulley Diameter: 6 9/16"

Pulley Height: 1 3/8"

Bolt Pattern: 2 3/4" 

Center Hole: 1 1/8"

Fits:

Fits all SB Chevy engines when using a SHORT WATER PUMP

SB Chevy 265 283 305 327 350 383 400 Using a short water pump

P   Professional Installation is Highly Recommended (No Instruction and Wiring Diagram Included)