Powermaster Alternator Pulley - 2.8 Diameter SR71050H The only disadvantage to this

The only disadvantage to this design is the tendency to flex and bow under hard acceleration

especially compared to aluminum designs

Larger Black Powder Coated plenum

Type M Spin-On Adapter with 20 x 1

on any type of vehicle

Powermaster Alternator Pulley - 2.8 Diameter SR71050H The only disadvantage to thisAll V groove pulleys are deep groove to ensure belt retention at high RPMs Powermaster produces alternators and starters for both street rod and racing applications. They also offer related accessories, including brackets, wiring harnesses, pulleys, and drive kits. Powermaster Motorsports is the leader in high performance alternators and starters for auto racing. Product Description: Alternator Pulley V Belt 1 Groove 2. 8 in Diameter Aluminum Gray