Isky Cams Piston Notching Tool Pilot 5/16" Diameter 2010293 Shoulders adjust from 15" to

Shoulders adjust from 15" to 40" and lap belt adjusts from 22" to 60"

500" Rectangle Port

1984-1991 GMC C3500

Carb recommendations: Edelbrock Thunder Series AVS or Performer Series 650-800 cfm

Be Sure to check out all of our products from Holley Performance including Holley Carburetor Main Bodies

Isky Cams Piston Notching Tool Pilot 5/16" Diameter 2010293 Shoulders adjust from 15" toProduct Description: Pilot Piston Notching Tool 5 16 in Diameter Sold Individually As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of camshaft and valve train design. These tests are conducted daily in Isky's new enlarged dyno facility. To properly evaluate and prove the efficiency of Isky racing cams and valve train components, Isky maintains a continuous