Butler Performance 8-Bolt to 11-Bolt Timing Cover Conversion Kit w/High Flow Water Pump, Pulley, Balancer, and Crank Pulley

Pontiac 11 Bolt Timing Cover Conversion Kit

Includes a Pontiac 350-455 1969-79 11-Bolt Timing Cover, FlowKooler High Volume Aluminum Water Pump, Billet Aluminum 2 Groove Pulley Black Anodized or Aluminum Finish, Water Pump Plate and Sleeves, Alignment Sleeves, and all the gaskets needed to complete the conversion.

This kit converts your 1965-1967 326, 1965-1966 389, & 1967-1968 350 and 400 8-bolt timing cover/water pump to the better cooling, more efficient, 11-bolt style. Comes with upper pulley needed for the high flow water pump to work with all your existing pulleys and brackets.

Includes 4 Bolt Performance Balancer with Timing tape that will require the included AC or NON AC crank pulley for the conversion

Will not work on 1963 and older that came with 4 bolt timing covers

Water Pump Fan Hub Working Height 4 1/2" Shaft Diameter 5/8"

Pulley is for 4.50" water pump, 6 1/2" Diameter (A/C Applications/ Smaller Dia for Extra Cooling)

Reproduction timing covers will Not Work with Tri-Power. See option for Dimpled Reconditioned Cover