Chevy BBC 454 Billet Aluminum Short Water Pump Swp 2 Groove Water Pump Pulley also known as the GM

also known as the GM 8

They will allow for the use of reverse-style transmission valve bodies or switching from a 3-speed to a 4-speed

Built for performance

Speedmasterª EFI systems give you everything you need to add powerful and efficient fuel injection to your vehicle

They will allow easy access to the torque converter area

Chevy BBC 454 Billet Aluminum Short Water Pump Swp 2 Groove Water Pump Pulley also known as the GMTthese Speedmaster aluminum water pump pulleys. These water pump pulleys are made from a 356 aluminum alloy that is heat treated to T 6 specs, and come in machined or polished finishes to suit your application needs.