Chevy SBC 350 Single Idler Noisey Timing Gear Drive & Aluminum Timing Cover Set Speedmaster water pumps have a

Speedmaster water pumps have a bigger impeller and larger cavity size to flow 40 percent more coolant than stock

Nitrous/injector bosses

1966-83 trucks and Suburbans

It is effective at any rpm level or load

These Speedmaster aluminum water pump pulleys are made from a 356 aluminum-alloy that is heat-treated to T-6 specs

Chevy SBC 350 Single Idler Noisey Timing Gear Drive & Aluminum Timing Cover Set Speedmaster water pumps have aSpeedmaster gear drives are great for you folks who want better timing. Their single idler design has CNC machined components and they are easy to install. Minor machining may be required on some applications. Must be installed by experienced professional, this unit will not include instructions.