Front Pump - GM PG Trans

The Front Pump – GM PG Trans from Transmission Specialties is a critical internal component engineered to restore reliable hydraulic pressure delivery in GM Powerglide transmissions. As a seasoned mechanic, you know that the front pump is the heart of any automatic transmission's lubrication and torque converter charge system; without a functional pump, even the best transmission rebuild will fail prematurely. This OEM-quality replacement is designed for builders and enthusiasts who demand durability when restoring vintage muscle cars, hot rods, or street machines powered by Powerglide units.

Built to Transmission Specialties' exacting standards, this front pump assembly ensures consistent flow rates and pressure regulation throughout the transmission's hydraulic circuit. The pump's internal gears and clearances are precision-machined to eliminate cavitation and maintain steady pressure under both idle and full-throttle conditions—essential for protecting clutch plates and preventing converter slip during hard acceleration. At 18.05 lbs and measuring 10.65 x 10.55 x 11.2 inches, it maintains the correct displacement and geometry to mate seamlessly with GM Powerglide bellhousing and crankshaft flanges without modification.

Whether you're rebuilding a second-generation Chevelle, a '67 Camaro, or a vintage Pontiac, this front pump is the go-to choice for restorers and performance shops. Installation requires proper alignment during transmission assembly and inspection of the input shaft seal pocket; failing to seat the pump correctly will result in loss of prime and catastrophic bearing wear. Pair this pump with quality ATF and a fresh transmission pan gasket for best results in any GM Powerglide restoration or upgrade project.