1.80 Alloy Gear Assembly Standard Length

The 1.80 Alloy Gear Assembly Standard Length from Transmission Specialties is a direct-fit planetary gear set engineered for Powerglide transmission upgrades. This straight-cut gear configuration delivers the performance gains serious transmission builders pursue when pushing beyond factory torque limits. The 1.80 ratio represents a significant overdrive reduction compared to stock gearing, enabling faster acceleration and improved launch characteristics while maintaining highway cruisability in modified powertrains.

Built from steel straight-cut gears rather than helical designs, this assembly minimizes backlash and delivers crisper power transfer—a critical advantage in high-horsepower applications where slop in the drivetrain translates directly to performance loss. At 23.14 lbs and dimensioned at 9.5 x 8 x 19 inches, the standard-length assembly integrates into Powerglide housings without modification. The alloy construction provides weight reduction compared to heavier planetary sets, benefiting overall vehicle dynamics and reducing rotational inertia during gear changes.

This gear set is purpose-built for street machines, bracket racers, and high-performance street rods where Powerglide transmissions remain the platform of choice. The 1.80 ratio works effectively in carbureted and fuel-injected builds alike, providing the aggressive acceleration needed in lighter vehicles while the straight-cut design ensures reliability under sustained boost or nitrous oxide applications. Installation requires proper transmission knowledge and tools; compatibility with your specific Powerglide variant and driveline setup should be verified before purchase.