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Powerglide Transmissions
The Powerglide remains one of the most trusted and effective drag racing transmissions ever built. This classic two-speed automatic delivers unmatched simplicity, consistency,...
The Powerglide remains one of the most trusted and effective drag racing transmissions ever built. This classic two-speed automatic delivers unmatched simplicity, consistency, and power transfer at the strip.
Whether you’re running a lightweight bracket car or a high-horsepower doorslammer, the 2 speed Powerglide continues to dominate because it only shifts once. That single shift means fewer opportunities to lose traction, with less parasitic drag and more of your engine’s power reaching the tires.
Aftermarket Transmission Cases for Maximum Strength
Stock cases quickly find their limits under the elevated line pressure...
The Powerglide remains one of the most trusted and effective drag racing transmissions ever built. This classic two-speed automatic delivers unmatched simplicity, consistency, and power transfer at the strip.
Whether you’re running a lightweight bracket car or a high-horsepower doorslammer, the 2 speed Powerglide continues to dominate because it only shifts once. That single shift means fewer opportunities to lose traction, with less parasitic drag and more of your engine’s power reaching the tires.
Aftermarket Transmission Cases for Maximum Strength
Stock cases quickly find their limits under the elevated line pressure and high horsepower produced by high-performance drag racing vehicles. Aftermarket Powerglide cases are typically cast from high-strength aluminum (such as 356T6), and feature increased wall thickness in critical areas, which eliminates the flex and cracking common in OE cases. Most aftermarket transmission cases are SFI 4.1 certified, and bellhousings are SFI 30.1 certified with an internal steel safety liner. This eliminates the need for external transmission shields while providing superior rigidity, cooler operating temperatures, and improved component life.
Choosing the Right Gear Set
Performance Powerglides are available with two primary first-gear ratios:
1.76 ratio: This stronger, heavy-duty gear set is preferred for higher horsepower, lightweight drag racing applications. These sets feature a more robust carrier and larger components.
1.82 ratio: This is a lighter option, preferred for lower-power or weight-sensitive builds where reduced rotating mass is prioritized.
Both ratios deliver a true 1:1 second gear, giving the 2-speed Powerglide its characteristic efficiency and consistency down the track. Aftermarket options from Hughes Performance, TCI, FTI, and others expand the available ratio options even further.
TH350/TH400 Input Shaft Options
Stock Powerglide input shafts use a 17-spline design. For greater strength and broader converter compatibility, most race-built units upgrade to a TH350/TH400-style (turbo) 30-spline input shaft.
This popular upgrade allows the use of stronger, more readily available TH350 and TH400 torque converters while providing a larger diameter shaft with increased spline contact area. High-performance versions are available in materials such as 4340, 300M, and Vasco for extreme-horsepower applications.
Forward and Reverse Shift Patterns
Race Powerglides are commonly built with full-manual valve bodies available in both forward and reverse shift patterns. This flexibility lets builders match the transmission to the preferred shifter and driving style while delivering crisp, consistent shifts under race conditions.
Race-Proven Durability
When properly built, the Powerglide is renowned for exceptional racing durability. Leading manufacturers such as TCI, FTI Performance, Hughes Performance, ATI, and others produce units capable of handling well over 1,000 horsepower, with high-end Pro Mod and SuperGlide-style builds rated for 2,000–3,000+ horsepower.
Key Advantages of Choosing a Race-Prepped Powerglide Transmission:
Extreme simplicity: fewer parts mean fewer failure points
Outstanding consistency from a single shift
Low internal drag that puts more horsepower to the ground
Extensive aftermarket support for every component
SFI-rated cases and components for safety and sanctioning-body compliance
From reliable bracket-race units to full-billet, high-horsepower competition transmissions, the Powerglide is the gold standard for serious drag racers who value consistency, durability, and performance.
Looking for a reliable 2-speed Powerglide, a proven drag racing transmission, or a high-performance two-speed automatic? Summit Racing is your source for the brands built to win! Shop brands like TCI, FTI Performance, Hughes Performance, ATI, and more—always backed by the best service and everyday low prices.
Automatic Transmission, 2-Speed, 1.80 in. Planetary Gear Ratio, Forward Shift Pattern, Full Manual Valve Body, GM, Powerglide, Each
Part Number: FTI-PPG3
Estimated Ship Date: Today
Estimated Ship Date: Today
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Part Number: FTI-PPG4
Estimated Ship Date: Nov 16, 2026 if ordered today
Estimated Ship Date: Nov 16, 2026 if ordered today
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