Richmond Gear 1304000070 Super T-10 4-Speed Transmission, GM 2.43

The Richmond Gear 1304000070 Super T-10 4-Speed Transmission is a legendary performance manual transmission designed for GM rear-wheel-drive vehicles. Featuring a 2.43:1 first gear ratio, this close-ratio transmission delivers quick acceleration, crisp gear changes, and outstanding durability for street performance, drag racing, autocross, and road course applications.

Built with a lightweight aluminum case and precision-machined, heat-treated gears, the Super T-10 is synchronized in all forward gears with constant-mesh first and reverse gears to reduce gear clash and improve shift quality. Weighing approximately 70 lbs. dry, it combines strength with reduced vehicle weight while maintaining excellent reliability. Designed to handle up to 375 lb-ft of torque, the Super T-10 has earned its reputation as a favorite among muscle car enthusiasts and racers.

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Features

• Genuine Richmond Gear Super T-10 4-Speed Manual Transmission
• Manufacturer Part Number: 1304000070
• Designed for GM rear-wheel-drive applications
• Close-ratio 2.43:1 first gear
• Lightweight aluminum case
• Fully synchronized forward gears
• Constant-mesh first and reverse gears
• Strut-type synchronizers for smooth shifting
• Side-cover shift linkage design
• Heat-treated alloy steel gears
• Precision-machined internal components
• Ideal for street performance, drag racing, autocross, and restorations

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Gear Ratios

• 1st Gear: 2.43:1
• 2nd Gear: 1.61:1
• 3rd Gear: 1.23:1
• 4th Gear: 1.00:1
• Reverse: 2.35:1

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Specifications

• Brand: Richmond Gear
• Manufacturer Part Number: 1304000070
• Model: Super T-10
• Transmission Type: 4-Speed Manual
• Application: GM Rear-Wheel Drive
• Maximum Torque Capacity: 375 lb-ft
• Case Material: Aluminum
• Approximate Dry Weight: 70 lbs
• Input Shaft Diameter: 1.125 inches
• Input Shaft Spline Count: 26
• Output Shaft Diameter: 1.375 inches
• Output Shaft Spline Count: 32
• Tailshaft Length: 12 inches
• Bellhousing Included: No
• Shifter Included: No
• Slip Yoke Included: No
• Shifter Style: Side-Linkage
• Lubricant Capacity: Approximately 2.4 pints
• Recommended Gear Oil: GL-4 80W-90 Manual Transmission Oil

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Recommended Applications

Ideal for:

• Chevrolet Camaro
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet El Camino
• Chevrolet Corvette
• Chevrolet Impala
• Chevrolet Malibu
• Pontiac Firebird
• Pontiac GTO
• Oldsmobile Cutlass
• Buick Skylark
• Classic GM Muscle Cars
• Street Rods
• Drag Racing Vehicles

Compatible with most GM applications using the appropriate GM bellhousing and clutch components.

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Installation Requirements

Installation may require:

• GM-compatible bellhousing
• Performance clutch kit
• Flywheel
• Pilot bushing or bearing
• Transmission mount
• Crossmember
• 32-spline slip yoke
• Driveshaft modifications (depending on vehicle)
• Hurst or compatible side-linkage shifter
• GL-4 80W-90 manual transmission lubricant

Professional installation is recommended to ensure proper drivetrain alignment and reliable operation.

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Package Includes

• Richmond Gear Super T-10 4-Speed Transmission
• Front Bearing Retainer
• Side Cover Assembly
• Internal Shift Mechanism
• Reverse Light Switch
• Installation Documentation

Bellhousing, clutch assembly, flywheel, shifter, slip yoke, and transmission mount are sold separately unless included as part of a complete conversion package.

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Warranty

The Richmond Gear 1304000070 Super T-10 4-Speed Transmission is backed by a 1-Year Limited Warranty, covering defects in materials and workmanship under normal use and proper installation.