TKX 5-Speed Manual Transmission for Ford 302/351W Windsor

The TREMEC TKX 5-Speed Manual Transmission for Ford 302/351W Windsor is a premium performance transmission package designed for Small Block Ford 289, 302, 347 Stroker, 351 Windsor, and 351 Cleveland engines. Engineered for classic Mustangs, Falcons, Fairlanes, Broncos, F-Series trucks, street rods, and pro-touring builds, the TKX delivers exceptional strength, smooth shifting, and modern overdrive performance in a compact package.

Built with 100% brand-new OEM-quality components, the TREMEC TKX is rated to handle 600 lb-ft of torque while providing crisp, reliable shifts at engine speeds up to 7,500 RPM. Its redesigned aluminum case offers improved transmission tunnel clearance compared to previous TKO models, making installation easier in classic Ford vehicles. The overdrive fifth gear lowers cruising RPM for improved fuel economy, reduced engine wear, and a quieter driving experience.

Designed for both street and performance applications, this transmission is an excellent upgrade for restorations, restomods, drag-and-drive builds, and pro-touring projects requiring modern manual transmission performance.

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Features

• Genuine TREMEC TKX 5-Speed Manual Transmission
• Designed for Ford 289, 302, 347 Stroker, 351 Windsor, and 351 Cleveland engines
• Rated for 600 lb-ft of torque
• Smooth shifting up to 7,500 RPM
• Supports engine speeds up to 8,000 RPM
• Lightweight aluminum case
• Compact design for improved transmission tunnel clearance
• Fully synchronized forward gears
• Hybrid carbon and bronze synchronizer technology
• High-strength gears and shafts
• Overdrive fifth gear for lower highway RPM
• Multiple shifter mounting positions
• Ideal for muscle cars, hot rods, classic trucks, and pro-touring builds

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Gear Ratios

• 1st Gear: 2.87:1
• 2nd Gear: 1.89:1
• 3rd Gear: 1.28:1
• 4th Gear: 1.00:1
• 5th Gear: 0.68:1 or 0.81:1 (model dependent)
• Reverse: 2.56:1

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Specifications

• Brand: TREMEC
• Model: TKX
• Transmission Type: 5-Speed Manual
• Engine Compatibility: Ford 289, 302, 347, 351W, 351C
• Torque Capacity: 600 lb-ft
• Maximum Engine Speed: 8,000 RPM
• Shift Capability: 7,500 RPM
• Case Material: Aluminum
• Approximate Dry Weight: 99 lbs
• Input Shaft Diameter: 1.0625 inches
• Input Shaft Spline Count: 10
• Output Shaft Diameter: 1.375 inches
• Output Shaft Spline Count: 31
• Shifter Included: Yes
• Bellhousing Included: No
• Flywheel Included: No
• Clutch Included: No
• Yoke Included: No
• Speedometer Output: Mechanical and Electronic
• Fluid Capacity: Approximately 2.7 Quarts

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Recommended Applications

Ideal for:

• Ford Mustang
• Ford Falcon
• Ford Fairlane
• Ford Torino
• Ford Maverick
• Ford Ranchero
• Ford Bronco
• Ford F-100
• Street Rods
• Pro-Touring Builds
• Classic Muscle Cars
• Custom Hot Rods

Compatible with Small Block Ford 289, 302, 347 Stroker, 351 Windsor, and 351 Cleveland engines when used with the appropriate bellhousing, flywheel, and clutch components.

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Installation Requirements

Installation may require:

• Ford-compatible bellhousing
• Performance clutch kit
• Flywheel (28 oz or 50 oz external balance, depending on engine)
• Pilot bearing
• Transmission mount
• Crossmember
• 31-spline slip yoke
• Driveshaft modifications (depending on vehicle)
• Hydraulic or mechanical clutch linkage
• Manual transmission fluid

Professional installation is recommended to ensure proper drivetrain alignment and long-term reliability.

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Package Includes

• TREMEC TKX 5-Speed Manual Transmission
• Short-Throw Shifter Assembly
• Shift Rail Plugs
• Reverse Light Switch
• Inspection Cover
• Manufacturer Documentation

Additional installation components such as the bellhousing, clutch assembly, flywheel, crossmember, and driveshaft are sold separately unless included in a complete conversion kit.

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Warranty

The TREMEC TKX 5-Speed Manual Transmission for Ford 302/351W Windsor is backed by a 1-Year Limited Warranty, covering defects in materials and workmanship under normal use and proper installation.