TREMEC TCET17805 TKX 5-Speed Manual Transmission GM Mount

The TREMEC TCET17805 TKX 5-Speed Manual Transmission GM Mount is a high-performance rear-wheel-drive manual transmission designed specifically for GM-powered muscle cars, hot rods, trucks, and restomod projects. Featuring a 2.87:1 first gear and a 0.68 overdrive, this TKX model delivers strong off-the-line acceleration while significantly reducing engine RPM during highway cruising. Its compact, end-loaded design allows it to fit most classic GM transmission tunnels with little or no modification, making it an ideal upgrade for vintage performance vehicles.

Built to withstand 600 lb-ft of torque, the TCET17805 features a durable three-piece aluminum case, high-strength alloy steel gears, and advanced multi-cone synchronizers with hybrid bronze/carbon friction rings for smooth, precise shifts up to 7,500 RPM. With mechanical and electronic speedometer outputs, three selectable shifter positions, and a GM mounting pattern, this transmission offers outstanding performance, reliability, and installation flexibility.

Features

• Genuine TREMEC TCET17805 TKX 5-Speed Manual Transmission
• Designed for GM rear-wheel-drive applications
• Wide-ratio gearing with 2.87:1 first gear
• 0.68 overdrive for lower cruising RPM
• Rated for 600 lb-ft of torque
• Smooth high-RPM shifting up to 7,500 RPM
• Maximum engine speed of 8,000 RPM
• Compact end-loaded design for improved tunnel clearance
• Heavy-duty three-piece aluminum housing
• Multi-cone synchronizers with hybrid bronze/carbon friction rings
• High-strength alloy steel gears and shafts
• Three selectable shifter mounting locations
• Mechanical and electronic speedometer outputs
• Reverse light switch and neutral safety switch provisions
• GM mounting pattern

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
• Reverse: 2.56:1

Specifications

• Brand: TREMEC
• Manufacturer Part Number: TCET17805
• Model: TKX
• Transmission Type: 5-Speed Manual
• Drive Type: Rear-Wheel Drive
• Application: GM
• Torque Capacity: 600 lb-ft
• Maximum Engine RPM: 8,000 RPM
• Recommended Shift RPM: 7,500 RPM
• Case Material: Aluminum
• Dry Weight: Approximately 99 lbs
• Input Shaft Diameter: 1.125 inches
• Input Shaft Spline Count: 26
• Output Shaft Diameter: 1.375 inches
• Output Shaft Spline Count: 31
• Speedometer Output: Mechanical and Electronic
• Shifter Positions: Three
• Release Type: Mechanical
• Fluid Capacity: 2.7 Quarts
• Recommended Fluid: TREMEC High Performance Manual Transmission Fluid
• Bellhousing Included: No
• Shifter Included: Rear Stub Shifter
• Slip Yoke Included: No

Package Includes

• TREMEC TCET17805 TKX 5-Speed Manual Transmission
• Rear Stub Shifter
• Reverse Light Switch
• Neutral Safety Switch
• Installation Hardware
• Manufacturer Documentation

Bellhousing, clutch kit, flywheel, transmission mount, crossmember, slip yoke, and driveshaft are sold separately unless otherwise specified.

Recommended Applications

Ideal for:

• Chevrolet Camaro
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet El Camino
• Chevrolet C10 Pickup
• Chevrolet Bel Air
• Chevrolet Impala
• Chevrolet Corvette
• Pontiac GTO
• Pontiac Firebird
• Oldsmobile Cutlass
• Buick Skylark
• Street Rods
• Restomod Projects
• Pro-Touring Builds
• High-Performance Street Cars

Compatible with most GM V8 applications when paired with the appropriate bellhousing, clutch, and installation components.

Installation Requirements

Installation may require:

• GM-compatible bellhousing
• 26-spline clutch disc
• 31-spline slip yoke
• Transmission crossmember
• Transmission mount
• Driveshaft modification depending on vehicle
• Clutch linkage or hydraulic clutch conversion
• TREMEC High Performance Manual Transmission Fluid

Professional installation is recommended to ensure proper bellhousing alignment, drivetrain geometry, and optimal transmission performance.

Warranty

The TREMEC TCET17805 TKX 5-Speed Manual Transmission GM Mount is backed by a 1-Year Limited Warranty, covering defects in materials and workmanship under normal use and proper installation.

Why Choose the TREMEC TCET17805 TKX?

The TREMEC TCET17805 TKX is the ideal 5-speed upgrade for classic GM vehicles requiring modern strength, smooth shifting, and exceptional drivability. With a 600 lb-ft torque rating, 2.87 first gear, 0.68 overdrive, compact installation-friendly design, and premium internal components, it delivers outstanding acceleration, reduced highway engine speeds, and long-term durability. Whether you’re building a pro-touring car, restomod, or high-performance street machine, the TCET17805 provides the reliability and performance expected from TREMEC’s industry-leading manual transmissions.