TREMEC TKX 5-Speed Transmission | GM | 2.87 First Gear | 0.68 Overdrive

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Gearing ratio (2.87, 1.89, 1.28, 1.00, 0.68) - deep overdrive drops highway RPM for improved cruising
• 26-spline input shaft (1-1/8 in. diameter) and 31-spline output shaft for added strength
• Compact end-loaded aluminum case fits most GM tunnels without floor modifications
• Ribbed 3-piece housing (main case, intermediate plate, rear extension) for structural stiffness
• Multi-cone synchronizers with sintered carbon/bronze hybrid rings for smooth high-RPM shifts
• ASTM 4615 special-grade steel gears and shafts with caged needle bearings in all gear positions
• GM Muncie bellhousing bolt pattern - direct swap for 3-speed and 4-speed applications
• GM 0.590-inch pilot tip with 1.375-inch OD throwout bearing guide tube
• Built-in reverse light switch and cruise control safety switch
• Dual speedometer outputs: mechanical 7-tooth Ford gear (adaptable to GM) plus OSS two-wire analog sensor
• 99 lbs dry weight; 2.7-quart fluid capacity
• High-performance short-throw billet aluminum shifter included
• Shifter Stub Location: center line, 19.52” back from the bellhousing face

Description

When you need serious torque capacity and crisp shifts in a package that fits classic GM muscle cars without floor surgery, the TREMEC TKX delivers. This all-new 5-speed was designed, tested, and built specifically for the aftermarket - not adapted from OEM production. The result is a transmission purpose-built for Chevelles, GTOs, Cutlasses, Novas, Camaros, and other GM A-bodies with a compact, end-loaded case design that clears most factory transmission tunnels without modifications.

The TCET17805 gear set pairs a 2.87 first gear for strong, manageable launches with a deep 0.68 overdrive that significantly reduces highway RPM for improved fuel economy and reduced engine wear. All gears and shafts are manufactured from ASTM 4615 special grade steel, while the robust internal three-rail shift system with steel shift forks ensures precise engagement through all five gears. Superior shift-ability comes from multi-cone synchronizers and hybrid synchronizer rings made of sintered bronze and carbon, allowing confident shifts at engine speeds up to 7,500 RPM.

TREMEC engineers optimized the TKX's three-piece ribbed aluminum housing for structural stiffness while minimizing noise, vibration, and harshness. Tapered roller bearings on the input, output, and counter shafts reduce noise and improve durability, while caged needle bearings support all gear positions to reduce end play. Oversized gear widths increase gear life and torque capacity, and gaskets at all flanges eliminate fluid leaks and simplify installation.

The TKX bolts directly to standard GM Muncie bellhousings, making it a direct replacement for 3-speed and 4-speed Muncie transmissions. The 26-spline input shaft requires a matching clutch disc, while the 31-spline output shaft provides increased strength for high-torque applications. Includes a high-performance short-throw billet aluminum shifter that isolates road noise while delivering clean, crisp shifts. Like all TREMEC aftermarket transmissions, the TKX is made from 100% brand-new OEM-quality components. When purchased as part of an MDL complete conversion package, you receive an extended manufacturer warranty plus lifetime technical support.

Kit Includes

• TREMEC TKX 5-speed transmission (TCET17722) with 2.87/1.89/1.28/1.00/0.68 gear ratios
• High-performance short-throw billet aluminum shifter
• Gaskets for all mating surfaces
• Built-in reverse light switch (left side)
• Built-in cruise control safety switch (right side)
• Mechanical speedometer drive gear (7-tooth Ford pattern, adaptable to GM)
• OSS two-wire analog speedometer sensor
• MDL extended warranty: manufacturer warranty plus 1 additional year with 1-year grace period
• Lifetime technical support