MDL TREMEC GM TKX 5-Speed | 3.27 First, 0.72 OD | 2” Left Side Shift Front Shifter, 1” or 1.5” Backward Offset Stub

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Gearing Ratio (3.27, 1.98, 1.34, 1.00, 0.72) balances strong launches with relaxed highway 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
• MDL side shift modification with a 1” or 1.5” backward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 17.75” or 18.25” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Classic GM A-Body muscle cars deserve a modern five-speed overdrive, but TREMEC's factory shifter locations don't work with original console configurations. MDL solves this fitment problem with a precision in-house modification that repositions the shifter stub 1.0" or 1.5" backward, placing it exactly where your factory shifter sat. This isn't a bolt-on adapter or generic relocation kit - it's a carefully machined transmission modification that integrates new components directly into the TKX case, available only through MDL.

The base transmission is the TREMEC TCET18083 wide-ratio TKX, purpose-built for the aftermarket with 600 lb-ft torque capacity and 7,500 RPM shift capability. The wide-ratio gear set (3.27, 1.98, 1.34, 1.00, 0.72) delivers strong low-end acceleration while the 0.72 overdrive fifth gear drops engine RPM for highway cruising. The TKX features sintered carbon/bronze hybrid triple cone synchronizers with a non-leading tooth profile for crisp, high-RPM shifts without grinding or gear clash.

TREMEC engineered the TKX from the ground up as an aftermarket transmission with a compact, end-loaded design that clears most transmission tunnels without floor modifications. The ribbed three-piece aluminum housing provides structural stiffness while keeping weight down. All gears and shafts are made from ASTM 4615 special grade steel for maximum torque capacity, and tapered roller bearings on the input, output, and counter shafts reduce noise and improve durability. A single-piece countershaft design further increases strength.

This modified TKX fits Chevelle, GTO, LeMans, 442, Buick GS, and Malibu applications - specifically BOP vehicles being upgraded from 3 or 4-speed manual transmissions, or those with automatic or blank floor consoles. The GM-spec pilot tip (0.590") and 1.375" OD throwout bearing guide tube mate to GM close-pattern bellhousings. Uses Dexron III ATF with 2.7-quart capacity. Every modified TKX is hand-built at MDL's facility in Caldwell, Idaho, with lifetime technical support.

Kit Includes

• TREMEC TKX 5-speed transmission (TCET18083) with 3.27/1.98/1.34/1.00/0.72 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift front, 1” or 1.5” backward offset stub)
• 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