MDL TREMEC GM TKX 5-Speed | 3.27 First, 0.72 OD | 2” Left Side Shift Rear, 1” left, .65” or 1.15” Forward Offset

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) - 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
• MDL side shift rear modification with a 1” Left, .65” or 1.15” forward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 3” left of center line, 15.60” or 16.10” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

When your classic GM muscle car needs the reliability of a modern 5-speed without sacrificing the classic 4-speed driving experience, the TREMEC TKX delivers a purpose-built solution designed specifically for easy retrofits into classic muscle cars and trucks. Unlike other transmissions adapted from OEM applications, the TKX was engineered from the ground up for the aftermarket, solving the tunnel clearance and shift quality problems that have plagued gear swappers for decades.

TREMEC designed the TKX case specifically to fit within the narrow and short confines of '68-'72 Chevelle tunnels -- meaning it fits GM A-bodies (Chevelle, GTO, Cutlass, Nova, Camaro) without tunnel modifications. The three-piece aluminum housing with increased case strength provides outstanding structural stiffness, while the updated gears are machined from ASTM 4615 steel alloy -- the same high-grade material used in Magnum six-speed gears. Enhanced gear sizes and revised carbon-fiber synchronizers deliver clean shifts up to 7,500 RPM, a massive improvement over the brass synchros that went notchy above 6,000 RPM in older transmissions.

This particular TKX variant features the wide-ratio gear set (3.27, 1.98, 1.34, 1.00, 0.72) with side shifter Rear socket position. The shifter offset places the stick 1" left, .65" or 1.15" forward of center at the 15"60" or 16.10" mounting location -- perfect for applications requiring a specific console or floor shifter alignment. The 31-spline output shaft uses Ford C6-style slip yokes, accepting 1330 U-joints for reliable driveline connections.

This GM-pattern TKX bolts directly to GM 3 and 4-speed Muncie or Richmond bellhousings using the same mounting pattern as your original 4-speed. With a dry weight of 99 lbs and 2.7-quart fluid capacity, it ships complete and ready for installation. Made in the USA with 100% brand-new OEM-quality components.

What's Included

• TREMEC TKX 5-speed transmission (TCET17805) with 3.27, 1.98, 1.34, 1.00, 0.72 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift rear, 1” left .65” or 1.15” forward 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