TREMEC TKX 5-Speed Conversion Package | Chevy Small Block & Big Block

TREMEC TKX 5-Speed Conversion Package | Chevy Small Block & Big Block

TREMEC TKX 5-Speed Conversion Package | Chevy Small Block & Big Block

Description

Key Features

  • 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
  • 26-spline input shaft, 31-spline output shaft for maximum strength
  • End-loading aluminum case design fits GM A-bodies without tunnel modifications
  • Bolts directly to GM 3- and 4-speed Muncie/Richmond bellhousing pattern
  • Three gear ratio options: wide (3.27, 1.98, 1.34, 1.00, 0.72) and close-ratio (2.87, 1.89, 1.28, 1.00, 0.81 or 0.68)
  • Three factory shifter locations with optional MDL offset shifters for custom positioning
  • Ribbed 3-piece aluminum housing provides structural stiffness and reduced NVH
  • Hybrid sintered bronze/carbon triple-cone synchronizers for smooth high-RPM shifts
  • Complete customizable package - select every component for your specific build
  • 2.7-quart fluid capacity
  • 99 lbs dry weight

Description

Building a Chevy small-block or big-block powered machine that deserves a modern five-speed? This fully customizable TREMEC TKX package delivers everything you need to swap from an old Muncie, Saginaw, or automatic to a transmission engineered specifically for the aftermarket. With 600 lb-ft of torque capacity and the ability to shift at 7,500 RPM, the TKX handles everything from a warmed-over 350 to a serious big-block combination without breaking a sweat.

TREMEC designed the TKX from the ground up as an aftermarket transmission, not an adapted OEM unit. The compact end-loading case design eliminates the fitment headaches that plagued earlier five-speeds - the TKX drops into GM A-bodies like Chevelles, GTOs, Cutlasses, Novas, and Camaros without tunnel modifications. The slimmer profile provides superior tunnel clearance while the ribbed three-piece aluminum housing (main case, intermediate plate, and rear extension) delivers outstanding structural stiffness. All gears and shafts are machined from special-grade ASTM 4615 steel, with oversized gear widths and caged needle bearings in all gear positions for extreme durability.

Shift quality is where the TKX truly separates itself from predecessors. Multi-cone synchronizers paired with hybrid sintered bronze and carbon synchronizer rings deliver smooth, precise engagement even at high RPM. The internal three-rail shift system with steel shift forks and ball detents on each rail eliminates the notchy feel of older transmissions. The stock billet aluminum short-throw shifter isolates road noise while providing clean, crisp shifts - and MDL offers custom offset shifters for even more positioning flexibility.

This guided package system lets you configure the exact drivetrain solution for your Chevy project. Select from multiple TKX gear ratio configurations, choose your bellhousing material and style, pick the clutch combination for your torque requirements, and specify your hydraulic actuation system. The TKX bolts directly to the same pattern as GM 3- and 4-speed Muncie bellhousings, making this a straightforward upgrade path. Every component is hand-selected for compatibility and backed by MDL's technical expertise.

Package Components Available

  • Transmissions: TREMEC TKX units in wide-ratio (3.27 first, 0.72 overdrive) or close-ratio (2.87 first, 0.81 or 0.68 overdrive) configurations
  • Bellhousings: Aluminum and steel options for Chevy small-block and big-block applications
  • Hardware Kits: Complete bellhousing-to-transmission mounting hardware in aluminum or steel
  • Flywheels: Steel and lightweight billet options for 168-tooth applications - various crankshaft configurations including 383/400 external balance, 454, 502, and LS1 5.7L
  • Flywheel Bolts: ARP-quality fasteners
  • Clutch Sets: Multiple clutch kits with hydraulic actuation compatibility from leading manufacturers
  • Pressure Plate Bolts: Standard and ARP upgrade options
  • Hydraulic Master Cylinder Kits: Complete clutch actuation systems
  • Transmission Mounts: Crossmember and mounting solutions
  • Shift Components: Shift knobs (multiple styles and colors), thread adapters, custom offset levers, Hurst levers, and shift boots
  • Speedometer Components: Cable adapters, driven gears (16-21 tooth options), gear clips, and electronic speed sensors
  • Wiring Harnesses: Reverse light integration harness
  • Transmission Fluid: TREMEC HP-MTF or Dexron-III ATF (2.7-quart capacity)
  • Driveshaft Components: 31-spline slip yokes in 1310, 1330, and 1350 U-joint series
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