TREMEC TKX 5-Speed Conversion Package | 1967 Pontiac Firebird

TREMEC TKX 5-Speed Conversion Package | 1967 Pontiac Firebird

TREMEC TKX 5-Speed Conversion Package | 1967 Pontiac Firebird

Description

Key Features

  • 600 lb-ft torque capacity with 7,500 RPM shift capability - handles serious Pontiac power
  • Compact end-loading case design - fits first-gen F-body tunnels without floor modifications
  • Multi-cone synchronizers with sintered bronze/carbon hybrid rings - smooth, crisp shifts at high RPM
  • 26-spline input shaft, 31-spline output shaft - built for strength and durability
  • Three-piece ribbed aluminum housing - maximum structural stiffness with reduced weight
  • Three shifter locations available - OEM 4-speed position maintained for stock appearance
  • Multiple gear ratio options - wide ratio (3.27:1 first) or close ratio (2.87:1 first)
  • Fully customizable package - select transmission, bellhousing, clutch, hydraulics, shifter, and crossmember
  • Lifetime technical support included

Description

Give your '67 Firebird the modern 5-speed performance it deserves without hacking up the tunnel. This complete TREMEC TKX conversion package solves the classic first-gen F-body problem: getting a high-capacity overdrive transmission into a notoriously tight transmission tunnel. The TKX's end-loading architecture creates the slimmest 5-speed case on the market, sliding into place where TKOs and T-5s couldn't fit without extensive floor work.

The TKX isn't just compact - it's seriously overbuilt. With 600 lb-ft of torque capacity and the ability to handle shifts at 7,500 RPM, this transmission won't flinch behind a built Pontiac V8. All gears and shafts are machined from ASTM 4615 special-grade steel for maximum torque-carrying capacity. The three-piece ribbed aluminum housing delivers outstanding structural stiffness while keeping dry weight to just 99 pounds. Multi-cone synchronizers with sintered bronze and carbon hybrid rings provide that modern, buttery shift feel that factory Muncie owners can only dream about.

MDL's guided package builder walks you through every component selection for your specific '67 Firebird application. Start with your choice of TKX gear ratios - wide ratio for street driving or close ratio for track work - then select the correct Pontiac bellhousing, clutch system, hydraulic release bearing, flywheel, shifter configuration, crossmember, and driveshaft yoke. Every part is engineered to work together as an integrated system, eliminating the guesswork and incompatibility headaches of piecing together a conversion from multiple vendors.

Whether you're converting from an automatic or upgrading from a tired 4-speed, this package delivers everything needed for a complete bolt-in installation that maintains your factory shift location and console compatibility. Made in the USA with lifetime technical support from the drivetrain experts at MDL.

What's Included

  • TREMEC TKX 5-speed transmission with billet aluminum short-throw shifter (gear ratio selection required)
  • Application-specific bellhousing (aluminum or steel options available)
  • Bellhousing hardware kit with grade 8 fasteners
  • Billet aluminum flywheel (balance and configuration options available)
  • Flywheel bolt kit (standard or ARP options)
  • Performance clutch kit with pressure plate, disc, and hardware
  • Pressure plate bolt kit (standard or ARP options)
  • Hydraulic clutch pedal assembly
  • Hydraulic master cylinder kit with reservoir and mounting hardware
  • Hydraulic release bearing system
  • Braided stainless hydraulic line with -4AN fittings
  • Custom shifter with position options
  • Shift lever (Hurst or custom options)
  • Shift knob and boot assembly
  • Transmission crossmember - bolt-in design for '67 Firebird
  • 31-spline slip yoke for driveshaft connection (U-joint size selection required)
  • Speedometer gear and cable adapter
  • Speedometer gear retaining clip
  • Reverse light wiring harness
  • TREMEC-approved transmission fluid (3 quarts)
  • Installation instructions and technical documentation
  • Lifetime technical support
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