TKX Five-Speed Package | Ford Truck FE Engine | 4WD with Divorced Transfer Case

TKX Five-Speed Package | Ford Truck FE Engine | 4WD with Divorced Transfer Case

TKX Five-Speed Package | Ford Truck FE Engine | 4WD with Divorced Transfer Case

Description

Key Features

  • 600 lb-ft torque capacity handles built FE engines (332, 352, 360, 390, 406, 427, 428)
  • Safe shifts at 7,500 RPM with double-lined carbon-fiber synchronizers
  • 26-spline input shaft and 31-spline output shaft for maximum strength
  • Multiple gear ratio configurations available (wide or close ratio)
  • Complete 4WD package with transfer case mounting bracket for divorced transfer case applications
  • FE-specific bellhousing options (standard or SFI-approved)
  • Front-shifted TKX recommended for best fit with bench seat configurations
  • Three-piece aluminum housing provides structural stiffness and compact profile
  • Note: Shift levers will be positioned nearly side-by-side in 4WD configuration

Description

Transform your FE-powered Ford 4WD truck with a fully customizable TREMEC TKX five-speed conversion that delivers modern performance without compromising off-road capability. This comprehensive package addresses the unique challenge of upgrading vintage Ford trucks equipped with FE big-block engines to a modern five-speed manual while retaining divorced transfer case 4WD functionality. The TKX's 600 lb-ft torque rating easily handles the output from built FE engines, while the single overdrive gear reduces highway RPM for better fuel economy and less drivetrain stress during long hauls or heavy towing.

The Ford FE engine family uses a unique round bellhousing bolt pattern that requires dedicated bellhousing solutions - this package provides FE-specific bellhousings in both standard and SFI-approved versions. The TKX features a high-performance short-throw billet aluminum shifter with an internal three-rail shift system and steel shift forks for precise, positive engagement. For 4WD applications, note that the transmission shifter and transfer case shifter will be positioned nearly side-by-side - a front-shifted TKX is recommended for trucks with bench seats to optimize ergonomics and clearance.

Enhanced gear sizes and revised double-lined, carbon-fiber synchronizer packages allow safe shifts at 7,500 RPM while eliminating the notchy feel common in older transmissions. Case mounting and rear crossmember locations remain the same as the TKO, simplifying installation for those upgrading from earlier TREMEC five-speeds. The compact, end-loaded design provides clearance in most transmission tunnels without extensive floor modifications - a significant advantage in vintage truck applications where tunnel space is often limited.

This fully configurable package system lets you select from multiple TKX gear ratio options, bellhousing choices, flywheel configurations (390 or 428 balance), hydraulic clutch systems with multiple master cylinder bore sizes, custom shift levers, and all supporting drivetrain components. Perfect for classic Ford F-Series trucks, Broncos, and vintage 4WD builds requiring FE power with modern transmission reliability.

Kit Includes

  • TREMEC TKX transmission (multiple gear ratio options available)
  • FE-pattern bellhousing (standard or SFI-approved versions)
  • TKX Ford startup hardware kit
  • 4WD transfer case mounting bracket
  • Billet steel flywheel options for 390 or 428 FE engines
  • ARP flywheel bolt set
  • Pressure plate bolt set (standard or ARP)
  • Pedal pads and trim rings (quantity 2)
  • Hydraulic master cylinder kit (multiple bore sizes and finishes available)
  • Hydraulic release bearing assembly
  • 30-inch hydraulic clutch line
  • Transmission crossmember
  • Transmission mount
  • Shift knob options (multiple styles and finishes)
  • Custom shift lever options
  • Leather shift boot
  • Speedometer driven gear (multiple tooth count options) with retaining clip
  • Electronic speedometer sensor option
  • Reverse light wiring harness
  • Transmission fluid (ATF or HP-MTF, 3 quarts)
  • 31-spline slip yoke (1310, 1330, or 1350 U-joint series)
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