TREMEC TKX 5-Speed Package | 1968-1972 Nova | Chevy Small Block

TREMEC TKX 5-Speed Package | 1968-1972 Nova | Chevy Small Block

TREMEC TKX 5-Speed Package | 1968-1972 Nova | Chevy Small Block

Description

Key Features

  • 600 lb-ft torque capacity with 8,000 RPM capability and 7,500 RPM shift capability
  • 26-spline input shaft with 31-spline output shaft for added strength
  • End-loading case design for superior tunnel clearance and case strength -- fits most '68-'72 Novas without major tunnel modifications
  • Compact 99 lb dry weight with 2.7-quart fluid capacity
  • Bolts directly to OEM GM four-speed bellhousings -- no adapter plates required
  • Multiple gear ratio configurations available: Wide ratio (3.27, 1.98, 1.34, 1.00, 0.72) and close ratio options (2.87 first gear)
  • All gears and shafts made from ASTM 4615 special-grade steel for increased torque capacity
  • Sintered carbon/bronze hybrid triple-cone synchronizers with non-leading tooth profile for crisp 7,500 RPM shifts
  • High-performance short-throw billet aluminum shifter with road noise isolation
  • Tapered roller bearings on input, output, and countershafts reduce noise; caged needle bearings on mainshaft
  • 31-spline output uses Ford C6-style slip yokes for wide driveline component availability
  • Built-in reverse light switch and cruise control safety switch

Description

Your 1968-1972 Nova deserves more than a rebuild of that tired Muncie or Saginaw four-speed. TREMEC specifically designed the TKX case to fit within the narrow confines of vintage GM tunnels -- and that engineering translates perfectly to your X-body Nova. This is not just another transmission swap; it is a complete drivetrain evolution that delivers modern performance without sacrificing the classic feel your Nova was built for.

The TKX's end-loading design provides a slimmer case profile for superior tunnel clearance while delivering increased case strength and fewer potential leak points. Enhanced gear sizes and revised double-lined carbon-fiber synchronizer packages enable safe 7,500 RPM shifts while eliminating the notchy, stiff shifter feel of older transmissions. Tapered roller bearings on the input, output, and countershafts reduce noise, while caged needle bearings on the mainshaft optimize performance and longevity. Every gear engagement is crisp, every shift deliberate.

This is not a one-size-fits-all kit. MDL's customizable package system lets you select exactly what your Nova needs -- from hydraulic clutch systems and custom crossmembers to speedometer conversions and shift knobs. Whether you are building a numbers-matching restoration with modern reliability or a full-blown restomod, every component is selected for quality and compatibility with your Chevy small block application. The 31-spline output shaft uses Ford C6-style slip yokes, ensuring you can source quality driveline components for years to come.

All TREMEC TKX transmissions are built with 100% brand-new OEM-quality components and include MDL's concierge service to help you select the right configuration for your project and budget. Made in the USA with lifetime technical support from the drivetrain experts at Modern Driveline.

What's Included

This is a fully customizable package. Components available for selection include:

  • TREMEC TKX Transmission: Multiple gear ratio options (wide or close ratio) with 600 lb-ft torque capacity
  • Custom Shifters: MDL offset shifters for factory four-speed positioning
  • Bellhousings: Aluminum and steel scatter shield options with block plates
  • Installation Hardware: Complete fastener kits in aluminum or steel
  • Flywheels: Multiple weight and balance configurations for 168-tooth applications
  • Clutch Sets: Single and twin-disc options for hydraulic release systems
  • Hydraulic Systems: Complete master cylinder kits with lines and hydraulic release bearings
  • Pedal Assemblies: Clutch pedal and pedal pad kits
  • Crossmembers: Custom-engineered Nova transmission crossmember
  • Driveline Components: 31-spline slip yokes in 1310, 1330, and 1350 series
  • Speedometer Components: Mechanical cable adapters, driven gears, and electronic sensors
  • Shift Components: Shift knobs, boots, levers, and thread adapters
  • Transmission Fluid: TREMEC High Performance MTF or ATF options
  • Wiring Harnesses: Reverse light integration harness
  • Technical Support: Lifetime phone and email assistance from MDL's drivetrain specialists
Subtotal 0.00 0 selected
Final step

Review your build

Make sure everything looks right. Click Edit on any row to change a choice.

Package total 0.00