TREMEC TKX 5-Speed Conversion Package | 1962-1965 Chevy II Nova | LS Engine

TREMEC TKX 5-Speed Conversion Package | 1962-1965 Chevy II Nova | LS Engine

TREMEC TKX 5-Speed Conversion Package | 1962-1965 Chevy II Nova | LS Engine

Description

Key Features

  • 600 lb-ft torque capacity with 8,000 RPM capability and shifts at 7,500 RPM
  • End-loading design delivers the slimmest 5-speed case on the market for superior tunnel clearance
  • 26-spline input shaft with 31-spline output shaft for maximum drivetrain strength
  • Available in wide ratio (3.27:1 first gear, 0.72 overdrive) or close ratio (2.87:1 first gear, 0.68 or 0.81 overdrive)
  • Multi-cone synchronizers with sintered bronze and carbon hybrid rings for smooth high-RPM shifts
  • Three-piece ribbed aluminum housing provides outstanding structural stiffness
  • Bolts to GM Muncie bellhousing pattern - direct replacement for factory 3- and 4-speed transmissions
  • Fully configurable package includes transmission, bellhousing, clutch system, hydraulics, crossmember, and driveline components
  • Guided selection process matches components to your specific LS build and budget

Description

Swapping your '62-'65 Chevy II Nova to LS power with a modern manual transmission used to mean compromises - tunnel butchery, cobbled-together hydraulics, or settling for a transmission that couldn't handle real horsepower. This complete TREMEC TKX 5-speed package solves all of that. Built from the ground up as a purpose-designed aftermarket transmission, the TKX delivers 600 lb-ft of torque capacity with the slimmest case profile of any 5-speed on the market. That compact end-loading design was specifically engineered to fit tight GM A-body tunnels, minimizing modifications while maximizing strength and shift quality.

The TKX's internals are built for modern power levels and driving demands. All gears and shafts are machined from special-grade ASTM 4615 steel with wide gear widths for increased torque capacity and extended service life. Multi-cone synchronizers paired with hybrid sintered bronze and carbon rings deliver crisp, smooth shifts even at 7,500 RPM. The robust internal three-rail shift system with steel shift forks eliminates the vague, notchy feel of older transmissions, while a billet aluminum short-throw shifter isolates road noise and provides clean gate-to-gate action. Tapered roller bearings on the input, output, and countershafts reduce noise and improve durability, with caged needle bearings supporting the mainshaft gears.

This package is fully configurable through MDL's guided selection process. Choose between wide ratio gearing (3.27, 1.98, 1.34, 1.00, 0.72) for maximum pulling power and versatility, or close ratio (2.87, 1.89, 1.28, 1.00, with 0.68 or 0.81 overdrive options) for tighter gear spacing and aggressive driving. Every component - from bellhousing and clutch system to hydraulic release bearing and crossmember - is selected specifically for the X-body Nova chassis and LS engine combination. Some tunnel modifications may be required despite the TKX's compact design.

MDL's concierge service ensures you get the right parts matched to your power level, driving style, and budget. Whether you're building a street cruiser or a weekend warrior, this package delivers everything you need to convert your early Nova from automatic or upgrade from an outdated 4-speed to a modern, high-performance 5-speed manual drivetrain.

Package Options Include

  • TREMEC TKX 5-speed transmission (wide ratio or close ratio configurations)
  • Bellhousing options for LS engines (hydraulic or mechanical clutch release)
  • Bellhousing block plate
  • Installation hardware kits (aluminum or steel)
  • Flywheel options for LS applications
  • Flywheel bolts (standard or ARP)
  • Clutch kits from street to high-performance applications
  • Pilot bushing
  • Pressure plate bolts (standard or ARP)
  • Clutch pedal assembly
  • Pedal pad kits
  • Hydraulic master cylinder kits
  • Hydraulic release bearing
  • Hydraulic lines
  • Shift knobs and thread adapters
  • Shift levers (Hurst or custom options)
  • Shift boots
  • Speedometer cable adapters and driven gears
  • Electronic speedometer sensors and wiring harnesses
  • Reverse light wiring harness
  • Nova-specific transmission crossmember
  • Transmission mount
  • TREMEC HP-MTF transmission fluid
  • Transmission tunnel modification components
  • 31-spline slip yokes (1310, 1330, or 1350 U-joint options)
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