TREMEC Magnum 6-Speed Conversion Package | 1964-1966 Chevelle | LS Engine

TREMEC Magnum 6-Speed Conversion Package | 1964-1966 Chevelle | LS Engine

TREMEC Magnum 6-Speed Conversion Package | 1964-1966 Chevelle | LS Engine

Description

Key Features

  • TREMEC Magnum six-speed transmission with 700 lb-ft torque capacity and double overdrive
  • Complete conversion package engineered specifically for 1964-1966 Chevelle with LS engine swaps
  • 26-spline input shaft and 31-spline output shaft with 4616 chromoly gears and one-piece countershaft
  • Triple-cone synchronizers on gears 1-4, double-cone on 5th, 6th, and reverse for precise engagement
  • Multiple gear ratio options available: close ratio (2.66 first) or wide ratio (2.97 first)
  • Laser-beam welded gear construction with positive stops to prevent over-travel on hard shifts
  • 135 lbs dry weight with dual speedometer pickups for mechanical and electronic speedometer systems
  • Includes tunnel modification hardware for proper floor pan fitment

Description

Your '64-'66 Chevelle LS swap deserves more than a cobbled-together drivetrain. This complete TREMEC Magnum conversion package delivers modern six-speed performance engineered specifically for your A-body application. The Magnum represents the pinnacle of TREMEC's aftermarket transmission lineup - the same TR-6060 architecture found in factory Vipers, Camaros, and Challengers, adapted for classic muscle with the versatility builders demand.

The engineering inside the Magnum sets it apart from any six-speed predecessor. Forged gears with laser-beam welded engagement plates enable precise tooth shaping with better pitch and angle control, while positive stops prevent slider over-travel during aggressive shifts. The one-piece countershaft with thicker journals and widened gear faces eliminates the weak splined connection that limited earlier T56 designs. Spring-loaded ball-type detents replace traditional stamped keys, reducing friction and delivering incredibly short, extremely low-effort shift throws with crisp, precise engagement.

The double overdrive configuration transforms highway cruising. With a 2.97 first gear wide ratio setup, 5th gear drops to 0.80 and 6th to 0.63 - ideal for pairing with steep rear gears while keeping cruise RPM reasonable at interstate speeds. The Magnum accepts both mechanical and electronic speedometer signals for maximum gauge compatibility with your build.

Due to the Magnum's case dimensions, tunnel modifications are required for your Chevelle. This package includes a precision-formed sheet metal tunnel extension designed to mate with your original floor pan. Every component in this package is selected by MDL to work together - bellhousing to shift knob - ensuring proper fitment and eliminating compatibility guesswork. Contact MDL for concierge-level assistance in selecting the exact configuration for your project and budget.

Kit Includes

Package components are configurable based on your specific build requirements. Available options include:

  • TREMEC Magnum six-speed transmission (multiple gear ratio configurations available)
  • Custom MDL shifter assembly
  • LS-specific bellhousing (aluminum or steel options with pivot ball provisions available)
  • Bellhousing-to-transmission hardware kit (aluminum or steel bellhousing specific)
  • LS-series steel billet flywheel (multiple crankshaft applications)
  • Flywheel bolt set (standard or ARP options)
  • Performance clutch kit with pressure plate and disc (multiple torque ratings available)
  • Pilot bearing
  • Hydraulic clutch pedal assembly
  • Pedal pad kit
  • Hydraulic master cylinder system (multiple mounting configurations)
  • Hydraulic release bearing
  • Stainless steel braided hydraulic clutch line
  • Shift knobs (custom engraved and standard options)
  • Shift thread adapters
  • Shift lever and boot
  • Speedometer cable adapter, driven gear, and gear retaining clip
  • Electronic speedometer sensor
  • Transmission mount
  • Tunnel modification extension panel
  • Driveshaft yoke (multiple U-joint series available: 1310, 1330, 1350)
  • DEXRON III ATF (4 quarts)
  • Electronic speedometer signal harness
  • Reverse lockout controller and harness
  • Reverse light harness
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