T56 Magnum 6-Speed Conversion Package | 1970-1974 Mopar E-Body | Big Block Auto

T56 Magnum 6-Speed Conversion Package | 1970-1974 Mopar E-Body | Big Block Auto

T56 Magnum 6-Speed Conversion Package | 1970-1974 Mopar E-Body | Big Block Auto

Description

Key Features

  • 700 lb-ft torque capacity -- TREMEC's strongest 6-speed manual transmission
  • Double overdrive gear ratios with multiple configurations available (2.97 first gear with 0.74/0.50 overdrives)
  • 26-spline input shaft, 31-spline output shaft
  • 135 lbs dry weight -- significantly lighter than factory automatic transmissions
  • Triple-cone synchronizers on 1st-4th gears, double-cone on 5th, 6th, and reverse
  • Dual speedometer pickups for mechanical or electronic speedometer compatibility
  • Complete auto-to-manual conversion with all drivetrain components included
  • Multiple flywheel options for 383/400, 426 Hemi, and 440 big block engines
  • Fully customizable package builder with transmission, clutch, hydraulic, and shifter options

Ditch the slush box and take command of your 1970-1974 Challenger or 'Cuda. This complete conversion package transforms your automatic E-Body into a proper driver's car with TREMEC's flagship Magnum 6-speed -- the strongest, smoothest-shifting manual transmission available for the aftermarket. The Magnum handles 700 lb-ft of torque with ease, making it the ideal match for high-output 383, 400, 426 Hemi, and 440 big blocks that overwhelm lesser transmissions.

The double overdrive configuration dramatically reduces highway RPM, improving fuel economy and reducing engine stress during long cruises. Choose from multiple gear ratio configurations to match your driving style and rear axle gearing. Inside, 4616 chromoly gears and shafts with laser-beam welded construction deliver precise tooth engagement and exceptional durability. Triple-cone synchronizers on the lower gears and double-cone synchros on the overdrives provide smooth, low-effort shifts that rival modern supercars -- because the Magnum shares its TR-6060 architecture with factory performance machines like the Dodge Viper and Challenger.

This guided package builder walks you through every component selection: choose your transmission gear ratio, engine-specific flywheel (383/400, 426 Hemi, or 440), complete clutch assembly, hydraulic release system with master cylinder and release bearing, shift lever style (Hurst or MDL custom), shift knob finish, speedometer gear, wiring harnesses, and driveshaft yoke. Every piece is selected to work together as a complete, bolt-in system. MDL's concierge service is available if you need help making the right selections for your specific project and budget.

Package Options Include

  • TREMEC T56 Magnum 6-speed transmission (choice of gear ratios)
  • Lakewood bellhousing for big block Mopar
  • Hardware kit
  • Steel flywheel assembly -- engine-specific options for 383/400, 426 Hemi, or 440
  • ARP flywheel bolts
  • Pressure plate bolts (standard or ARP upgrade available)
  • Complete clutch set
  • Pilot bearing
  • Hydraulic master cylinder kit
  • Hydraulic clutch release bearing assembly (multiple configurations available)
  • Hydraulic line (30-inch)
  • Transmission mount
  • Shift lever (Hurst or MDL custom options)
  • Shift knob (multiple colors and styles)
  • Shift boot (Hurst compatible)
  • Speedometer driven gear (16-21 tooth options)
  • Speedometer wiring harness
  • Reverse light wiring harness
  • Driveshaft yoke (1310, 1330, or 1350 series options)
  • 4 quarts transmission fluid (Dexron III ATF)
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