TREMEC Magnum 6-Speed Complete Conversion Package | Mopar Big Block

TREMEC Magnum 6-Speed Complete Conversion Package | Mopar Big Block

TREMEC Magnum 6-Speed Complete Conversion Package | Mopar Big Block

Description

TREMEC Magnum 6-Speed Complete Conversion Package | Mopar Big Block

Key Features

  • 700 lb-ft torque capacity - handles serious power from built 383, 400, 426, and 440 big blocks
  • Choice of 2.66 close-ratio or 2.97 wide-ratio first gear sets with double overdrive (0.80 fifth / 0.63 sixth)
  • 26-spline input shaft and 31-spline output shaft for maximum strength
  • 135 lbs dry weight - significantly lighter than OEM T56 variants
  • Triple-cone synchronizers on gears 1-4, double-cone on 5-6 and reverse for smooth, high-RPM shifts
  • One-piece countershaft and laser-welded two-piece speed gears with increased face width
  • Complete package includes SFI-rated bellhousing, hydraulic clutch system, flywheel, clutch assembly, shifter, and all supporting components
  • Customizable component selection guided by MDL technical specialists
  • 100% brand-new OEM-quality components throughout

Description

Building a Mopar big block that makes serious power demands a transmission that can handle it. The TREMEC Magnum is the aftermarket version of the TR-6060 - the same architecture found in the Dodge Challenger, Viper, and Chevrolet Camaro from the factory. MDL's complete conversion package eliminates the guesswork of piecing together a swap from multiple vendors, providing every component needed to put a modern 6-speed behind your 383, 400, 426, or 440.

The Magnum's 700 lb-ft torque rating comes from substantial engineering improvements over the original T56: wider gear faces, a bolstered one-piece countershaft, larger input bearings, and an enhanced main case with strategic reinforcement throughout. Two-piece laser-welded speed gears allow precise tooth geometry that eliminates the manufacturing limitations of older single-piece forgings. Triple-cone synchronizers on gears 1-4 and double-cone units on 5-6 deliver incredibly short, low-effort shifts with crisp engagement - even at high RPM.

Choose between two gear ratio sets to match your application. The 2.66 close-ratio first gear suits high-horsepower builds where you want tighter spacing through the gears. The 2.97 wide-ratio first gear delivers stronger launch characteristics and works well with numerically lower rear axle ratios. Both configurations feature double overdrive gearing (0.80 fifth, 0.63 sixth) that dramatically reduces highway RPM for relaxed cruising and improved fuel economy - without sacrificing performance when you need it.

MDL's guided package selection walks you through component choices for your specific engine, vehicle, and performance requirements. The system includes transmission mounting hardware, hydraulic clutch components, speedometer solutions, reverse light wiring, and detailed installation guidance. Tunnel modifications may be required depending on the vehicle. MDL technical specialists are available to help configure the right combination for your project and budget.

Kit Includes

  • TREMEC Magnum 6-speed transmission (choice of 2.66 close-ratio or 2.97 wide-ratio gear sets)
  • Quick Time SFI-rated steel bellhousing for Mopar big block to GM T56/Magnum bolt pattern
  • Transmission-to-bellhousing hardware kit
  • Hydraulic master cylinder kit (multiple bore sizes available)
  • Hydraulic release bearing (internal or external configuration)
  • Internal release bearing spacer (when applicable)
  • -4AN hydraulic line (30-inch)
  • Clutch kit with pressure plate and disc (10.5-inch, 26-spline)
  • Billet steel flywheel (application-specific for 383/400, 426, or 440)
  • ARP flywheel bolt set
  • ARP or standard pressure plate bolt set
  • Pilot bearing
  • Transmission mount
  • Shift lever (Hurst or MDL custom options available)
  • Shift boot
  • Speedometer cable adapter or electronic sensor
  • Speedometer driven gear (multiple ratios available)
  • Speedometer gear retaining clip
  • Reverse light wiring harness
  • Speedometer wiring harness (electronic applications)
  • Driveshaft yoke (1310, 1330, or 1350 U-joint sizes, 31-spline)
  • TREMEC HP-MTF transmission fluid (4 quarts)
  • Lifetime technical support
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