TREMEC Magnum 6-Speed Conversion Package | 1999-2004 Mustang 4.6L

TREMEC Magnum 6-Speed Conversion Package | 1999-2004 Mustang 4.6L

TREMEC Magnum 6-Speed Conversion Package | 1999-2004 Mustang 4.6L

Description

Key Features

  • 700 lb-ft torque capacity - nearly double the factory TR3650's 360 lb-ft rating
  • Double overdrive ratios (0.80 5th / 0.63 6th or 0.74 5th / 0.50 6th) for reduced highway RPM and improved fuel economy
  • Multiple gear ratio options: 2.66 close-ratio or 2.97 wide-ratio first gear configurations
  • 26-spline input shaft and 31-spline output - a massive upgrade over the TR3650's 10-spline input
  • Triple-cone synchronizers on gears 1-4, double-cone on 5th, 6th, and reverse for smooth, precise shifts
  • Forged gears with laser-beam welded engagement teeth for superior strength and shift precision
  • Retains stock shifter position - no interior modifications required
  • Minimal tunnel modifications for straightforward installation
  • Customizable package - select transmission, bellhousing, clutch, hydraulics, and driveline components matched to your build

Description

Your 1999-2004 Mustang's TR3650 five-speed was adequate when your 4.6L modular V8 was stock, but serious power upgrades expose its 360 lb-ft torque limit and fragile 10-spline input shaft as weak links. MDL's TREMEC Magnum conversion package delivers a complete drivetrain solution engineered for high-performance builds - transforming your New Edge Mustang from a five-speed with a single overdrive into a modern six-speed with double overdrive capability and nearly twice the torque capacity.

The TREMEC Magnum takes the best from TREMEC's OEM TR-6060 architecture - the same transmission found in factory supercars like the Dodge Viper and Chevrolet Camaro - and combines it with the proven features of the TKO 5-speed. Inside, forged gears with laser-beam welded engagement teeth allow precise tooth angles and pitch control impossible with traditional one-piece forgings. A robust one-piece countershaft eliminates the spline-connected two-piece design that limited earlier T56 variants. Triple-cone synchronizers on gears 1-4 and double-cone synchronizers on 5th, 6th, and reverse deliver crisp, high-RPM shifts even under hard driving.

The double overdrive configuration is where the Magnum really changes your driving experience. Whether you choose the 0.80/0.63 or 0.74/0.50 overdrive ratios, you'll see significantly lower highway cruising RPMs compared to your single-overdrive TR3650. Lower RPMs mean reduced engine wear, better fuel economy, and a quieter cabin on long highway pulls. The 26-spline input shaft handles far more abuse than the TR3650's 10-spline unit, and the 31-spline output matches your factory driveline.

MDL's package approach eliminates guesswork. Our guided selection process walks you through every component: transmission gear ratio options, aluminum or steel bellhousing, clutch assemblies sized for your power level, cable-actuated clutch release for '99-'04 applications, crossmember, wiring harnesses, driveshaft solutions, and ARP hardware. Every component is proven in real-world applications. This is a TR3650-to-Magnum conversion designed specifically for your 1999-2004 Mustang GT or Cobra with the 4.6L modular engine - the stock shifter position is retained, and minimal tunnel work gets you on the road faster.

What's Included

  • TREMEC Magnum 6-speed transmission (choice of 2.66 or 2.97 first gear ratio configurations)
  • Ford modular bellhousing (aluminum or steel options)
  • Bellhousing hardware kit (aluminum or steel bellhousing specific)
  • Clutch assembly for 4.6L cable-actuated applications
  • Clutch disc and pressure plate set (multiple performance levels available)
  • ARP flywheel bolt kit
  • ARP pressure plate bolt kit
  • Crossmember for 1999-2004 Mustang Magnum fitment
  • Shift knob (multiple materials and finishes available)
  • Shift knob thread reducer (12mm x 1.75)
  • Speedometer wiring harness
  • Reverse light wiring harness (multiple options)
  • Transmission fluid - 4 quarts ATF
  • Driveshaft options for proper Magnum fitment
  • Drive shaft yoke (1310, 1330, or 1350 U-joint size options, 31-spline)
  • MDL lifetime technical support
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