TREMEC Magnum 6-Speed Conversion Package | 1967 Chevelle | LS Engine

TREMEC Magnum 6-Speed Conversion Package | 1967 Chevelle | LS Engine

TREMEC Magnum 6-Speed Conversion Package | 1967 Chevelle | LS Engine

Description

Key Features

  • 700 lb-ft torque capacity - nearly double the strength of original T56 transmissions
  • Multiple gear ratio options available: wide ratio (2.97, 2.10, 1.46, 1.00, 0.74, 0.50) or close ratio configurations
  • Double overdrive design for reduced highway RPM and improved fuel efficiency
  • 140 lbs dry weight with 3.66 quart fluid capacity (Dexron III ATF recommended)
  • 26-spline input shaft and 31-spline output shaft
  • Triple-cone synchronizers on 1st-4th gears, double-cone on 5th-6th and reverse for smooth, precise shifts
  • One-piece countershaft eliminates weak spline connection found in earlier T56 designs
  • Multiple shifter positions and dual speedometer pickups for maximum installation flexibility
  • Fully customizable package - select bellhousing, clutch, hydraulics, and accessories to match your build
  • Tunnel modification required - sheet metal extension panel available

Description

Drop serious six-speed capability into your 1967 Chevelle LS swap with this fully customizable TREMEC Magnum conversion package. The Magnum is the aftermarket version of the TR-6060 found in factory muscle cars like the Camaro, Challenger, and Corvette - delivering OEM-grade refinement with aftermarket versatility. At 700 lb-ft of torque capacity, the Magnum handles nearly double what stock T56 transmissions could manage, making it the definitive choice for modern LS builds pushing real power.

The Magnum's strength advantage comes from substantial engineering improvements over earlier T56 designs. Gear face widths are significantly increased, and two-piece laser-beam welded construction enables precise control of tooth angles, pitch, and alignment. The robust one-piece countershaft eliminates the weak spline connection found in two-piece designs, while thicker journals and larger bearings handle extreme loads without deflection. Triple-cone synchronizers on gears 1-4 and double-cone synchronizers on 5th, 6th, and reverse deliver incredibly short, low-effort shift throws with crisp engagement - the kind of mechanical precision that makes rowing through gears a genuine pleasure.

The Magnum's larger case dimensions require transmission tunnel modifications in the 1967 Chevelle. This package includes access to a sheet metal tunnel extension that welds to your OEM floor pan, providing necessary clearance while maintaining structural integrity. Our guided package builder walks you through every component selection - transmission gear ratios, bellhousing material, clutch configuration, hydraulic release system, shifter components, speedometer interface, and driveline hardware - ensuring complete compatibility with your LS engine and specific build requirements.

All MDL TREMEC Magnum packages are engineered with your vehicle and engine combination in mind. We've sourced the highest-quality components from industry leaders to deliver uncompromising performance. Whether you're building a weekend warrior or a daily-driven pro-tourer, our concierge service helps you select the right parts for your project and budget. Contact us with questions - we're here to ensure your conversion exceeds expectations.

What's Included

Select from the following component categories to build your custom package:

  • TREMEC Magnum Transmission - Multiple gear ratio configurations available (wide or close ratio)
  • Bellhousing - LS-pattern aluminum or steel construction options with SFI certification available
  • Bellhousing Hardware Kit - Complete fastener package for transmission-to-bellhousing installation
  • Flywheel - LS-specific SFI-rated steel construction in multiple configurations
  • Flywheel Bolts - Grade 8 or ARP high-performance bolt options
  • Clutch Set - Single or dual-disc options from leading manufacturers including street, street/strip, and race configurations
  • Pilot Bearing or Bushing - Precision-fit for LS crankshaft
  • Pressure Plate Bolts - ARP bolt upgrade available
  • Clutch Pedal Assembly - Powder-coated or black finish options
  • Pedal Pad and Trim Ring - OEM-style replacement
  • Hydraulic Master Cylinder Kit - Complete mounting hardware included in multiple finish options
  • Hydraulic Release Bearing - Self-contained or external slave cylinder options
  • Hydraulic Line - Pre-assembled -4AN braided stainless line
  • Shift Knob - Custom colors and patterns available with thread adapter options
  • Shift Lever - Custom lever options available
  • Shift Boot - OEM-style leather or vinyl replacement options
  • Speedometer Cable Adapter - Polished or black finish
  • Speedometer Gear - Multiple tooth count options to calibrate mechanical speedometers
  • Speedometer Gear Clip - Retaining clip for gear housing
  • Electronic Speedometer Sensor - For electronic gauge integration
  • Speedometer Harness - Plug-and-play wiring
  • Reverse Lockout Controller - Electronic solenoid control module
  • Reverse Lockout Harness - Pre-wired connection
  • Reverse Light Harness - Direct plug-in wiring
  • Transmission Fluid - TREMEC-approved Dexron III ATF (4 quarts)
  • Transmission Mount - Polyurethane construction
  • Tunnel Extension Panel - Sheet metal for required tunnel modification
  • Drive Shaft Yoke - 31-spline output in 1310, 1330, or 1350 U-joint series
  • Lifetime Technical Support - Direct access to MDL drivetrain experts
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