TREMEC Magnum 6-Speed Conversion Kit for MOPAR Street Rod & Truck

Unleash the full potential of your high-horsepower MOPAR project. The TREMEC Magnum 6-Speed Conversion Kit by Silver Sport Transmissions (SST) brings legendary strength and double-overdrive refinement to your classic street rod or truck. Built to easily handle massive modern power plants, this kit delivers an elite driving experience on the street, highway, or track.

This is our specialized Basic Kit, packed with essential core components. It is the ideal setup for custom builders, hot rodders, and fabricators who prefer to modify their own transmission tunnel humps and crossmembers.

Why Upgrade to the TREMEC Magnum 6-Speed?

The TREMEC Magnum is the absolute benchmark for high-performance manual drivetrains, offering a flawless blend of track-ready durability and street manners.

• Massive 700 lb-ft Torque Capacity: Engineered to handle high-performance big blocks, modern Gen III HEMIs, and forced-induction builds up to 7,800 RPM shifts.
• Double Overdrive Efficiency: Delivers an incredible 30% to 50% increase in fuel economy. Experience low-RPM highway cruising that lowers engine operating temperatures, reduces engine wear, and makes long road trips enjoyable again.
• Crisp, High-RPM Shifting: Standard friction-lined synchronizer blocker rings ensure effortless, smooth gear changes even under aggressive driving conditions.
• Whisper-Quiet Comfort: Significantly reduces NVH (noise, vibration, and harshness) inside the cab for an improved overall driving experience.
• Bench Seat Friendly: An optional Front Shift Kit is available to provide perfect shifter placement and clear classic bench seats.

Available Magnum Gear Ratios

Configure your transmission to match your rear-end differential and driving style with close-ratio or wide-ratio gearing:

Basic Kit Components (The Essentials)

Our streamlined basic package includes the critical components needed to establish your powertrain foundation:

• TREMEC Magnum 6-Speed Double Overdrive Transmission: Top-tier 700 lb-ft torque capacity unit.
• Premium Pilot Bearing: Super heavy-duty needle roller type with an integrated lube seal for an extended service life.
• Transmission Vibration Isolation Mount: High-grade rubber mount engineered to absorb and isolate drivetrain vibrations.
• Speedometer Connection: Works seamlessly with mechanical or electronic gauges. Includes your choice of a calibrated speedometer cable or an electronic connector.
• Premium Electrical & Hardware: Includes a matching slip yoke, waterproof reverse light connector, and fully labeled installation hardware.
• Documentation & Support: Detailed, step-by-step installation instructions backed by our market-leading warranty and free lifetime technical support.

Note: Driveshafts are not included automatically but may be purchased separately.

Optional Upgrades & Custom Build Add-Ons

Complete your manual conversion with premium performance parts tailored specifically to your project's horsepower requirements:

• McLeod Flywheels & Clutch Kits: Billet steel flywheels for maximum safety and durability (never cast steel), paired with low-effort, high-performance street clutches.
• High-Strength Bellhousings: Choose from weight-saving titanium-aluminum OEM-type housings or high-grade steel scatter shields designed to meet strict race track safety requirements.
• Shifter Customization: Custom shifter handles and classic white or black 6-speed engraved shift balls for that timeless look.
• Premium Hydraulics: Heavy-duty performance hydraulic throwout bearings for light pedal effort and reliable engagement.

Get a Custom Quote for Your MOPAR Project

Ready to build the ultimate MOPAR powertrain? Let our drivetrain technicians tailor the exact gear ratios, clutch setups, and custom shift locations for your street rod or classic truck build.

Click Here to Request a Quote Today