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    TREMEC T56 Magnum 6-Speed Conversion Package | 1960-1976 Mopar A-Body | Small Block
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    TREMEC T56 Magnum 6-Speed Conversion Package | 1960-1976 Mopar A-Body | Small Block

    Description ▼▲

    Key Features

    • TREMEC T56 Magnum rated for 700 lb-ft of torque capacity - the strongest 6-speed manual transmission available
    • Double overdrive gear ratios for reduced highway RPM and improved fuel economy
    • Multiple transmission options with close-ratio (2.66) or wide-ratio (2.97) first gear configurations
    • Triple-cone synchronizers on gears 1-4, double-cone on 5th, 6th, and reverse for smooth, precise shifts
    • 26-spline input shaft with 31-spline output accommodates single and twin-disc clutch setups
    • Fully reversible TKO-style die-cast aluminum shifter with multiple mounting positions
    • Complete package includes bellhousing, flywheel, clutch, hydraulics, crossmember, and tunnel extension
    • Fits 1960-1976 Mopar A-body applications: Dart, Valiant, Duster, Demon, Dart Sport, Barracuda, and Scamp

    Description

    Ditch the slushbox and transform your Mopar A-body into a true driver's car with this comprehensive TREMEC T56 Magnum 6-speed conversion package. Purpose-built for 1960-1976 A-body small block V8 applications, this fully customizable package delivers everything you need to swap from automatic to a modern double-overdrive manual transmission capable of handling over 700 lb-ft of torque.

    The TREMEC Magnum represents the pinnacle of aftermarket 6-speed technology. Based on the TR-6060 architecture found in factory supercars like the Corvette ZR1 and Dodge Viper ACR, the Magnum features substantially widened gear face widths, forged gears with laser-beam welded engagement teeth, and a robust one-piece countershaft for exceptional strength. Spring-loaded ball-type synchronizer inserts replace the stamped-steel keys of earlier T56 designs, eliminating notchy shifting and delivering incredibly short, low-effort throws with crisp engagement every time.

    Due to the Magnum's larger case dimensions compared to factory transmissions, tunnel modifications are required for proper driveline angles. This package includes a sheet metal tunnel extension and floor support that attaches directly to your OEM floor pan, plus a custom crossmember and transmission mount for correct positioning. Our guided package selection walks you through every component choice - from transmission gear ratios and clutch configurations to hydraulic systems and shifter options - ensuring perfect compatibility for your specific build.

    Whether you're building a weekend cruiser or a serious pro-touring machine, this package delivers the strength, refinement, and versatility that modern drivetrain technology offers. Select from multiple TREMEC Magnum variants, single or dual-disc clutch assemblies, hydraulic or mechanical release systems, and premium shifter options from Hurst or our custom MDL series.

    Package Includes

    • TREMEC T56 Magnum 6-speed transmission (choice of gear ratios)
    • Mopar small block bellhousing
    • Steel flywheel
    • ARP flywheel bolts
    • Pressure plate bolts (standard or ARP)
    • Clutch assembly (choice of single or dual-disc configurations)
    • Hydraulic master cylinder kit
    • Hydraulic release bearing and clutch line
    • Shift lever (Hurst or custom MDL options)
    • Shift knob (multiple style and color options)
    • Shift boot
    • T56 hardware kit (2 sets)
    • Speedometer driven gear
    • 4 quarts DEXRON III ATF transmission fluid
    • Custom crossmember
    • Transmission mount
    • Tunnel extension sheet metal
    • Speedometer harness
    • Reverse light harness
    • Driveshaft yoke (choice of 1310, 1330, or 1350 series)
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