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    TREMEC T56 Magnum 6-Speed Package | 1964-1966 Chevelle | Small Block/Big Block
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    TREMEC T56 Magnum 6-Speed Package | 1964-1966 Chevelle | Small Block/Big Block

    Description ▼▲

    TREMEC T56 Magnum 6-Speed Package | 1964-1966 Chevelle | Small Block/Big Block

    Key Features

    • 700 lb-ft torque capacity - nearly double the original T56's rating
    • Double overdrive configuration with 0.74 fifth and 0.50 sixth gear ratios for relaxed highway cruising
    • Multiple gear ratio options: 2.97 or 2.66 first gear with unique overdrive combinations
    • 26-spline input shaft and 31-spline output for maximum strength
    • Triple-cone synchronizers on 1st-4th gears, double-cone on 5th, 6th, and reverse
    • Two-piece laser-beam welded gear construction for precise tooth geometry and positive engagement stops
    • One-piece chromoly countershaft with thicker journals eliminates weak splined connections
    • Spring-loaded ball-type detent inserts replace problematic stamped keys for smooth, notch-free shifts
    • Dual speedometer pickups accommodate mechanical or electronic systems
    • Complete configurable package includes transmission, bellhousing, clutch, hydraulics, and all supporting hardware
    • Made in the USA with lifetime MDL technical support

    Description

    Transform your '64-'66 Chevelle into a modern performance machine with this complete TREMEC T56 Magnum conversion package. Whether you're running a small block or big block Chevy, this fully configurable kit delivers everything needed to swap in TREMEC's flagship 6-speed - the same transmission architecture found in factory supercars like the Dodge Viper and Chevrolet Camaro. With 700 lb-ft of torque capacity, the Magnum handles nearly double what the original T56 could withstand, making it the no-compromise solution for high-horsepower street and pro-touring builds.

    The Magnum's engineering represents a significant evolution over the original T56. Two-piece laser-welded gears with substantially increased face widths replace the one-piece forgings of earlier designs, allowing precise control of tooth angles, pitch, and alignment while adding positive stops to prevent over-travel on hard shifts. The spring-loaded ball-type detent inserts eliminate the notchy shifting caused by worn stamped keys in older transmissions, delivering ultra-short, smooth throws with crisp engagement. Enhanced shift forks with permanently mounted steel links and improved cross-sections provide zero deflection and eliminate the gear jump-out issues that plagued earlier T56 designs.

    The double overdrive configuration transforms highway driving. Fifth gear at 0.74 provides a mild overdrive for spirited cruising, while sixth gear's aggressive 0.50 ratio drops engine RPM dramatically - reducing cabin noise, engine stress, and fuel consumption on long hauls. The result is a transmission that delivers brutal launch capability with a 2.97 first gear option while remaining completely civilized at highway speeds.

    Due to the Magnum's larger case dimensions, tunnel modifications are required for '64-'66 Chevelle fitment. MDL includes an available sheet metal tunnel extension designed to attach directly to the OEM floor pan. The guided package selection walks you through every component choice - transmission, bellhousing, clutch system, flywheel, hydraulics, shifter, speedometer provisions, driveline components, and more - ensuring perfect compatibility for your specific small block or big block combination. MDL's concierge service is available to help match components to your project and budget.

    What's Included

    • TREMEC T56 Magnum 6-speed transmission (multiple gear ratio configurations available)
    • Custom billet shifter assembly
    • Six-speed bellhousing for small block and big block Chevy applications
    • Complete transmission-to-bellhousing hardware kit
    • Flywheel options (steel and aluminum, application-specific configurations)
    • ARP flywheel bolt set
    • Clutch assembly options (hydraulic-compatible configurations)
    • Twin-disc clutch pilot bearing options
    • Pressure plate bolt sets (standard and ARP)
    • Hydraulic clutch pedal assembly
    • Pedal pad kit (dual brake or manual brake configurations)
    • Hydraulic master cylinder kit (multiple bore sizes and finishes)
    • Hydraulic release bearing assembly
    • Braided stainless steel hydraulic line
    • Custom shift knobs (multiple colors, materials, and thread patterns)
    • Shift knob thread adapters
    • Hurst and custom shift lever options
    • Shift boot
    • Speedometer cable adapter and driven gear (16-21 tooth options)
    • Electronic speedometer sensor option
    • Speedometer and reverse light wiring harnesses
    • Reverse lockout controller and solenoid harness
    • 4 quarts TREMEC-approved transmission fluid (Dexron III ATF)
    • Transmission crossmember mount
    • Sheet metal tunnel extension
    • Driveshaft slip yoke (1310, 1330, or 1350 series options, 31-spline)
    • Complete installation documentation
    • Lifetime MDL technical support
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