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    TREMEC TKX 5-Speed Conversion Package | 1967 Chevelle | Small Block/Big Block
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    TREMEC TKX 5-Speed Conversion Package | 1967 Chevelle | Small Block/Big Block

    Description ▼▲

    Key Features

    • 600 lb-ft torque capacity with 8,000 RPM engine speed rating and shifts at 7,500 RPM
    • Direct bolt-in replacement for original 4-speed bellhousing patterns - no tunnel modifications required on 1967 Chevelle
    • Compact end-loaded case specifically designed to fit within narrow A-body transmission tunnels
    • 26-spline input shaft with 31-spline output shaft for maximum drivetrain strength
    • All gears and shafts manufactured from special grade steel (ASTM 4615) for increased torque capacity
    • Multi-cone synchronizers with hybrid sintered bronze and carbon rings for smooth high-RPM shifts
    • High-performance short-throw billet aluminum shifter isolates road noise while delivering crisp shifts
    • Three-piece ribbed aluminum housing provides superior structural stiffness and reduced NVH
    • Available in wide ratio (3.27, 1.98, 1.34, 1.00, 0.72) or close ratio (2.87, 1.89, 1.28, 1.00, 0.68) configurations
    • Complete customizable package covers transmission, bellhousing, hydraulics, clutch, flywheel, and all supporting hardware

    Description

    Transform your 1967 Chevelle from automatic to modern 5-speed manual with MDL's complete TREMEC TKX conversion package. Built for both small block and big block Chevrolet applications, this fully customizable kit solves the age-old problem of cramped transmission swaps that require extensive floor pan surgery. TREMEC specifically engineered the TKX case to fit within the narrow confines of '67-'72 Chevelle tunnels, making it a true bolt-in upgrade that retains the stock shifter position for an authentic muscle car feel.

    The TKX's revolutionary end-loaded case design creates a significantly slimmer profile than previous 5-speeds like the TKO, while the ribbed three-piece aluminum housing - main case, intermediate plate, and extension housing - delivers outstanding structural stiffness and improved NVH characteristics. Inside, oversized gear widths and caged needle bearings in all gear positions maximize durability under high-load shifts. The multi-cone synchronizer package with hybrid sintered bronze and carbon rings eliminates the notchy shifter feel common in older transmissions, delivering glass-smooth engagement even at elevated RPM.

    The TKX bolts directly to GM 3-speed and 4-speed Muncie/Richmond bellhousing patterns, letting you choose from aluminum or steel bellhousing options depending on your performance needs. The 31-spline output shaft uses Ford C6-style slip yokes for robust driveline strength, and built-in provisions for both mechanical speedometer drive and electronic speedometer sensors cover any gauge configuration. Fluid capacity is 2.7 quarts of TREMEC HP-MTF or Dexron III/VI ATF.

    MDL's guided package builder walks you through every component selection - from flywheel material and clutch capacity to hydraulic master cylinder finish and shift knob style. Whether you're building a weekend cruiser or a 600 lb-ft street bruiser, this package delivers everything needed for a complete, professional-grade conversion with lifetime technical support from MDL.

    Package Configuration Options

    • TREMEC TKX 5-speed transmission - choice of wide ratio (3.27 first/0.72 overdrive) or close ratio (2.87 first/0.68 overdrive) gearsets
    • Bellhousing - aluminum or high-performance steel options for small block or big block
    • Bellhousing block plate
    • Transmission-to-bellhousing hardware kit - aluminum or steel bellhousing specific
    • Flywheel - steel, aluminum, or nodular iron options for 168-tooth applications; multiple balance and crankshaft configurations available
    • ARP flywheel bolt kit
    • Clutch kit - multiple disc materials and torque capacities available for hydraulic release
    • Pressure plate bolt kit - standard or ARP
    • Clutch pedal assembly - polished or black finish
    • Pedal pad kit
    • Hydraulic master cylinder kit - polished, black, or chrome finish
    • Hydraulic release bearing for TKX
    • Braided stainless hydraulic clutch line
    • Shift knob - multiple styles, colors, and thread adapters available
    • Shift lever - Hurst or MDL custom options
    • Shift boot
    • Speedometer cable adapter or electronic speedometer sensor
    • Speedometer driven gear - multiple tooth counts for accurate calibration
    • Reverse light wiring harness
    • Crossmember kit
    • Transmission mount
    • TREMEC-approved transmission fluid
    • Driveshaft slip yoke - 31-spline, multiple U-joint series available (1310, 1330, 1350)
    • Lifetime technical support from MDL
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