Auto to T5Z Conversion Package | 1967-1968 Mustang | 450hp Small-Block Ford

Auto to T5Z Conversion Package | 1967-1968 Mustang | 450hp Small-Block Ford

Auto to T5Z Conversion Package | 1967-1968 Mustang | 450hp Small-Block Ford

Description

Key Features

  • Complete automatic-to-manual conversion for '67-'68 Mustangs -- no floor cutting or tunnel modifications required
  • TREMEC Super Duty T5Z handles 330 ft-lb of torque, suitable for streetcars up to 450hp on DOT-approved tires
  • Gear ratios: 2.95, 1.94, 1.34, 1.00, 0.63:1 overdrive -- deep overdrive drops highway RPMs for better fuel economy and quieter cruising
  • 75 lbs dry weight -- the smallest and lightest transmission in TREMEC's lineup, fits where others cannot
  • Offset shifter positions correctly in original automatic console location
  • Guided package configurator walks you through every component selection: bellhousing, clutch, hydraulics, flywheel, and shifter
  • 10-spline input shaft, 28-spline output shaft, steel front bearing retainer, carbon fiber blocker rings

Description

Converting your '67-'68 Mustang from automatic to manual doesn't have to mean cutting floors or fabricating mounts. This complete T5Z conversion package delivers the perfect balance of performance and streetability for first-generation Mustangs, transforming sluggish highway cruising into engaged driving with a fuel-saving 0.63:1 overdrive that drops RPMs, increases fuel economy, and delivers a much quieter in-car feel.

The heart of this package is TREMEC's Super Duty T5Z, built specifically for retrofit applications. With a 2.95:1 first gear for strong takeoff performance and a proven 330 ft-lb torque capacity, this transmission safely supports streetcars up to 450 horsepower on DOT-approved tires. At just 75 lbs dry, it's the smallest and lightest transmission in TREMEC's lineup -- fitting where others cannot and requiring no tunnel modifications in your classic Mustang. The offset shifter design positions correctly in the original automatic shifter location with proper geometry.

MDL's guided package selection system walks you through every component choice -- from QuickTime aluminum or steel bellhousings to hydraulic or cable clutch actuation systems. Choose from billet aluminum, SFI-approved steel, or cast iron flywheels, then select the appropriate clutch package for your power level. The configurator ensures perfect compatibility between every component while giving you control over materials, finishes, and performance levels to match your build and budget.

The T5Z is the best transmission for retrofits of 4-speed or automatics in classic cars with a small-block Ford. This Super Duty version is a step up from the T5s used in '83-'93 Mustangs, featuring double-moly 2nd, 3rd, and countershaft cluster gears, carbon fiber 3-4 blocker rings, improved synchronizers and bearings, and a Cobra-style pocket bearing. Requires 2.75 quarts of ATF Dexron III fluid.

Package Components (Selected via Guided Configurator)

  • TREMEC Super Duty T5Z 5-speed transmission (TREMEC 1352-0251)
  • Custom offset shifter assembly for automatic console location
  • Bellhousing selection: QuickTime aluminum or steel options
  • Bellhousing block plate
  • Bellhousing installation hardware kit (aluminum or steel bolt options)
  • Mechanical clutch fork
  • Flywheel selection: cast steel, billet aluminum, or SFI-approved steel options in multiple balance configurations
  • ARP flywheel bolt kit
  • Clutch kit options: King Cobra or Centerforce
  • Pressure plate bolt kit (standard or ARP)
  • Clutch pedal assembly for automatic-to-manual conversion
  • Pedal pad kit (manual brake or dual brake options)
  • Clutch pedal stop
  • Clutch pedal bushing or bearing
  • Clutch actuation: hydraulic master/slave cylinder kit or cable clutch kit options
  • Shift knob, shift lever, shift boot, and bezel selections
  • Speedometer cable and driven gear (16-21 tooth options for ratio calibration)
  • Speedometer gear retaining clip
  • Crossmember for '67-'73 Mustang
  • Transmission mount
  • 3 quarts ATF transmission fluid
  • Reverse light wiring harness
  • Driveshaft yoke selection: 28-spline in 1310, 1330, or 1350 series
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