TREMEC T5z 5-Speed Conversion Package | 1969-1970 Mustang/Cougar | Small Block

TREMEC T5z 5-Speed Conversion Package | 1969-1970 Mustang/Cougar | Small Block

TREMEC T5z 5-Speed Conversion Package | 1969-1970 Mustang/Cougar | Small Block

Description

Key Features

  • 2.95:1 first gear and 0.63:1 overdrive ratios for strong launches and relaxed highway cruising
  • 330 ft-lb torque capacity handles mild to moderate small block Ford builds
  • Just 75 lbs dry weight - TREMEC's most compact transmission fits tight first-gen engine bays
  • 10-spline input shaft with 28-spline output [VERIFY: MDL marketing copy states 31-spline output, but Ford T5 specs typically show 28-spline]
  • Uses existing six-bolt bellhousing with included adapter plate - retains stock clutch linkage
  • MDL offset shifter positions correctly in factory shifter hole location
  • Customizable package - select clutch, shifter, driveline, and hardware components to match your build
  • 2.75 quarts Dexron III ATF fluid capacity

Description

Give your '69-'70 Mustang or Cougar a modern five-speed overdrive without cutting sheetmetal or ditching your stock clutch linkage. This customizable TREMEC T5z package solves the classic problem of screaming RPMs at highway speed while keeping the driving experience true to your first-gen Ford. The 0.63:1 overdrive drops cruising revs significantly, improving fuel economy and reducing drivetrain heat - and your ears will thank you on long trips.

The T5z's 2.95:1 first gear delivers strong takeoff performance without the steep ratio of taller-geared OE units, while the 330 ft-lb torque capacity handles street-driven small blocks with authority. At just 75 pounds dry, this is TREMEC's smallest and lightest transmission - perfect for the tight confines of early Mustang engine bays where every inch matters. The aluminum die-cast housings and tapered roller bearings on the main and countershafts reduce noise and improve durability, while needle bearings under first through fourth gears cut drag and lower shift effort.

Installation is straightforward: the transmission bolts to your existing six-bolt bellhousing via the included adapter plate, so you keep your stock clutch fork, linkage, and related components. MDL's offset shifter is engineered specifically for first-gen Mustangs, sliding into the OEM shifter hole to maintain the correct shift position. The complete package allows you to select from multiple clutch options, shifter configurations, driveline components, and installation hardware to match your specific build requirements and budget.

All TREMEC transmissions are built from 100% new OEM-quality components and backed by comprehensive technical support. Whether you're building a weekend cruiser or a daily driver, the T5z delivers modern drivability without sacrificing the classic experience.

What's Included

This is a customizable package. Components vary based on your selections:

  • TREMEC T5z Super Duty 5-speed transmission (MD-552-0251)
  • MDL custom offset shifter options
  • Ford six-bolt bellhousing adapter plate (MD-401-2102)
  • Hardware kit options - aluminum or steel
  • ARP flywheel bolt options
  • Clutch set options - multiple configurations available
  • Pressure plate bolt options
  • Shift knob and lever selections
  • Shift boot and bezel options
  • Speedometer cable and driven gear options
  • Crossmember and transmission mount
  • Transmission fluid - 3 quarts ATF
  • Driveshaft yoke options - multiple U-joint sizes available
  • Lifetime technical support
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