TREMEC T56 Magnum 6-Speed Conversion Package | 1967 Firebird | Pontiac V8

TREMEC T56 Magnum 6-Speed Conversion Package | 1967 Firebird | Pontiac V8

TREMEC T56 Magnum 6-Speed Conversion Package | 1967 Firebird | Pontiac V8

Description

Key Features

  • 700 lb-ft torque capacity with 135 lbs dry weight--nearly double the original T56's strength
  • Multiple gear ratio options: wide ratio (2.97, 2.10, 1.46, 1.00, 0.80, 0.63) or close ratio (2.66, 1.78, 1.30, 1.00, 0.80, 0.63)
  • 26-spline input shaft and 31-spline output shaft with one-piece countershaft design
  • Double and triple cone synchronizers with increased face-width gears and 2-piece laser-beam welded construction
  • Double overdrive ratios (0.80 fifth, 0.63 sixth) for reduced highway RPM and improved fuel economy
  • Fully customizable component selection covering transmission, bellhousing, clutch, hydraulics, shifter, and driveline
  • Little to no tunnel modifications required--retains stock shifter position
  • 100% brand-new OEM-quality components with TREMEC factory warranty

Description

Transform your 1967 Firebird with a TREMEC T56 Magnum 6-speed double overdrive package engineered specifically for Pontiac V8 applications. This comprehensive conversion solves the classic muscle car compromise between strong acceleration and comfortable highway cruising. With 700 lb-ft of torque capacity--nearly double the original T56--the Magnum handles serious power while delivering smooth, precise shifts that modern performance drivers expect.

The Magnum's engineering advances set it apart from earlier 6-speeds. Gears feature substantially increased face widths and 2-piece laser-beam welded construction, allowing for greater control of tooth angles, pitch, and alignment. A robust one-piece countershaft resists distortion far better than previous two-piece designs, while triple cone synchronizers on gears 1-4 and double cone synchronizers on 5-6 and reverse ensure high-rpm shift capabilities without notchiness. Enhanced webbing in the main case, provisions for a cooler circuit, and split ring retainers (replacing traditional snap rings) deliver greater thrust load capacity and tighter tolerances throughout.

Installation in your '67 Firebird requires little to no tunnel modifications, and the Magnum's versatile shifter positioning retains that factory look and feel. This package includes options for every component: bellhousing to mate your Pontiac V8, flywheel choices in various balances, clutch sets from single to twin-disc configurations, hydraulic actuation systems, custom MDL or Hurst shifters, speedometer solutions, reverse lockout electronics, and driveline components. Our guided package builder walks you through each selection to match your specific engine combination and performance goals.

Whether you're building a weekend cruiser or a high-performance pro-tourer, the Magnum's double overdrive ratios (0.80 fifth, 0.63 sixth) drop highway RPM significantly while the wide or close ratio options let you tune first-through-fourth gearing to your driving style. Every transmission is built from 100% brand-new OEM-quality content and backed by TREMEC's factory warranty.

What's Included

  • TREMEC T56 Magnum 6-speed transmission (multiple gear ratio configurations available)
  • Bellhousing for Pontiac V8 to TREMEC Magnum bolt pattern
  • Bellhousing hardware kit with all necessary fasteners
  • Flywheel options in early or late Pontiac balance patterns
  • ARP flywheel bolt kit
  • Clutch set selection (single and twin-disc options for hydraulic release)
  • Pilot bushing (required for twin-disc clutch applications)
  • Pressure plate bolt kit (standard or ARP)
  • Clutch pedal assembly and pedal pad kit
  • Hydraulic master cylinder kit (multiple reservoir configurations)
  • Hydraulic release bearing (2100 Series or 2500 Series options)
  • Braided stainless hydraulic line
  • Shifter selection (MDL custom or Hurst lever options)
  • Shift boot, shift plate, and console components with 6-speed emblem
  • Speedometer cable adapter and driven gear (multiple tooth counts) or electronic sensor
  • Reverse lockout controller with solenoid harness
  • Reverse light wiring harness
  • Transmission crossmember mount
  • TREMEC-specified transmission fluid (4 quarts)
  • Driveshaft slip yoke (1310, 1330, or 1350 U-joint series, 31-spline)
  • Complete installation documentation and lifetime technical support
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