Original Parts Group Logo
US & Canada Phone Number 1-800-243-8355
International Phone Number 1-562-594-1000
Select Your Vehicle Choose Your Vehicle for a Custom Shopping Experience
Part fits the following years1970, 1971, 1972

    Conversion Kit, ProFit, Magnum 6-Speed wide ratio Fits 1970-72 Monte Carlo+ 3 other models

    Retail Price $4,839.95 You Save $439.96
    OPGI Price$4,399.99
    Part# CH31431
    Ships direct from manufacturer.

    Modern 6-speed manual transmission.

    Available in two different gear ratios.

    Do you want to have the convenience of a modern 6-speed transmission in your classic GM A-Body, but do not know what to purchase? OPGI now offers these T-56 Magnum 6-speed ProFit Conversion Kits from American Powertrain. Regardless of having a stump-pulling 600 horsepower big block or a modest 350 horsepower small block under the hood, these 6-speed T-56 Magnum transmissions are built to withstand up to 700 lb.-ft. of torque. Available in either a close ratio or wide ratio configuration, we have exactly what you are looking for your application. American Powertrain has designed these kits to be as comprehensive as possible, yet allowing for some customization to what you as the customer is looking for in the perfect transmission for your application.

    Each kit includes: AP Revolution shifter mechanism for OE 4-speed position, seamless DOM driveshaft assembly, cryo hardened steel driveshaft slip yoke, transmission mount, stainless roller pilot bearing, modular reverse light harness, modular reverse lock-out harness, mechanical or electronic speedometer conversion, transmission tunnel patch, shifter knob, hardware, detailed instructions and warranty information. Close ratio Gear Ratio: 1st: 2.66, 2nd: 1.78, 3rd: 1.30, 4th: 1.00, 5th: 0.80, 6th: 0.63 Wide ratio Gear Ratio: 1st: 2.97, 2nd: 2.10, 3rd: 1.46, 4th: 1.00, 5th: 0.74, 6th: 0.50.

    • Requires bellhousing adapter or engine specific bellhousing.
    • Requires 26-spline clutch disc.
    • Please call when converting from an automatic transmission to obtain a list of parts needed.
    • Modifications are necessary.
    • These high-performance items are not eligible for any further discounts or promotional pricing.
    • High Performance, designed to improve performance.
    • Find in OPGI's 2018 Monte Carlo Catalog page 292.
    • SHIP NOTE: This item exceeds standard size and is exempt from free shipping. more info
    • SHIP NOTE: This item cannot be shipped FedEx Ground and requires Truck Freight Delivery which must be prepaid by credit or check (no C.O.D). Please call or email us for an exact quote. more info
    • SHIP NOTE: This item is SPECIAL ORDER and will be drop-shipped from the manufacturer. more info
    California Prop 65 Icon WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

    Similar Items

    Vehicle Fitment

    Make & ModelYear RangeApplication Details
    Chevrolet Chevelle1968-1972 Wide Ratio
    Chevrolet El Camino1968-1972 Wide Ratio
    Chevrolet Monte Carlo1970-1972 Wide Ratio
    Pontiac Grand Prix1969-1972 Wide Ratio

    Customer Reviews (0)

    Switch to Mobile Site »

    Original Parts Group

    Special Deals!
    Never Miss A Promotion
    If you see this, please contact your IT department and ask them to unblock www.opgi-static.com