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B&M 20404 - B&M Tork Master Torque Converters



B&M 20404 - B&M Tork Master Torque Converters

JEGS Part Number: 130-20404

Tork Master 2400 Torque Converter
  • 1965-91 GM TH375, TH400 & TH425
  • 1968-81 GM TH350 & TH375B
  • 2300-2500 RPM
  • $220.15

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    B&M 20404 - B&M Tork Master Torque Converters Details

    Tork Master 2400 Converters

  • GM

    For 1965-91 GM TH375, TH400, and TH425
    GM vehicles with variable pitch transmission (some 1965-67 Buick, Oldsmobile, and Cadillac) must have pump and input shaft changed to fixed pitch design to use B&M converter

    For 1968-81 TH350 and TH375B

  • Does not fit TH350C
  • Does not fit lock-up converter or clutch converter models
  • Small (10.75" bolt circle) flexplate or dual pattern flexplate required

  • Specifications:

    Trans Year
    1965
    Trans Year
    1966
    Trans Year
    1967
    Trans Year
    1968
    Trans Year
    1969
    Trans Year
    1970
    Trans Year
    1971
    Trans Year
    1972
    Trans Year
    1973
    Trans Year
    1974
    Trans Year
    1975
    Trans Year
    1976
    Trans Year
    1977
    Trans Year
    1978
    Trans Year
    1979
    Trans Year
    1980
    Trans Year
    1981
    Trans Year
    1982
    Trans Year
    1983
    Trans Year
    1984
    Trans Year
    1985
    Trans Year
    1986
    Trans Year
    1987
    Trans Year
    1988
    Trans Year
    1989
    Trans Year
    1990
    Trans Year
    1991
    Stall Speed (RPM)
    2300-2500
    Trans Model
    GM- TH350 (Auto)3 Speed
    Trans Model
    GM- TH375 (Auto)3 Speed
    Trans Model
    GM- TH400 (Auto)3 Speed
    Trans Model
    GM- TH375B (Auto)3 Speed
    Trans Model
    GM- TH425 (Auto)3 Speed
    Hardware Included
    No
    Anti-Ballooning Plate
    No
    Balanced
    Yes
    Furnace-Brazed
    No
    Lockup
    No
    Quantity
    Sold individually
    Manufacturer's Part Number:
    20404

    Low Price, High Quality, Fully Balanced, and Pressure Tested

    The best value-priced converters available, B&M Tork Masters perform similarly to B&M's Holeshot Series. They are excellent, all-around performance street torque converter with a new alloy steel pump drive tube, needle thrust bearing when factory equipped, and thrust washer between turbine and cover when required.

    Ranges are for small block, mild performance applications:
  • Tork Master 2000: 1900-2100 RPM
  • Tork Master 2400: 2300-2500 RPM
  • Tork Master 3000: 2800-3200 RPM

    Note: Tork Masters are not to be used in transbrake applications or with big blocks.

    Choosing a B&M Torque Converter:
    Car Weight: Street rods generally perform better using a 2400 RPM converter even with a mild motor due to the vehicle's light weight. A 2000 RPM converter tends to require too much braking effort when idling but a 2400 RPM unit remains comfortable and efficient.

    Stall Speed: Very mild street cars use a 2000 RPM stall speed unit. Most street-driven performance cars with 350 foot pounds of torque or more need a 2400 RPM unit. Cars with more radical small blocks (500 foot pounds of torque at 4500 RPM or higher) require a 3000 RPM converter. The more torque a motor puts out, the higher the resulting stall speed. Therefore most street performance big blocks would still use a 2400 RPM converter because they generally achieve 2600-2800 RPM. An engine smaller than 350ci might not achieve such stall speeds, which are based on an engine producing 230 foot pounds of torque at 2500 RPM.

    Tork Master vs. Holeshot: Except for supercharged and nitrous engines, Tork Masters are a great value for most small block applications. Holeshots/Nitrous Holeshots should be used for all applications with 450 foot pounds of torque and all blown or nitrous applications. Holeshot converters are furnace-brazed with more sophisticated bearings. Thus they withstand much more torque and horsepower.

  • Does this fit your vehicle?

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