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TCI 451101

11" Breakaway Torque Converter 1970-79 Ford C4

TCI 451101

Part Number: 890-451101

11" Breakaway Torque Converter
  • 1970-79 Ford C4
  • 10-1/2" Bolt Circle
  • Non Lock-up
  • 26-Spline
  • With Anti-Balloning Plate
  • $439.99
    Ships 10/31/16
    if Ordered Today
    FREE Shipping
    TCI 451101 11" Breakaway Torque Converter 1970-79 Ford C4 $439.99

    TCI 451101 Details


  • Dipstick Goes into Transmission Case
  • With heavy-duty anti-ballooning plate for nitrous applications

  • Specifications:

    Diameter (in.)
    Hardware Included
    Anti-Ballooning Plate
    Crank Pilot Diameter (in.)
    Input Spline Quantity
    Sold individually
    Manufacturer's Part Number:

    TCI 11-inch diameter Breakaway Torque Converters are designed for use in moderately modified street machines, weekend racers, and as daily driving use. Breakaway Torque Converters provide between 2400 to 2600 RPM flash stall without negatively affecting part-throttle driving. TCI has engineered these Breakaway Torque Converters to be efficient at highway cruising speeds and to launch hard at wide-open throttle. Each unit is built to meet or exceed OE specification and triple tested during assembly. Once all the prep work on the component parts has been completed, the impeller is welded to the front cover. Immediately following this process, a pair of dial indicators are employed on a rotating table to verify that the impeller body and pump drive hub remain true. Each unit is then pressurized and subjected to a leak test to confirm the integrity of all the weld seams. Lastly, each unit is computer balanced to reduce annoying and potentially damaging drivetrain vibrations that would occur from an unbalanced torque converter. That's Triple Tested so you can be confident you're getting a torque converter that's ready to roll.

  • Furnace-brazed fins
  • Needle bearings
  • Hardened, pre-ground pump hub
  • Computer Balanced
  • Installed Hardware Included

  • Harder launches
  • Quicker acceleration
  • Improved low-end power
  • Bolt-in (no modifications required)
  • 1000+ RPM increase in stall over stock

    Street/Strip Performance Torque Converter General Application Chart

    Torque Converter Series advertised
    camshaft duration
    rear gear ratio engine characteristics expected rpm stall speeds
    small block big block
    Street Rodder stock to 260° stock to 3.23 smooth idle, stock comp. ratio

    1500 to 1700

    1700 to 1900
    Saturday Night Special

    stock to 265°

    stock to 3.23

    smooth idle, stock comp. ratio

    1600 to 1800

    1800 to 2000

    265° to 280°

    3.00 to 3.73

    fair idle, mild modifications

    2200 to 2400

    2400 to 2600

    280° to 300°

    3.55 to 4.56

    rough idle, large fuel system, raised comp. ratio

    3000 to 3400

    3400 to 3600
    Super StreetFighter

    280° to 310°

    3.73 to 4.88

    rough idle, large fuel system, raised comp. ratio top end power

    3500 to 3800

    3800 to 4000
    Ultimate StreetFighter 290°+ 3.73+ 1000+ horsepower with power adders 3500+ 3800+

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