Description
HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) Application: HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) A higher than stock stall speed as delivered by the Holeshot converter will provide several advantages and benefits in vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low end power and torque. The high stall converter allows the engine to launch the car at higher rpm where more torque is available. The Holeshot is generally a very good choice for the typical street machine that is looking for better launch capability and more strength. Street rods with modified engines will also benefit from a Holeshot converter. If your vehicle is equipped with a plate type nitrous system, you will need a Nitrous Holeshot!! Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Furnace brazed impeller. New precision steel alloy pump drive tube. New heavy duty needle bearing between stator and impeller (not a thrust washer). Needle bearing between stator and turbine. Furnace brazed turbine. Dual pattern drive lugs on some GM Holeshots. New turbine hub. New springs and rollers in stator. Due to torque converter core availability, the actual converter size may vary but performance functionality will be as advertised.
Resources
Installation Instructions
Specifications:
| Automotive Item Grade | High Performance |
| Bolt Circle Diameter | 10.750 in. |
| Description_ASC | Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations |
| Description_ASM | Fits GM 1965 to 1991 TH400; 425; 375 and 1968 to 1981 TH350; 375B (not 350C) automatic transmissions. Requires small 10.75 inch bolt circle flexplate or dual pattern flexplate. |
| Description_DEF | Auto Trans Torque Converter |
| Description_DEF | Automatic Transmission Torque Converter |
| Description_DES | Holeshot 2400 Torque Converter |
| Description_EXT | Holeshot 2400 Torque Converter; 2300 – 2500 RPM Stall; Requires 10.75 in. Bolt Circle/Dual Pattern Flexplate; |
| Description_FAB | Between Stator and Turbine |
| Description_FAB | Furnace Brazed Impeller |
| Description_FAB | Furnace Brazed Turbine |
| Description_FAB | Heavy Duty Needle Bearing |
| Description_FAB | New Springs/Rollers In Stator |
| Description_FAB | New Turbine Hub |
| Description_FAB | Steel Alloy Pump Drive Tube |
| Description_INV | HOLESHOT 2400 TH400/350 |
| Description_KEY | 20412; Torque Converter; B/M; b and m; transmission; manual; automatic; shift kit; improver; transkit; racing; knob; lever; torque converter |
| Description_LAB | Made In Logo |
| Description_MKT | HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) Application: HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) A higher than stock stall speed as delivered by the Holeshot converter will provide several advantages and benefits in vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low end power and torque. The high stall converter allows the engine to launch the car at higher rpm where more torque is available. The Holeshot is generally a very good choice for the typical street machine that is looking for better launch capability and more strength. Street rods with modified engines will also benefit from a Holeshot converter. If your vehicle is equipped with a plate type nitrous system, you will need a Nitrous Holeshot!! Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Furnace brazed impeller. New precision steel alloy pump drive tube. New heavy duty needle bearing between stator and impeller (not a thrust washer). Needle bearing between stator and turbine. Furnace brazed turbine. Dual pattern drive lugs on some GM Holeshots. New turbine hub. New springs and rollers in stator. Due to torque converter core availability, the actual converter size may vary but performance functionality will be as advertised. |
| Description_MKT | HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot converter is an excellent choice for vehicles with some performance engine modifications, particularly big cams that tend to reduce low-end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75-inch bolt circle. |
| Description_SHO | Torque Converter |
| Flexplate Change Needed | Yes |
| Furnace-Brazed | Yes |
| height | 7.3 |
| length | 14.9 |
| LTL | N |
| Material | Steel |
| Stall Speed (RPM) | 2300-2500 |
| Title | B&M 20412 Holeshot 2400 |
| Trans Model | GM- TH350 (Auto) 3 Speed |
| Trans Model | GM- TH375 (Auto) 3 Speed |
| Trans Model | GM- TH375B (Auto) 3 Speed |
| Trans Model | GM- TH400 (Auto) 3 Speed |
| Trans Model | GM- TH425 (Auto) 3 Speed |
| 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 |
| WARNING CA Proposition 65 | No |
| weight | 33.345 |
| width | 13.9 |
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