B&M Holeshot 3600 Torque Converter, 1965-91 GM TH400, 1968-81 TH350

$1,600.00
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Part
B&M 20425
10.75 and 11.50-inch bolt circle. 3400-3800 RPM stall

This HoleShot 3600 fits 1965-91 GM TH400, 425, 375 and 1968-81 TH350, 375B (not 350C.) Holeshot torque converters 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 3600 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. Features both 10.75 and 11.50-inch bolt circle.

B&M Holeshot 3600 Torque Converter, 1965-91 GM TH400, 1968-81 TH350 Features

  • Precision Balanced on Certified Balance Equipment
  • Copper Furnace Brazed Impeller and Turbine
  • New Precision Alloy Steel Impeller Hub
  • Race Proven Technology & Quality
More Information
PartB&M 20425
Manufacturer Part Number20425
BrandB&M
Bolt Circle Diameter (in)10.75
Emission Code5
MaterialSteel
Part TypeAutomatic Transmission Torque Converter
Stall Torque Ratio3400 to 3800 RPM stall
Typeproduct

Material
Steel
Product Type
Automatic Transmission Torque Converter
Transmission
["TH350", "TH375", "TH375B", "TH400", "TH425"]
Emission Code
5
Furnace Brazed
Yes
Stall Torque Ratio
3400 to 3800 RPM stall
Additional Contents
New needle bearings
Automotive Item Grade
High Performance
Flexplate Change Needed
Yes
Bolt Circle Diameter (In)
10.75
California Proposition 65 Required
No

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