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B&M 20485 Torque Converter, Nitrous Holeshot 3800

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B&M 20485 Torque Converter, Nitrous Holeshot 3800
B&M

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#20020485

B&M 20485 Torque Converter, Nitrous Holeshot 3800

  • Specifically designed for the GM 1965 to 1991 TH400, TH425, TH375 and 1968 to 1981 TH350, TH375B (not TH350C) transmissions
  • Has a durable needle bearing between the stator and turbine
  • The higher stall speed provides quicker acceleration
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Stall Speed:

3500-3800

3200-35002800-32003400-3800

$675.95

/each

Factory Shipped

$731.95

Save $56.00


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Product Summary

TH350, TH400, 3500-3800 Stall Speed (RPM)

  • Specifically designed for the GM 1965 to 1991 TH400, TH425, TH375 and 1968 to 1981 TH350, TH375B (not TH350C) transmissions
  • Has a durable needle bearing between the stator and turbine
  • The higher stall speed provides quicker acceleration
  • Built with a furnace brazed impeller and turbine for added durability
  • The anti-balloon plates will allow these converters to stand up to the instant horsepower a nitrous plate system delivers
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Key Specs

MFG. Part #20485
BrandB&M
Stall Speed (RPM)3500-3800
See more specs

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B&M 20485 Details

B&M Nitrous HoleShot 3800 stall for GM 1965 to 1991 TH400, TH425, TH375 and 1968 to 1981 TH350, TH375B (not TH350C.) The Nitrous Holeshot 3800 stall converter is an excellent choice for vehicles with 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. Nitrous Holeshot converters feature furnace brazed impeller and turbine, new precision steel alloy pump drive tube, new heavy duty needle bearings between the stator and impeller (not a thrust washer) and needle bearings between the stator and turbine. Other features include dual pattern 10.75 and 11.50 inch drive lugs, a new turbine hub, new springs and rollers in the stator and anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower a nitrous plate system delivers. 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.

  • Needle Bearing Between Stator and Turbine
  • Higher Stall Speed, Quicker Acceleration
  • Furnace Brazed Impeller and Turbine
  • Steel Alloy Pump Drive Tube

Application

Fits vehicles with GM TH400, TH425, TH375 & TH350 Automatic Transmissions

Charts

B&M 20485 Specifications

KEY SPECS
MFG. Part #20485
BrandB&M
Stall Speed (RPM)3500-3800
GENERAL
Anti-Ballooning PlateYes
Bolt Circle Diameter10.75"
Crank Pilot Diameter1.71"
FlexPlate Bolt Circle10-3/4", 11-1/2"
Mounting Hardware IncludedNo
GTIN Code019695952952
Stall Speed3500-3800

Questions & Answers

1 Question • 1 Answer

I see where the converter is good for Nitrous but will it be ok for a blower application?

by Shane

• 8 years ago

1 answer

View Answer

1 of 1 questions shown

Fitment

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