B&M Torque Converter, Holeshot, 1965-91 GM TH400, 1968-81 TH350, 2300-2500 RPM Stall, 10.75in. Bolt Circle, Each (BM20412)

BM20412 - TH350 400 HOLESHOT 2400

GM TH-350, TH-400, TH-425 & TH-375, Mild To Serious Performance Applications

Part Number: BM20412

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.
2300- 2500 rpm stall speed.
Mild to Serious Performance Applications.
Small & Big Blocks.
GM TH-350, TH-400, TH-425 & TH-375, TH-375B, will not fit TH-375C
Furnace brazed impeller.
New precision steel alloy pump drive tube.
New heavy duty needle bearing between stator & impeller (not a thrust washer).
Needle bearing between stator & turbine.
Furnace brazed turbine.
Requires a small (10-3/4") bolt circle flexplate or dual pattern flexplate..
New turbine hub.
New springs and rollers in stator.