Our best selling street torque converter for decades! Part number GM25 is our 12-inch Street Master torque converter for TH350 and TH400 transmissions.
Featuring an advertised stall speed rating of 2,500 RPM, this torque converter is ideally suited for regular street use, highway use, general performance use, and even daily driving!
Features a 3 x 10.75-inch bolt pattern, M10x1.5mm mounting threads, and rated for use with up to 500 flywheel horsepower.
Typically provides 2,100 - 2,300 RPM of actual max flash stall speed with a mild small block engine, and 2,400 - 2,600 RPM of actual max flash stall speed with a mild big block engine.
As with any torque converter, this model will provide a range of stall speed based on the load it is subjected to. Vehicle weight, rear gear ratio, rear tire height, and engine torque output all play a critical role in how much stall speed a torque converter will provide.
**Advertised stall speed ratings are NOT fixed ratings and are NOT footbrake stall speed ratings!**