General Motors

GM 4L80E, Late Model Converter Most commonly used in… …2001 and newer GM medium duty trucks and vans Common failures include… …cracked lock-up piston and impeller […]

Allison 540/545 still popular among rebuilders Many members have problems with the Allison 540/545 converters. Do to the fact a great percentage of the cores are […]

General Motors 4T65 Most commonly used in… …1989 and newer GM vehicles   Common failures include… …clutch liners and bearing   Critical replacement parts… …are the […]

Allison 1000 torque converter cracks plague industry. The Allison 1000 torque converter is having its share of infield failures. Commonly found cracks around the mounting pads […]

Allisons gain popularity among converter rebuilders Impeller with a green tag. Note the number and angle of the primary fins and stator fins. Impeller is designated […]

245mm Lock-up GM 245 Most commonly used since 1981 in… GM TH-125C & later 4T440, Isuzu, Volvo & other rear wheel drives Most common areas of […]

245mm turbine interchangeability options The correct match between turbine and clutch; The correct match between turbine and clutch; The correct turbine hub to be used with […]

Common Information on the GM 350 Most commonly used in… …1969-1981 Chevrolets   Most common areas of concern should be… …loose impeller fins and bearing failure […]

280 mm Torque Converter 4.2 L I-6 Engine-GMT 360 280 mm torus used common parts with 300 mm. Cover stamping & Lug TCC(6 cylinder) existing part […]