4L60-E Transmissions

4L60-E Product Specifications

Rebuilt Transmission Supply is a high volume low margin wholesale manufacturing company specializing in General Motors and Chevrolet truck, Van , Suv automatic transmissions.  Our philosophy is a committment to the customer by utilizing lean manufacturing techniques to continuously repeat automatic transmission rebuilds to factory specification repetitiously.  Our quality department bench tests each and every 4L60e and records results to ensure customer quality product and internal quality results for constant monitoring.  All Print specifications including Geometrical dimensional tolerances are met and measured using proper equipment such as micrometers, calipers, and CMM equipment.  Our Factory rebuilt automatic transmissions also are updated fully to improve performance and eliminate past problem areas.

Identification of 4L60-E Transmissions

4L60-E Transmissions are found in almost all GM rear-wheel-drive and 4 wheel drive models. The unit consists of a 1 piece and 2 piece case of a cast aluminum alloy, the main case, removable bell housing, and tail housing. It has a distinctive six bolt hex rear output assembly pattern, pinned flare and o-ring fittings to accommodate a cooling circuit and a square oil pan.

A factory claimed lifetime fill of 8.4 or 11.4 or 14 quarts of Dexron III Dextron V or Dexron VI fluid is required based on the oil pan size. The E-designation identifies the 4L60-E Transmission as being electronically controlled with a sensor located in the front pump assembly. Close attention must be paid when swapping parts for this unit due to compatibility issues with the sensor, formally known as the Input Shaft Speed Sensor.

The power and stamina of the 4L60-E have made it an extremely attractive aftermarket transmission and provides formidable power for both truck and performance autos.