The callahan 500 is what started it all for us! Our optimized stock 68RFE has tuneless modifications to the vavle body that increase the holding power and keep your Ram pulling. Whas inside? lets explore that, The heart of the transmission is the fluid pump and we machine the houseing and replace the vavles with oversized pressure regulator valve and vacumme test the pump. On our input drum we use OE single side frictions with added overdrive plates and new snap rings pushed by OE New pistons. In the center support we use all new clutches and a added snap ring for pertection for the 4c clutch all the planets are cleaned and inspected for loose pins and debris and replaced as needed. With new bushings this keeps everything moving as it should.
The vavle body gets disassemble and cleaned in our sonic cleaner then dressed up with upgraded metal accumilator pistons, Thicker accumilator plate, new solinoid switching vavles and the surface's are re machine to tighter tolerance to hold more pressure. Every 68RFE we rebuild gets a new solenoid pack.
When you throttle down your new Duel disk Billet cover converter will deliver the torque to pull. The instant throttle responce is from the billet cover converter that will not balloon under load.
There is no tuneing required for this transmission, we can walk you through how to test to see if you have transmission tuneing all ready installed.
Callahan 500 68RFE 2007-2024
Our 68RFE is not a stock unit, we have idenified the weak points that will bleed efficientcy. All of our transmissions are hand built in South Carolina with quality parts.