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The C4 was designed to be a lighter and simpler replacement for the original Ford-O-Matic two speed transmission being used in smaller, less powerful cars. Ford used the term "SelectShift" because in the first C4's, placing the gear selector in D2 forced the transmission to start in second gear and then shift to third gear.
In drag racing, a transbrake is a mechanism that selectively places the transmission in a forward and reverse gear simultaneously. This allows the engine to create full power without transmitting that power through the driveline, allowing the car to stay in one place.
A transmission solenoid or cylinoid is an electro-hydraulic valve that controls fluid flow into and throughout an automatic transmission. Solenoids can be normally open or normally closed. They operate via a voltage or current supplied by the transmission computer or controller.
1964–1981 C4. Most small block V8 powered cars of the 1960s and 1970s in the North American market; 1966–1996 C6. Most big-block V8 powered cars/trucks of the 1960s and 1970s in the North American market, All Fseries trucks without O/D, 80 thru 96 (97 For F250HD, F350, and F-Superduty models) 1974–1989 C3—Light-duty, smaller than the C4
The delay box acts as an on-board timer for the transbrake (from transmission brake). A transbrake is a part of a racing automatic transmission used in drag racing, and are not found in manual transmissions. The electronic timer is packaged in a metal enclosure when sold to drag racers, thus the slang term delay box.
A parking pawl is a device fitted to a motor vehicle's automatic transmission that locks up the transmission when the transmission shift lever selector is placed in the Park position.
A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations.
ZF introduced the S6-650 in 1998 on the Ford Super Duty. GM started using the ZF S6-650 in 2001 with some alterations, making this transmission different from the Ford version.