Ford 8630

Ford 6.6L 6-cyl diesel

Bore × stroke

4.4 in × 4.4 in

Rated speed

2,200 rpm

Compression

15.6:1

Aspiration

turbocharged diesel

Cooling

liquid-cooled

Firing order

1-5-3-6-2-4

Funk Ultra Command: The Ford Ultra Command Powershift allows on-the-move shifting between gears, and shuttle shifting, without a clutch. A single lever controls the transmission; moving it to the left shifts down, to the right shifts up. Pushing forward increases forward throttle while pulling it back moves the tractor in reverse. An inching pedal is used for precise movements.

Dual Power - constant mesh: The Dual Power transmission provides a 'Powerdrive' low range to the basic constant mesh transmission. A foot switch next to the clutch is used to engage and disengage the mode, and may be switched while the tractor is in motion. A "rabbit" or "turtle" display light on the instrument panel indicates which mode the transmission is selected.

Constant mesh: Tranmission is operated with two levers and the clutch pedal. Left lever selects high, low, or the optional creeper range. Right lever selects one of four forward gears, or reverse. Tractor must be stopped to make gear or range changes.