3
/ RAM 2500/3500 HEAVY DUTY SPECIFICATIONS
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SPECIFICATIONS
2500/3500 Heavy Duty
TRANSMISSION: G56—MANUAL SIX-SPEED OVERDRIVE
Availability
Standard with 6.7-liter High-output Diesel
Description
Synchronized in all gears
Gear Ratios ( 6.7L Diesel)
1st
5.94
2nd
3.28
3rd
1.98
4th
1.31
5th
1.00
6th
0.74
Reverse
5.42
TRANSMISSION: 66RFE—AUTOMATIC SIX-SPEED
Availability
Standard with 5.7-liter engines on 2500 series models
Description
Three planetary gear sets, one overrunning clutch, full electronic control,
electronically controlled converter clutch
Gear Ratios
1st
3.231
2nd
1.837
3rd
1.41
4th
1
5
th
0.816
6
th
0.625
Reverse
4.444
Overall Top Gear
2.33 with 3.73 axle ratio; 2.56 with 4.10 axle ratio, 2.85 with 4.56 axle ratio
TRANSMISSION: 68RFE—AUTOMATIC SIX-SPEED
Availability
Optional with 6.7L Cummins Turbo Diesel engine
Description
Three planetary gear-sets, one overrunning clutch, full electronic control,
electronically controlled converter clutch
Gear Ratios
1st
3.231
2nd
1.837
3rd
1.41
4th
1
5
th
0.816
6
th
0.625
Reverse
4.444
Overall Top Gear
2.33 with 3.73 axle ratio; 2.56 with 4.10 axle ratio
