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Dodge Ram 2500 Power Wagon
2005–09

Factory gearing, tires, angles and brakes for the Ram 2500 Power Wagon, and what the usual upgrades do to it. Every number is from the maker's own figures unless the calculators say otherwise. A few figures here are still waiting on a factory document; the calculators mark them.

Use this truck in the calculators
140.5 in wheelbase · 39.4 in front · 47.8 in rear overhang
in
Stock tireLT285/70R1732.7 in tall
Axle ratio4.56Factory
Crawl ratio78.0:1Best trim: Quad Cab short box, 6-speed manual (2005-08)
Angles35 · 25.5 · 27.7°Approach, breakover, departure
Clearance8.3 inFactory figure
Highway mpg11Estimate, not EPA rated

Tire upgrades, worked out

Quad Cab short box, 5-speed auto, 4.56s, from LT285/70R17
TireHeightUnder the diffsSpeedo at 65RPM at 65Gears for dailyOpen
285/75R1733.8 in+0.6 in63 mph1,973Keep 4.56sOpen →
315/70R1734.4 in+0.8 in62 mph1,9434.88Open →
35x11.50R1735.0 in+1.1 in61 mph1,9074.88Open →
35x12.50R1735.0 in+1.1 in61 mph1,9074.88Open →
37x11.50R1737.0 in+2.1 in57 mph1,8045.13Open →
37x12.50R1737.0 in+2.1 in57 mph1,8045.13Open →

Stock turns 2,041 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.

Trims

3 we have figures for
TrimTireTransmissionAxleAnglesClearanceOpen
Quad Cab short box, 5-speed autoLT285/70R175-speed automatic4.5635 · 25.5 · 27.78.3 inUse →
Quad Cab short box, 6-speed manual (2005-08)LT285/70R176-speed manual4.5635 · 25.5 · 27.78.3 inUse →
Regular Cab long box (2005-08)LT285/70R175-speed automatic, 6-speed manual4.5635 · 25.5 · 27.78.3 inUse →

Size

Wheelbase
140.5 in
Front overhang
39.4 in
Rear overhang
47.8 in
Height
80 in
Body
Pickup
Stock tires
LT285/70R17

Transmissions and low range

5-speed automatic (545RFE)
3 · 1.67 · 1 · 0.75 · 0.67
6-speed manual (G56, 5.7L ratios)
6.29 · 3.48 · 2.1 · 1.38 · 1 · 0.79
Low range, nv271
2.72:1

Axles

Front
AAM 9.25 in solid front axle, Tru-Lok electric locker
Rear
AAM 11.5 in, Tru-Lok electric locker
4.56 ratio
All trims
Ratios made for it
4.56 · 4.88 · 5.13 · 5.38

Brakes

Front rotor
13.90 in, 353 mm
Front caliper piston
56.0 mm
Rear rotor
13.86 in, 352 mm
Rear
disc

Suspension

Front
4-link with track bar, coil springs
Rear
leaf springs, solid axle
Rear layout
Leaf springs

Fuel economy

Highway, not EPA rated
about 11 mpg
Where it comes from
Road test, average (mixed, never over 110 km/h (2005 Dodge Ram Power Wagon 5.7 HEMI)
As published
21.5 L/100km

Aftermarket bumpers

17 listed

Makers almost never publish angles, bottom heights or how far a bumper tucks, so these fill in as owners measure them. Measured yours? Add it on the rig page and every owner of this Ram 2500 Power Wagon sees how it does on their tires and lift.

Front 10

Rear 7

Every calculator, set up for the Ram 2500 Power Wagon

Tire sizeBigger tires: speedo, clearance, angles and brakes.Compare tiresRegearHighway RPM on every ratio and mpg.Pick your gearsCrawl ratioHow slow it creeps, against other trucks.Work out crawlSpeedometerWhat it really reads on new tires.Fix your speedoLinksAnti-squat and what a lift does to it.Check your linksYour rigBuild sheet and measured angles.Start a build sheetLeaderboardsWhere the Ram 2500 Power Wagon ranks against every stock truck.See where it ranks

Source: s3.amazonaws.com.

Use at your own risk. These calculators are here to help you plan and to inform your decisions, not to sign off on a build. Many numbers are estimates worked out from factory figures, and some factory figures are not yet confirmed. Check every number against your own truck, its manuals and a qualified shop before you buy parts, cut, weld, lift, regear or drive on it. Long Range Desert Tools is not liable for anything you do based on these calculators or their results. The full terms are in our policies.