Elk Grove Dodge Chrysler Jeep RAM
Elk Grove Dodge Chrysler Jeep Ram · Ram Chassis Cab Research
A chassis cab is half a truck until the body goes on. This guide covers the measurements a body builder asks for first, how cab-to-axle length lines up with common body types, and the factory PTO, wiring and power features that make the upfit cleaner.
Cab-to-axle (CA) length is measured from the back of the cab to the centerline of the rear axle. It's the number body builders use to size a body, and it sets the wheelbase.
| Model and cab | CA | Wheelbase | Overall length | Rear frame to ground |
|---|---|---|---|---|
| 3500 Regular Cab SRW | 60 in | 143.3 in | 235.3 in | 36.3 in |
| 3500 Regular Cab DRW | 60 in | 143.5 in | 235.3 in | 35.9 in |
| 3500 Regular Cab DRW | 84 in | 167.3 in | 259.3 in | 34.9 in |
| 3500 Crew Cab SRW | 60 in | 172.2 in | 264.2 in | 35.7 in |
| 3500 Crew Cab DRW | 60 in | 172.4 in | 264.2 in | 34.3 in |
| 4500/5500 Regular Cab | 60 in | 144.6 in | 236.3 in | 36.4 in |
| 4500/5500 Regular Cab | 84 in | 168.7 in | 260.2 in | 36.2 in |
| 4500/5500 Regular Cab | 108 in | 192.6 in | 284.3 in | 36.9 in |
| 4500/5500 Regular Cab | 120 in | 204.4 in | 296.3 in | 36.6 in |
| 4500/5500 Crew Cab | 60 in | 173.5 in | 265.2 in | 35.5 in |
| 4500/5500 Crew Cab | 84 in | 197.5 in | 289.2 in | 36.7 in |
Ram counts two cabs, four CA lengths and nine wheelbases across the line. The 3500 84 CA is dual rear wheel only, and there is no Mega Cab chassis cab. Regular Cab seats 3 and Crew Cab seats 6. Overall width is 82.6 in on a 3500 SRW, 92.2 in on a 3500 DRW and 93.2 in on a 4500 or 5500.
| CA | Offered on | Typical fit |
|---|---|---|
| 60 in | 3500, 4500, 5500; Regular or Crew Cab | Shorter flatbeds and service bodies |
| 84 in | 3500 Regular Cab DRW; 4500/5500 Regular or Crew Cab | Mid-length bodies when 60 CA is too short |
| 108 in | 4500/5500 Regular Cab | Longer bodies such as stake beds and larger dump bodies |
| 120 in | 4500/5500 Regular Cab | Bodies that need the full 120-in CA |
These are general starting points, not a fit guarantee. Body length, overhang behind the rear axle and where the body's weight sits all affect handling and axle loads, so your body builder should confirm the match. Ram publishes a Body Builder's Guide for upfitters with dimension drawings, weight charts showing maximum upfit, cargo and trailer weights, modification guides and VSIM wiring schematics. A chassis cab can't take a pickup bed; Ram says the straight rails and CA lengths call for a flatbed, utility or custom body.
Snowplow prep is standard on the 3500 and available on the 4500 and 5500, which also offer a 7,250-lb front axle rating for heavy front loads.
| Gas PTO (HEMI) | PTO 6 diesel (Cummins) | |
|---|---|---|
| Requires | TorqueFlite HD (standard on 4500/5500; optional on 3500) | 6.7L Cummins (packaged) |
| Left- or right-side PTO | Yes | Yes |
| Split-shaft PTO | No | Yes, two speeds, stationary or in motion |
| Stationary elevated idle | Yes | Yes |
| Hard-wired remote start/stop | Yes | Yes |
PTO works on 4x2 and 4x4 trucks. A 3500 HEMI with the standard 8HP75 transmission can't have PTO, so spec the TorqueFlite HD if a dump hoist, crane or hydraulic pump is in the plan. On trucks with PTO, the sixth auxiliary switch on the dash becomes the PTO switch.
The new Night Edition package adds black wheels, black badging and a sport performance hood on Big Horn trucks. Orders open in Q4 2026, with availability later. Need a van-based body instead? Compare the ProMaster Cutaway. For fleets in the Sacramento area timing an order, see our year-end planning guide.
Regular Cab comes in 60, 84, 108 or 120-in CA and Crew Cab in 60 or 84-in CA. The 3500 is limited to 60 and 84 CA, and the 3500 84 CA is dual rear wheel only.
34 in on the 3500, 4500 and 5500, with a flat-top C-channel rear frame and pre-drilled mounting holes.
Shorter dump bodies can fit a 60 or 84 CA, while larger dump bodies and stake beds generally call for a 108 or 120 CA on a 4500 or 5500. Your body builder should confirm the fit and the axle loads.
Yes, with the 6.7L Cummins. The PTO 6 diesel package adds split-shaft PTO with two speeds, stationary or in motion, plus elevated idle and hard-wired remote start/stop.
Yes, with the TorqueFlite HD transmission, which is standard on the 4500 and 5500 and optional on the 3500. Gas PTO includes left- or right-side PTO, elevated idle and remote start/stop, but not split-shaft.
The Vehicle System Interface Module, standard on every Ram chassis cab. It gives the upfitter access to more than 70 inputs and outputs, including lighting and PTO controls.
Orders open in Q4 2026, with availability later. It requires Big Horn Level 1, 2 or 3 on a 3500, 4500 or 5500 Regular or Crew Cab.
Elk Grove Dodge Chrysler Jeep Ram · 8575 Laguna Grove Dr, Elk Grove, CA 95757 · Sales 916-892-0515
*Specifications are based on Ram's 2027 Ram 3500/4500/5500 Chassis Cab information as published in September 2026 and may change. Where Ram's published figures differ, the more conservative figure is shown. Max towing, payload, GVWR and GCWR require proper equipment and apply to specific configurations; ratings assume a base truck plus a 150-lb driver, and body, upfit equipment, passengers and cargo reduce available payload and towing capacity. Confirm ratings on the door-jamb label of a specific truck and with your body builder. Pricing on in-stock vehicles excludes government fees and taxes, any finance charges, dealer document processing charge and emission testing charge. Contact Elk Grove Dodge Chrysler Jeep Ram for current pricing and availability.