Chevrolet Suburban
2000–06 2500
Factory gearing, tires, angles and brakes for the Suburban, 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.
Tire upgrades, worked out
2500 6.0 or 8.1 V8 (16-inch 8-lug), 3.73s, from LT245/75R16| Tire | Height | Under the diffs | Speedo at 65 | RPM at 65 | Gears for daily | Open |
|---|---|---|---|---|---|---|
| 265/75R16 | 31.6 in | +0.6 in | 63 mph | 1,931 | Keep 3.73s | Open → |
| 285/75R16 | 32.8 in | +1.2 in | 60 mph | 1,862 | 4.1 | Open → |
| 33x10.50R16 | 33.0 in | +1.3 in | 60 mph | 1,852 | 4.1 | Open → |
| 255/85R16 | 33.1 in | +1.3 in | 60 mph | 1,848 | 4.1 | Open → |
| 315/75R16 | 34.6 in | +2.1 in | 57 mph | 1,766 | 4.56 | Open → |
| 35x12.50R16 | 35.0 in | +2.3 in | 57 mph | 1,746 | 4.56 | Open → |
Stock turns 2,006 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.
Size
- Wheelbase
- 130 in
- Front overhang
- 38.4 in
- Rear overhang
- 50.9 in
- Height
- 76 in
- Body
- SUV
- Stock tires
- LT245/75R16
Transmissions and low range
- 4-speed automatic (4L60-E)
- 3.06 · 1.63 · 1 · 0.7
- 4-speed automatic (4L80-E)
- 2.48 · 1.48 · 1 · 0.75
- Low range, nv246
- 2.72:1
- Low range, nv263
- 2.72:1
Axles
- Front
- 1500: GM 8.25 in IFS; 2500: GM 9.25 in IFS
- Rear
- 1500: GM 8.6 in; 2500: GM 14-bolt 10.5 in full-float
- 3.73 ratio
- 2500 6.0 or 8.1 V8 (16-inch 8-lug)
- 4.1 ratio
- 2500 6.0 or 8.1 V8 (16-inch 8-lug)
- Ratios made for it
- 4.1 · 4.56 · 4.88
Brakes
- Front rotor
- 12.78 in, 325 mm
- Front caliper piston
- 57.0 mm
- Rear rotor
- 12.99 in, 330 mm
- Rear
- disc (vented, 330 x 29 mm)
Suspension
- Front
- double wishbone IFS, torsion bars
- Rear
- leaf springs, solid axle
- Rear layout
- Leaf springs
Fuel economy
- Highway, not EPA rated
- about 14 mpg
- Where it comes from
- Owner average, mixed driving (2002 2500HD 2WD 6.0 4L80E (pickup chassis, not Suburban, not 4x4))
- Source
- bobistheoilguy.com
Aftermarket bumpers
4 listedMakers 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 Suburban sees how it does on their tires and lift.
Front 2
Every calculator, set up for the Suburban
Source: auto-brochures.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.