Chevrolet Silverado 1500
K2XX, 2014–18
Factory gearing, tires, angles and brakes for the Silverado 1500, 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
WT 4x4 (4.3 V6), 3.23s, from P255/70R17| Tire | Height | Under the diffs | Speedo at 65 | RPM at 65 | Gears for daily | Open |
|---|---|---|---|---|---|---|
| 265/70R17 | 31.6 in | +0.3 in | 64 mph | 1,496 | Keep 3.23s | Open → |
| 285/70R17 | 32.7 in | +0.8 in | 62 mph | 1,446 | 3.73 | Open → |
| 33x10.50R17 | 33.0 in | +1.0 in | 61 mph | 1,433 | 3.73 | Open → |
| 33x12.50R17 | 33.0 in | +1.0 in | 61 mph | 1,433 | 3.73 | Open → |
| 255/80R17 | 33.1 in | +1.0 in | 61 mph | 1,430 | 3.73 | Open → |
| 285/75R17 | 33.8 in | +1.4 in | 60 mph | 1,398 | 3.73 | Open → |
| 315/70R17 | 34.4 in | +1.7 in | 59 mph | 1,376 | 3.73 | Open → |
| 35x11.50R17 | 35.0 in | +2.0 in | 58 mph | 1,351 | 3.73 | Open → |
| 35x12.50R17 | 35.0 in | +2.0 in | 58 mph | 1,351 | 3.73 | Open → |
| 37x11.50R17 | 37.0 in | +3.0 in | 55 mph | 1,278 | 4.1 | Open → |
| 37x12.50R17 | 37.0 in | +3.0 in | 55 mph | 1,278 | 4.1 | Open → |
Stock turns 1,523 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.
Trims
3 we have figures for| Trim | Tire | Transmission | Axle | Angles | Clearance | Open |
|---|---|---|---|---|---|---|
| WT 4x4 (4.3 V6) | P255/70R17 | Hydra-matic 6L80 6-speed automatic | 3.23 / 3.42 | 17.9 · 19 · 23.1 | 9.0 in | Use → |
| LT Z71 (5.3 V8, 6-speed) | P265/65R18 | Hydra-matic 6L80 6-speed automatic | 3.08 / 3.42 / 3.73 | 17.9 · 19 · 23.3 | 8.9 in | Use → |
| LTZ / High Country (5.3 8-speed or 6.2 V8) | P275/55R20 | Hydra-matic 8L90 8-speed automatic | 3.23 / 3.42 | 18 · 19 · 23.2 | 9.0 in | Use → |
Size
- Wheelbase
- 143.5 in
- Front overhang
- 39.37 in
- Rear overhang
- 42.5 in
- Height
- 76 in
- Body
- Pickup
- Stock tires
- P255/70R17, P265/65R18, P275/55R20
Transmissions and low range
- Hydra-matic 6L80 6-speed automatic
- 4.03 · 2.36 · 1.53 · 1.15 · 0.85 · 0.67
- Hydra-matic 8L90 8-speed automatic
- 4.56 · 2.97 · 2.08 · 1.69 · 1.27 · 1 · 0.85 · 0.65
- Low range, autotrac
- 2.72:1
Axles
- Front
- GM 8.25 in IFS
- Rear
- GM 9.5 in (5.3/6.2) or 8.6 in (4.3)
- 3.08 ratio
- LT Z71 (5.3 V8, 6-speed)
- 3.23 ratio
- WT 4x4 (4.3 V6), LTZ / High Country (5.3 8-speed or 6.2 V8)
- 3.42 ratio
- WT 4x4 (4.3 V6), LT Z71 (5.3 V8, 6-speed), LTZ / High Country (5.3 8-speed or 6.2 V8)
- 3.73 ratio
- LT Z71 (5.3 V8, 6-speed)
- Ratios made for it
- 3.73 · 4.1 · 4.56
Brakes
- Front rotor
- 12.99 in, 330 mm
- Front caliper piston
- 51.0 mm
- Rear rotor
- 13.58 in, 345 mm
- Rear
- disc (vented, 345 x 20 mm)
Suspension
- Front
- double wishbone IFS (torsion bars through 2006, coilovers after)
- Rear
- leaf springs, solid axle
- Rear layout
- Leaf springs
Fuel economy
- EPA highway
- 22 mpg
- Rated years
- 2014–2018, 4WD
Brake upgrades
What bigger tires need →- Brembo 6-piston front brake kit (accessory, 410 mm rotors)+29% brake torque13.0 → 16.1 in rotor · 6-pistonNot checked.
- Baer 6T front brake kit 4301682B-2 (GM 1500 trucks 1999-on, SUVs 2000-on)+5% brake torque13.0 → 13.5 in rotor · 6-piston · 17 in wheels or bigger · $1,900Baer list price (black calipers).
Aftermarket bumpers
13 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 Silverado 1500 sees how it does on their tires and lift.
Front 7
- Body Armor 4x4 2016-2018 Chevrolet Silverado 1500 Eco Series Front Bumper$1,000
- Chassis Unlimited 2014-2015 Chevrolet Silverado 1500 Octane Front Winch Bumper$1,907 · winch ready
- Chassis Unlimited 2016-2018 Chevrolet Silverado 1500 Octane Front Winch Bumper$1,907 · winch ready
- Fab Fours CS16-R3861-1 Chevy Silverado 1500 2016-2018 Black Steel Elite Front Bumper No Guard with Tow Hooks$1,850 · winch ready
- Fishbone Offroad Rockfish Front Bumper for 2016-2018 Chevy Silverado FB22388$1,000
- Iron Bull Bumpers 2016-2018 Chevrolet Silverado 1500 Front Bumper | Parking Sensor Cutouts Available$1,700
- Throttle Down Kustoms 2016-2018 Chevrolet Silverado 1500 PreRunner Bumper$1,775
Rear 6
- Body Armor 4x4 2007-2018 Chevrolet SILVERADO/GMC Sierra 1500 Eco Series Rear Bumper$1,000
- DV8 Offroad 2014-2018 Chevy Silverado 1500 Steel Rear Bumper$584
- Fab Fours CS14-T3150-1 GMC Sierra 1500 2014-2018 Black Steel Rear Bumper$1,121
- Fishbone Offroad Rockfish Rear Bumper for 2014-2018 Chevy Silverado FB22451$700
- Iron Bull Bumpers 2014-2018 Chevrolet Silverado 1500 Rear Bumper | Parking Sensor Cutouts Available$1,550 · winch ready
- Throttle Down Kustoms 2016-2018 Chevrolet Silverado 1500 Rear Bumper$1,250
Every calculator, set up for the Silverado 1500
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.