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Jeep CJ-5
1980–83

Factory gearing, tires, angles and brakes for the CJ-5, 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
83.4 in wheelbase · 23.5 in front · 37.4 in rear overhang
in
Axle ratio2.73Factory
Crawl ratio28.8:1Best trim: Base 258 six (1980-81 tires) (H78-15 tires)
Angles45 · 19 · 30°Approach, breakover, departure
Clearance7.6 in6.9 to 7.6 in by trim
Highway mpg15Estimate, not EPA rated

Trims

5 we have figures for
TrimTireTransmissionAxleAnglesClearanceOpen
Base 151 four (1980-81 tires) (H78-15 tires)28.3Borg-Warner SR-4 4-speed manual, Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual—45 · 19 · 306.9 inUse →
Base 258 six (1980-81 tires) (H78-15 tires)28.3Borg-Warner SR-4 4-speed manual, Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual2.7345 · 19 · 306.9 inUse →
Base 258 six (1982-83 tires) (G78-15 tires)27.7Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual2.7345 · 19 · 307.6 inUse →
L78 Tracker option (1982) (L78-15 tires)28.9Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual2.7345* · 19 · 30*7.6 inUse →
P235/75R15 Wrangler radial option (1982)P235/75R15Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual2.7345* · 19 · 30*7.6 inUse →

* The maker doesn’t publish this figure for that trim, so it shows the closest trim’s (same tire where we have one), or a close relative’s that shares the same body or front end. Hover the star to see which.

Size

Wheelbase
83.4 in
Front overhang
23.5 in
Rear overhang
37.4 in
Height
69 in
Body
Short wheelbase SUV
Stock tires
27.7, 28.3, 28.9, P235/75R15

Transmissions and low range

Borg-Warner SR-4 4-speed manual (4-cyl ratios)
4.07 · 2.39 · 1.49 · 1
Borg-Warner SR-4 4-speed manual (6-cyl ratios)
3.5 · 2.21 · 1.43 · 1
Borg-Warner T-4 4-speed manual
4.03 · 2.37 · 1.5 · 1
Borg-Warner T-5 5-speed manual
4.03 · 2.37 · 1.5 · 1 · 0.86
Tremec T-176 4-speed manual
3.52 · 2.27 · 1.46 · 1
Low range, dana 300
2.62:1

Axles

Front
Dana 30 - unverified
Rear
AMC 20 - unverified
2.73 ratio
All trims

Brakes

Front rotor
11.79 in, 299 mm
Front caliper piston
66.0 mm
Rear drum
10.00 in, 254 mm
Rear
drum (10 x 1.75 in)

Suspension

Front
solid axle on leaf springs
Rear
leaf springs, solid axle
Rear layout
Leaf springs

Fuel economy

Highway, not EPA rated
about 15 mpg
Where it comes from
Owner average, 6 trucks, mixed driving (1980 CJ5 (mostly 258 4.2 six, 4-speed; one 151 four, one V8))

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 CJ-5 sees how it does on their tires and lift.

Front 10

Rear 7

Every calculator, set up for the CJ-5

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 CJ-5 ranks against every stock truck.See where it ranks

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.