LRDT Long Range Desert ToolsLRDT
Apply

Jeep Scrambler
CJ-8, 1981–86

Factory gearing, tires, angles and brakes for the Scrambler, 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
103.4 in wheelbase · 23.5 in front · 50.3 in rear overhang
in
Axle ratio2.73Factory
Crawl ratio28.8:1Best trim: Base (1982 tires) (G78-15 tires)
Angles43 · 18 · 18°Approach, breakover, departure
Clearance7.6 inFactory figure
Highway mpg18EPA, 19 with the manual

Trims

4 we have figures for
TrimTireTransmissionAxleAnglesClearanceOpen
Base (1982 tires) (G78-15 tires)27.7Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual, Chrysler TorqueFlite 904 3-speed automatic, Chrysler TorqueFlite 999 3-speed automatic2.7343 · 18 · 187.6 inUse →
SR Sport (L78 Tracker P/G) (L78-15 tires)28.9Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual, Chrysler TorqueFlite 904 3-speed automatic, Chrysler TorqueFlite 999 3-speed automatic2.7343 · 18 · 187.6 inUse →
Base (1984-86 tires)P205/75R15Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual, Chrysler TorqueFlite 904 3-speed automatic, Chrysler TorqueFlite 999 3-speed automatic2.7343 · 18 · 187.6 inUse →
SL Sport / Laredo with P235/75R15P235/75R15Borg-Warner T-4 4-speed manual, Borg-Warner T-5 5-speed manual, Tremec T-176 4-speed manual, Chrysler TorqueFlite 904 3-speed automatic, Chrysler TorqueFlite 999 3-speed automatic2.7343 · 18 · 187.6 inUse →

Size

Wheelbase
103.4 in
Front overhang
23.5 in
Rear overhang
50.3 in
Height
69 in
Body
SUV
Stock tires
27.7, 28.9, P205/75R15, P235/75R15

Transmissions and low range

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
Chrysler TorqueFlite 904 3-speed automatic (4-cyl)
2.45 · 1.45 · 1
Chrysler TorqueFlite 999 3-speed automatic (6-cyl)
2.74 · 1.55 · 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

EPA highway, automatic
18 mpg
EPA highway, manual
19 mpg
Rated years
1984–1986, 4WD

Aftermarket bumpers

16 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 Scrambler sees how it does on their tires and lift.

Front 10

Rear 6

Every calculator, set up for the Scrambler

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 Scrambler 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.