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84-86 Specs
Roll-on Paint Job
Hinge Issues
Tailight Mod
Headlight Mod
Front Bumper Fab
Rear Bumper Fab
Roof Rack Fab
Bedliner Application
Engine Rebuild 2.8
Engine Rebuild 350/5.7
Speedo Gears
Clutch Slave Door
Steering Box Swap
V8 Engine Swap
Electronics
Axles
Longarm Fab
Notes
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These Specs are specific to the 1984 thru 1986 XJ Models

Engines
GM 2.8L V6 - 115 hp @ 4800 rpm, 145 ft lb @ 2400 rpm - used in 84-86
AMC 2.5L Inline 4 carburated - 105 hp @ 5000 rpm, 132 ft lb torque @ 2800 rpm - used in 84-85 models
2.5L Inline 4 TBI (fuel injected) - 117 hp @ 5000 rpm, 135 ftlb @ 3500 rpm - used in 86-90
Renault 2.1L 4cyl. Turbo Diesel - 85 hp @ 3750 rpm, 132 ft lb @ 2750 rpm - used in 85-87

Manual Transmissions
AX4 - 4 speed manual - manufactured by Aisin - used 84-86 with 2.5L I4 and 2.8L V6 engines
T4 & T5 - 4 & 5 speed manual - manufactured by Borg Warner - used 84-86 with 2.5L I4 and 2.8L V6 engines
BA10/5 - 5 speed manual - manufactured by Peugot - used only up to 89
AX5 - 5 speed manual - manufactured by Aisin - used with 2.8L V6 and 87+ with 2.5L I4

Automatic Transmissions
Torqueflight 904 - 3 speed automatic - used 84-86 with 2.8L V6 and 2.5L I4 engines
30RH - 3 speed automatic - used with 2.5L I4 engine

Transfer Cases
All the transfer cases used are all chain driven with aluminum housings. All Transfer Cases for these years were made by the "New Process" company.

NP207 - "Command-Trac" part-time only - 2.61:1 ratio low range - used 84-87
NP228/NP229 - "Selec-Trac" - 4Hi(full-time) - N - 4Lo (part-time) - used 84-87

Driveshafts
Front Driveshaft - On 84-87 XJs (NP207 t-case) the front shaft is a "GKN" style shaft.

Rear Driveshaft - The rear is a one-piece shaft with standard u-joints at both ends. The slip yoke is located on the output shaft of the transfer case. On 84-95 models, the yoke slides in and out of the transfer case and is lubricated by the ATF fluid internally.

Front Axles
Dana 30 high pinion - reverse cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear - used 84-99 (some axles through 91 are vacuum disconnect, all have 5-260x u-joints)

Rear Axles
Dana 35 non c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 84-89

Note: Dana 35 axles sometimes referred to as Dana 35C - The "C" does not stand for c-clip. It stands for "custom" meaning it came from Dana unfinished.

Gearing
3.31 - only available on older (pre87?) 2 door XJs with "Fuel Economy" package
3.73 - found in some XJs with the towing package
4.10 - used with 2.5L engine usually, and older XJs with the "Off-Highway Vehicle" package.

Cooling Systems
Open style - All 84 thru 86 XJ'x have the preferred Open Cooling System.

Production Numbers
Number of XJ's built in given year:

1984 - 93,326
1985 - 120,328
1986 - 107,225

Trim Levels
84 - Base, Wagoneer, Pioneer, Chief
85 - Base, Wagoneer, Pioneer, Chief, Laredo
86 - Base, Wagoneer, Pioneer, Chief, Laredo

Decoding XJ VIN Numbers