78 4 door cherokee questions

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Topic author
9.3x62
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Joined: Mon Dec 19, 2022 9:12 pm

78 4 door cherokee questions

Post by 9.3x62 »

Howdy, jeepers,
I have chance at a 1978 4 door Cherk with stick shift. The seller says it's got a 360, so I imagine that'd be in front of a t18 and dana 20, right? Anyway, my question is whether it'd be more likely to have 3.07, 3.54, or (please, oh, please) 3.73 diff gears? Thanks in advance!
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tgreese
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Re: 78 4 door cherokee questions

Post by tgreese »

Could be a T-15 three-speed with a 2V 360. Or a T-18. Yes Dana 20.

The '78 TSM is here https://oljeep.com/edge_parts_man.html and will show you the standard and optional ratios. Maybe 3.54 not 3.73 likely 3.07 if I had to guess.

Way more info in the TSM than any thread here could have.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
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Topic author
9.3x62
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Joined: Mon Dec 19, 2022 9:12 pm

Re: 78 4 door cherokee questions

Post by 9.3x62 »

Bummer, yeah, probably 3.07s, makes sense. Thanks for the link!

Srdayflyer
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Re: 78 4 door cherokee questions

Post by Srdayflyer »

3.73's would be and aftermarket install, Check to see if the rear axel vent tube is installed, its between the pumpkin and brake backing plate on the drivers side, mine was missing and the pumpkin was completely trashed out along with all the axel bearings, so i was forced into a front and rear gear swap with 3:73s, and eaton trutrac posi's just so you dont have any surprises, a 4dr cherokee would be a nice catch, 1 draw back a 4 door reseal will run you about 1500-2 k for just the door and window seals. mine were hard as a rock and everything rattled like hell till i replaced all the seals but it would be a great buy
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Stuka
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Re: 78 4 door cherokee questions

Post by Stuka »

Personally, I have never seen a manual trans 70's wagon with 3.07s. They have all been 3.54s. I am sure they exist, just not sure how common they were.
2017 JKU Rubicon
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ

Topic author
9.3x62
Posts: 49
Joined: Mon Dec 19, 2022 9:12 pm

Re: 78 4 door cherokee questions

Post by 9.3x62 »

Thanks, Stuka, that's what I wanna hear!
Too bad the thing is 5 hours away and the seller can't communicate worth a dime. I seriously wanna land this thing.

Topic author
9.3x62
Posts: 49
Joined: Mon Dec 19, 2022 9:12 pm

Re: 78 4 door cherokee questions

Post by 9.3x62 »

Srdayflyer, I already have a dead 79 QT wag, but the door seals are still soft. I was surprised at that, myself.
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