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Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Ok guys tell me the pros and cons of a ZF swap

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Unread 07-13-2008, 02:33 PM   #1
Dmax5er
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Ok guys tell me the pros and cons of a ZF swap

I have a 93 YJ project going on right now, I have a truck close to me i can buy cheap, its a 93 f250 with a 6.9 diesel w/5 speed. i think its a zf s542 transmission but not sure maybe some can correct me on that. My question is since its cheap and i need a new trans and rearends in my project, can it be done fairly simple. keep in mind its cheap. and i am wanting to change my axles down the line and i will use these,
1-is the drop on the drivers side like my yj?
2-is there a kit or bell housing to bolt to my 4.0?
3-will it be too long for the YJ, is it shorter or longer than my ax15 np231?
I know 1 ton axles are better but these are tough too and its all i have, better than dana 35.....
Any helpful comments will be appreciated

I need to put up a pic of my jeep, i know you guys will like it,, im old school so i done a CJ conversion the right way, new paint and custom Renegade stripes. ill try to figure out how to upload soon.

picture attempt.




Last edited by Dmax5er; 07-13-2008 at 02:40 PM.. Reason: add pics
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Unread 07-13-2008, 02:53 PM   #2
pat8942
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The ZF is 9.5 inches longer than the AX-15 and since it's from a diesel the gear ratios might be all wrong for your gas motor.
The 6.9 bell housing is the same bolt pattern as the ford 289,302,351W and 460 engines.
Quote:
Originally Posted by Dmax5er View Post
I have a 93 YJ project going on right now, I have a truck close to me i can buy cheap, its a 93 f250 with a 6.9 diesel w/5 speed. i think its a zf s542 transmission but not sure maybe some can correct me on that. My question is since its cheap and i need a new trans and rearends in my project, can it be done fairly simple. keep in mind its cheap. and i am wanting to change my axles down the line and i will use these,
1-is the drop on the drivers side like my yj?
2-is there a kit or bell housing to bolt to my 4.0?
3-will it be too long for the YJ, is it shorter or longer than my ax15 np231?
I know 1 ton axles are better but these are tough too and its all i have, better than dana 35.....
Any helpful comments will be appreciated

I need to put up a pic of my jeep, i know you guys will like it,, im old school so i done a CJ conversion the right way, new paint and custom Renegade stripes. ill try to figure out how to upload soon.

picture attempt.

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Unread 07-13-2008, 03:13 PM   #3
Mean Max
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Quote:
Originally Posted by pat8942
The ZF is 9.5 inches longer than the AX-15
WOW! That would leave you with about a ten inch D/S?

Holy driveshaft angle Batman!
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Max has a picture of every Jeep part ever made.
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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

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Unread 07-13-2008, 04:00 PM   #4
Dmax5er
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Quote:
Originally Posted by Mean Max View Post
WOW! That would leave you with about a ten inch D/S?

Holy driveshaft angle Batman!
oooooh no, cant go that route, can you guys suggest a donor vehicle i can get axles, trans, and transfer case from. i need manual with hydraulic clutch.
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Unread 07-13-2008, 04:16 PM   #5
Mean Max
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Check out the "Knowledge" section of Novak Jeep Adapters and you'll see plenty of info regarding good & bad swap choices, and interchangability between engines/trannys/T-cases. Good info there!
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Quote:
Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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Unread 07-13-2008, 04:31 PM   #6
mean90yj
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like mean max said, on novak you can order a book, LOADED with information about the best swaps for a jeep. highly reccommend it if you are having trouble finding that perfect donor.
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Unread 07-13-2008, 06:47 PM   #7
Fiveology
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I don't know about the tranny other then it is big. On the axle end you could use the rear, but the front in a 93 F250 is the TTB Dana 50 (twin traction beam) design, not a solid axle. Now if it's a F350 then it will have a Dana 60 solid axle in the front. The rear in either should be a Ford/Sterling/Visteon 10.25". The 10.25" is plenty beefy for just about anything you could possibly fit under the hood.

That CJ front end looks sweet, very nicely done.
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Unread 07-13-2008, 06:50 PM   #8
Dmax5er
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Quote:
Originally Posted by Fiveology View Post
I don't know about the tranny other then it is big. On the axle end you could use the rear but the front in a 93 F250 is the TTB Dana 50 (twin traction beam) design, not a solid axle. Now if it's a F350 then it will have a Dana 60 solid axle in the front. The rear in either should be a Ford/Sterling/Visteon 10.25".

That CJ front end looks sweet, very nicely done.
it has leaf springs on the front, could it still have twin beam?
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Unread 07-13-2008, 06:52 PM   #9
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Yes, my brother had a ttb 50 with leaf springs.
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Unread 07-13-2008, 06:54 PM   #10
Fiveology
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Yup. F150s were coil sprung TTB, 250s were leaf sprung TTB, and 350s were leaf sprung solid axle. The F250 didn't get a solid front axle until the Super Dutys came out in 99.
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Unread 07-13-2008, 07:12 PM   #11
Dmax5er
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Quote:
Originally Posted by Fiveology View Post
Yup. F150s were coil sprung TTB, 250s were leaf sprung TTB, and 350s were leaf sprung solid axle. The F250 didn't get a solid front axle until the Super Dutys came out in 99.
OK , well scratch this idea...........thanks
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Unread 07-13-2008, 09:10 PM   #12
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your cj clip looks awesome ! I have a cj tailgate on mine and I'm currently working on swapping in the cj dash. I'd love to do the front clip as well but my fender flares would bolt on and I dont really feel like buyying another set at 400 bucks. I've seen some guys keep the yj fenders but I dont think it would fit right. you did some sweet work tho, did you paint it youreself ? Just need some round flares out back now
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Unread 07-13-2008, 09:22 PM   #13
Dmax5er
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Originally Posted by 93jeepyj View Post
your cj clip looks awesome ! I have a cj tailgate on mine and I'm currently working on swapping in the cj dash. I'd love to do the front clip as well but my fender flares would bolt on and I dont really feel like buyying another set at 400 bucks. I've seen some guys keep the yj fenders but I dont think it would fit right. you did some sweet work tho, did you paint it youreself ? Just need some round flares out back now
I done the work yes, ive done body work for 32 years. i have rear flares but i forgot to weld up the yj holes and it was too late after paint. I tried the grille and hood before i bought fenders, there was a thread on here about it and i tried it to the T. if you want to slop one together for rocks and trails i guess it'd be ok, but im real picky and i wanted mine to look good so i bought the whole front cap. and bought 3 row rad for yj and modified the grille to fit, you loose alittle bit of fan clearance for big ele fans, but the oem fan fits with about 1 " clearace. had to put on a 3" body lift and cut the front mount down to 1 1/4" to get all the body lines straight., im going to do the dash this winter., these tires are pretty big, i think im going to put on some bush wackers.............Im trying to descide what to do on the tranny right now. i have a 9" ford with detroit locker in it, but will have to buy axles for it, also have a 8.8 from an explorer with 3.73 posi, just cant figure out which one i want to put in it............thanks for the compliment.........
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