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Thread: 302 Swap and Tranny Question

  1. #1
    Registered Kooters's Avatar
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    Default 302 Swap and Tranny Question

    For those of you who have swapped in a 302, what tranny/transfer case did you pick and why?

    Autos are out, must be a manual.


    I'm currently considering either the AX-15 or the NP-435. I'd prefer a 5spd tranny vs. a 4spd with a granny low 1st. My jeep will see a fair amount of highway driving. I plan on keeping 4.10's.

    Anything else to lookout for? I'm going with a 91 302HO btw.


    94 YJ
    5.0HO V8
    SOA
    35's
    Lots of other stuff...

  2. #2
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    Here's another bit of my thought process. If I were to go with the 435, I would see what i could do to move everything as far forward as possible so I could run a doubler of some kind, maybe two 231's or some other combination.


    94 YJ
    5.0HO V8
    SOA
    35's
    Lots of other stuff...

  3. #3

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    well i went with the AOD and BW 1345 setup.. i pulled it out of a 86 bronco.. it just depends on what your donor car is .. And i know you said no auto but its well worth it for highway driving... just my 2 cents
    '88 YJ Powered by a Ford 302, Ford AOD tranny, Borg-Warner 13-45 TransferCase.. 30/8.8 33x12.50x15 Trailmasters

  4. #4

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    http://www.novak-adapt.com/knowledge...ge_gateway.htm you have probably seen this already but its worth mentioning. t18's are cheap and plentiful
    87 YJ with stuff. 2.5l ax5 207 30/35 junk, 33s 4"lift
    my jeep thread
    06 ZX6R with alotta stuff
    an old beatup chopper
    ><((((º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><((((º>
    `·.¸.·´¯`·...¸><((((º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><((( (º>
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  5. #5
    Registered Kooters's Avatar
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    Thats a fantastic website with a ton of great info.


    94 YJ
    5.0HO V8
    SOA
    35's
    Lots of other stuff...

  6. #6
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    A 302 and a doubler? I forsee bent metal...

    awesome.

  7. #7

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    I have been researching doing the same swap with an AOD. I have an 89 5.0 and AOD out of a mustang that I bought for another project, I am thinking about swapping it in the jeep, I called advance adapters, and they said they can adapt there atlas transfer case to either the AOD or the tf 999 which I have now so I have been planning on first getting the atlas and putting it in and later swapping in the 5.0 kind of spread out the cost and down time that way.
    95 yj originally 2.5 with auto tranny
    4.0 from 97 cherokee
    32RH transmission
    1 inch body lift
    bushwacker flares
    xj dana 44 rear axle
    4X4 posi lock in front dana 30 but plan to swap in a wagoneer dana 44 I just bought
    Just bought R.E. lift 2.5 inch
    currently 31 10.5 but will upgrade to 33,s when lift is installed

  8. #8
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    I'm working on a 5.0 swap with an NP435 Manual. I'm sure I would prefer an auto, but I already owned the transmission and transfer cases
    5.0 4 speed 69 F100, 38's, Dana 44/Ford 9" 4.10's, winched

    7.5 auto 78 F250, 285's, Dana 60/Sterling 10.25" 4.56's, with camper

    2.5 5 spd 90 YJ, 30's, Dana 30/35 4.10's, open diff, soft top

    4.0 auto 91 XJ, 33's Dana 30/44 4.10's, spooled, winched

    5.0 4 speed 92 YJ, 38's, Dana 44/Ford 9" 4.88's, locked, winched, caged

  9. #9

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    Grab a c4 (small) or a c6 (BOMB proof) and run the auto. You will not regret it.

    WE run a 302/c4/atlass in our buggy and it is a sweet setup
    1990 YJ Stroked and Bored. 3.5"BDS rear, SOA front w/ waggy springs, 2" Bl, 1"MM, DozerDanRockRails, DD gas tank skid, Custom D60 front, Yota Rear, 4.56's, locked F/R, TJ flares, 35" MTR's

    1992 XJ 2 door $46 in scrap
    2007 AWMS Chassis- Under way. 60/14b 37's twin turbo'd 302, t5, d300 Go faassssst.

    Spotter Team 818, AdventureWorks Motorsports
    WE Rock, RC Rocks, XRRA, ORCA

    Team 818a KOH quailifier
    Thanks to NJXOR, EMS Offroad, Jeff's Auto body and Recycling

    www.awmotorsports.com

  10. #10
    YJ ***** Slut wallysheata's Avatar
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    Quote Originally Posted by 5.0lyj View Post
    well i went with the AOD and BW 1345 setup.. i pulled it out of a 86 bronco.. it just depends on what your donor car is .. And i know you said no auto but its well worth it for highway driving... just my 2 cents
    Sorry not to hijack but hows your AOD holding up, i've got a freshly rebuilt C6 that i'm about to put behind a rebuilt bronco 302 but would very much prefer an overdrive
    Old Rig - 1 Ton YJ on 40's
    New Rig - 1 Ton 6.0L TJ-7 BuggyWife's Rig - 1/2 ton YJ on 37's
    2002 7.3L F350 CC LB 6sp SRW 4x4 Tow Rig

  11. #11
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    I'm not opposed to the C6 but my concern is that its so long. In a YJ with stock wheelbase, I'm concerned that the drive train will be so long that I'll end up with a super short rear drive shaft and a pinion angle that is outrageous. I'd like to keep the rear drive shaft as close to its current length as possible.


    94 YJ
    5.0HO V8
    SOA
    35's
    Lots of other stuff...

  12. #12
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    The ford manual transmission assembly doesnt end up any shorter due to the ridiculous length of the output shaft and transmission to t-case adapter

    I have my 93 mustang 5.0 as far forward as possible, I think I have 2" between the fan and radiator, and even then, with a stock adapter from transmission to the NP203, the custom adapter from the NP203 rangebox to the NP205, I was ending up with around 12 inches for rear driveshaft, even a high angle CV shaft was going to be at its limit.

    For the moment, I'll be using only the NP205, until I can get a 2wd transmission output shaft shortened and resplined and a custom short adapter between the transmission and first t-case.

    I'm getting to the end of my swap. got my clutch working earlier in the week using all the stock Ford parts, clutch master and slave and hydraulic line. Just swapped headers today to a set that clear the clutch slave. Swapped a stock YJ power steering pump onto the mustang motor with fabricated brackets to keep the belt tensioner in the same place.

    Tomorrow I'll get the fuel lines and wiring done. Should be ready to run by mid week. Soon as my rear axleshafts get here it should be driveable, whohoo.
    5.0 4 speed 69 F100, 38's, Dana 44/Ford 9" 4.10's, winched

    7.5 auto 78 F250, 285's, Dana 60/Sterling 10.25" 4.56's, with camper

    2.5 5 spd 90 YJ, 30's, Dana 30/35 4.10's, open diff, soft top

    4.0 auto 91 XJ, 33's Dana 30/44 4.10's, spooled, winched

    5.0 4 speed 92 YJ, 38's, Dana 44/Ford 9" 4.88's, locked, winched, caged

  13. #13
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    As more of a Ford guy, I would probably say not to go with an AOD. C4 if you want an automatic is probably the way to go...
    2000 Wrangler Sport TJ
    4.0, 5 speed, 4x4
    2" lift, 31" tires, other than that pretty much stock, not for long. Looking to do some performance mods. If anybody has a 62mm TB spacer, grill guard, winch + mounting plate, electric fan, any and all exhaust parts, or CAI (Or even 3" mandrel bent tubing so I can make one) for sale PM me.

  14. #14
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    Im installing a 97 Mountaneir 5.0 with an np435 (had adapted the tranny for my cj7 w/ dana 300) mated to a NP231. I will be converting the 231 to mate to a NP205.
    93 YJ SOA on 34x10.5x15 LTBs

    Current Project: Droping in my 5.0 HO and NP435.

  15. #15
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    I'm running an exploder 5.0 w/ 4R70W tranny. Using the explorer electronics to control everything. Very happy with it.

    For a manual, I think you want something a little more stout than a AX-15. NV4500 would answer all of your needs, and empty your wallet.
    87 YJ, 302, SOA, locked

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