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5 speed OD trannies

Discussion in 'The Garage' started by tRustyK5, Dec 15, 2003.

  1. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I'm starting to do some research into 5 speed manual trannies for my 81 Jimmy.

    The NV4500 is a good candidate but I've found a few others (I think) and wondered if anyone had a bit more info.

    I'm looking at the Spicer 3053A (.85:1 OD) and the Clark 280VO 5 speed (.80:1 OD)

    Will either the Clark or Spicer bolt up to the Chev engines? How about adapting the tranny to an NP205 (or other?)

    How about sources for either tranny (I have a basket case NV4500 already)

    Rene
     
  2. dhdescender

    dhdescender 1/2 ton status

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    the clark bolts up with a modified SM465 bellhousing, hosever as far as I recall MUST be used with a divorced t case... the bull low on that one is quite low aswell.

    Nothing to report on the spicer...
     
  3. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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  4. bowtiepower00

    bowtiepower00 1/2 ton status

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    The Clark was put in all sorts of medium duty trucks, buses, etc. The problems I've heard include the size and weight of the trans, as well as the variety of gear ratios produced that make finding a well spaced box with OD somewhat difficult. I have a 4500, and I wouldn't trade for anything else.
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    280VO looks like a very similar tranny to the NV4500.

    5.98:1
    3.50:1
    1.86:1
    1.00:1
    0.80:1

    208 lbs.

    Actually has a better third gear by a little and only weighs 8 lbs more than an NV4500. Not quite as good an overdrive though. The question is how common is the 280VO, how expensive is it and what kind of mod's do I need to run it and make it work with my 205?

    I was also looking at the Ranger gear splitter...but for $1500 I can buy a NV4500 (5 gears versus 2 /forums/images/graemlins/laugh.gif)

    Rene
     
  6. HarryH3

    HarryH3 1 ton status Author

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    [ QUOTE ]
    I was also looking at the Ranger gear splitter...but for $1500 I can buy a NV4500 (5 gears versus 2 )

    [/ QUOTE ]
    Think of it more as 5 vs. 8. /forums/images/graemlins/wink.gif
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    True enough, being able to split gears would be pretty damn useful...plus it's about as close to bolt in as it gets. /forums/images/graemlins/thumb.gif

    Rene
     
  8. HarryH3

    HarryH3 1 ton status Author

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    Considering the narrow power band that you have to work with, then all the ratios you can get is a good thing. /forums/images/graemlins/cool.gif
     
  9. dhdescender

    dhdescender 1/2 ton status

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    there was somone on BC4x4.com that did the clark tranny swap...rene search "clark" in the chevy section of bc4x4.com, you'll come up with some application info and ways to ID each tranny.

    He mentioned you'll either need a bodylift, or some serious hammer-to-floorboard mods to get the clark in. Personally I would just cut a hole in the floor and weld a larger cap on.

    That 205 adaptor was 10 spline..the advantage to the NV4500 is it already has the correct 32spline connection. Unless you don't have 32 spline..then I'll just shutup /forums/images/graemlins/wink.gif

    If you need adaptor plates made for the clark, I can do a billet aluminum set, since I'm fairly local.
     
  10. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    NV4500
    93-94 GM Only 95-03 GM& Dodge
    1......6.34 1......5.61
    2......3.44 2......3.04
    3......1.71 3......1.67
    4......1.1 4......1.1
    5......0.73 5......0.73
    R......6.34 R......5.04
     
  11. fwdjunky

    fwdjunky 1/2 ton status

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    Not trying to hijack your thread, but does the splitter you were looking at go between tranny and transfer case or on the rear output of the transfer case so it only works in 2 wheel drive? I'm dying for an early 4500 5 speed with a klune underdrive between it and the 205, but if the splitter you are talking about goes between tranny and t-case, it might be a more affordable alternative for me to keep my 4 speed and go with lower ring and pinion ratio's.
     
  12. ZootownK5

    ZootownK5 Registered Member

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    Add '92 to the list for the 6.34 low on the NV4500 for the GM trucks.

    Ryan /forums/images/graemlins/k5.gif
     
  13. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    [ QUOTE ]
    Not trying to hijack your thread, but does the splitter you were looking at go between tranny and transfer case or on the rear output of the transfer case so it only works in 2 wheel drive? I'm dying for an early 4500 5 speed with a klune underdrive between it and the 205, but if the splitter you are talking about goes between tranny and t-case, it might be a more affordable alternative for me to keep my 4 speed and go with lower ring and pinion ratio's.

    [/ QUOTE ]

    The Ranger splitter goes between the bellhousing and the SM465 /forums/images/graemlins/thumb.gif You gain the ability to split every gear, and it's available as either a 27% overdrive or a 17% underdrive. It adds another shifter, and pushes the whole tranny/t-case combo back 7.5". About the only mods needed on our trucks would be shifter holes...

    It's an intriguing option, just a little spendy being that you can find NV4500's for less money. If you tow it would be ideal though. I still haven't ruled it out as an option...I could swap on some 35" AT's and use my truck to tow our trailer again and much more 'comfortably' than ever before. I used to find plenty of hills where I'd have to drop down to third gear where it'd pull the hill no problem but my speed would be less than 40 mph. With the Ranger I could split between third and fourth and gain a bit of speed.

    An NV4500 isn't going to make towing any different, but it'll sure make the drive to Moab quieter and more fuel efficient.

    Rene
     
  14. kennyw

    kennyw N9PHW Premium Member

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    The ranger splitter is a non-syncro'd gear box. I know a guy in Colorado running one that really wasnt that happy with it because it leaked like crazy with the fluid provided (fixed that with 80W90 gear oil) and it had to be double clutched to split gears.
     
  15. u2slow

    u2slow 1/2 ton status

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    The Ranger OD box is actually an old design. Earlier models may well have been non-syncro, or the one your buddy had was worn out. My buddy had one in his '79 K30 and it was syncro.

    Back to the 5-speeds...

    If you can find the Clark behind a 350 in a 2+ ton truck (C50 and bigger), it should have smaller input shaft, bellhousing, and flywheel - apparently the same stuff as an SM465.

    If you get it from behind a 366/427, it will have the larger flywheel, bellhousing, input shaft, and twin-disc clutch.
     
  16. jwglover

    jwglover Registered Member

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    a 208 tcs from a 4 spd manuel or a 400 tranny will bolt
    directly to the nv4500 4x4 tranny,without any special adapter.
    might be helpful with the 5.89 granny gear and the 208 has the 2.71 ratio low gear also.
     
  17. Hossbaby50

    Hossbaby50 3/4 ton status

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    I believe that the 208 has a 2.61 low and that the 241 has the 2.72. Low, but .1 point of gear really isn't that much.
     
  18. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Even if I get the NV4500 (most likely) I'll retain the 205, swap a 32 spline input and redrill the face...208's and 241's are OK T-cases, but I'm not big on cast aluminum and I want to be able to twin stick.

    BTW, 208 low range is 2.61:1
    241 is 2.72:1
    205 is 1.96:1
    203 is 2.01:1

    Lots of companies now sell rebuilds, so I'll get the early GM model with the 6.34:1 first.

    Rene
     

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