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3.6:1Low gear sets for the NP203.

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by pcorssmit, Jan 14, 2002.

  1. pcorssmit

    pcorssmit 1/2 ton status

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    Just saw this on POR:<a target="_blank" href=http://www.wagonermachine.com/new_products.htm>http://www.wagonermachine.com/new_products.htm</a>

    3.6:1 low gear sets for a 203 t-case from Wagoner Machine. Over 7:1 w/a doubler.

    Pete

    '83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  2. m j

    m j 1/2 ton status

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    need info!
    exchange? just gimme the gears

    formerly 77chev
    still a jerk though
     
  3. Blazr77400

    Blazr77400 1/2 ton status

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    probably be cheaper to just stack 2 203s together wouldnt it?

    4 wheeling is like sex, when its good, its really, really good, when its bad its still pretty good.
     
  4. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Well if you think about it......no. In addition to the doubler kit you have to think about the cost of the Np205 or 203 depending on what you already have or both if your going from a 208. You also have to think about drive shaft work. Your WAY over $1k. Also 2 203's and a 205 and your going to have major rear drive line angle problems and may not be able to run down the why. Might also have some issues of how to keep the three secured in such a way that they don't bust the adaptors.
    Problem is 3.6 as your only low may not be a good combination. I wheel Tellico and 95% of the time 2-1 is fine for my needs with my gear ratio in the axles. When I do need lower, 4:1 would be about right. Problem is I couldn't live with 3.6 the other 95%. I would have to be comming out of low a lot on long streeches where I'm just traveling that 2:1 is alright. If I geared any lower, for trail running in High, it would be a pain on the hwy. I think it's dirrected right for being an upgrade to use with a doubler. That 5% of the time 7.2:1 would be acceptable. So even at the higher cost I still think the doubler is the way to go then decide if you need a extra low, low range.

    Women dig dents and flat paint!
    coloradok5.com/gallery/Grim
    75 Jimmy, Dollar
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  5. Butch

    Butch 1/2 ton status

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    Is it just me or does that look like a dana 20 instead of a np203?

    I thought I was wrong once,
    but I was mistaken
     
  6. blazer72

    blazer72 1/2 ton status

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    I needmore info than that photo before I go this step. It would be a nice add to the 203/205.

    72 Blazer 400TPI NV4500 NP203/205, 6 bolt FF14
    01 Suburban 8100 2500 4X4
     
  7. RedDwarf

    RedDwarf 1/2 ton status

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    Yeah, that long inspection cover says 20. Them Waggoner boys are just the ones to come up with something like this. Imagine, the 203 just might become popular after all!
     
  8. pcorssmit

    pcorssmit 1/2 ton status

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    [quote[Problem is 3.6 as your only low may not be a good combination. I wheel Tellico and 95% of the time 2-1 is fine for my needs with my gear ratio in the axles. When I do need lower, 4:1 would be about right. Problem is I couldn't live with 3.6 the other 95%. I would have to be comming out of low a lot on long streeches where I'm just traveling that 2:1 is alright.

    <hr></blockquote>

    Sounds like you need overdrive. I've had mine up to 65 in low (2.6:1), not really sure this capability is neccesarry. Sure does make a neat whine with the 208's straight cut planetaries, though. [​IMG]

    Pete

    '83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  9. thatK30guy

    thatK30guy 1 ton status Premium Member

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    <a target="_blank" href=http://www.wagonermachine.com/transfer_case_adapters.htm>Click here</a> to see the correct picture.

    Seems like the wrong pic on their opening page. I had to go to the "catalog" section on their site and scroll down to find this pic.

    It looks like some setup with three t-cases. I see 3 PTO covers.



    I'm not picking my nose...I'm just pointing at my brain!! [​IMG]

    <a target="_blank" href=http://coloradok5.com/gallery/thatK30guy>The K30 Collection</a>
     
  10. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    <blockquote><font class="small">In reply to:</font><hr>

    Sounds like you need overdrive. I've had mine up to 65 in low (2.6:1), not really sure this capability is neccesarry. Sure does make a neat whine with the 208's straight cut planetaries, though. &lt;http://coloradok5.com/forums/images/icons/smile.gif&gt;

    <hr></blockquote>
    65 with OD and turning 4500rpm maybe. That's being pretty rough on the truck, My next tranny will be a 465. No OD there but now loss either. Right now with the TH350 I'm turnning 3k at 65 mph. I live in Atlanta. 65 is going slow around here. Yeah OD would be nice but I'm not about to put money into a 700R4. I can rebuild the TH350 myself and it's stronger and more reliable than a 700. the 700 is over my head when it comes to building and I can convert to a 465/205 for less than half what a Decent 700 is going to cost me. If I was doing more lowspeed rock crawling for extended periods I could see the 3.6's working.

    Women dig dents and flat paint!
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    75 Jimmy, Dollar
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  11. CK5

    CK5 In my underwear Administrator Premium Member GMOTM Winner Author

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    Hmmm, I love this option though, makes running a TH400 with a high gear a viable option to get ultra low gearing. And to think I just took apart my 203 and have the range box just sitting there. [​IMG]

    Steve

    Director of Global Expansion
     
  12. RUSS84K5

    RUSS84K5 1/2 ton status

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    Hi,

    I think your right Wes, the gears ratio in the text tells me it's 2 to 1 with the NP205, 3.6 with the NP203 rang box, and you get the 7.2 with both engaged. it would be nice to have the right pic and a better write up

    Russ

    <P ID="edit"><FONT class="small">Edited by RUSS84K5 on 01/15/02 09:33 AM.</FONT></P>
     
  13. pcorssmit

    pcorssmit 1/2 ton status

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    Yeah, 65 in low is wrapped out in OD (w/the 39.5s). On the highway with street tires (worn out 35s), 3000 rpm is about 100 mph.

    I was kind of thinking about this last night, I'd still rather have the doubler (with std gearing), but this may be a good alternative for someone who already has a 203.

    You'll never take away my auto in the wheeler.

    Pete

    '83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  14. Kyle89K5

    Kyle89K5 1/2 ton status

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    actulally the guy that runs wagoner machine is running 2 203's and a 205 in his scrambler/thing. All you can hear is gear whine when he' moving. There are shifters EVERYWHERE in that thing. It's a cool looking rig.

    Don't think I'm gonna be jumping on it anytime soon. $1000 will go a lot farther else where.

    Kyle
    89K5
     
  15. Boss

    Boss 1/2 ton status Author

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    I agree with you there. Definately a cool option, but Yikes on the price!! [​IMG]. I think having 4:1(3.96:1) option is good enough....my opinion.
    Boss

    Pic of my truck Before N' After
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  16. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Seems like this would be better fitted to a longer wheelbase truck, like any regular pick up or longer, like a crew cab.

    I think I will just stick with getting the Doubler for the '82 K30 because I don't want the rear shaft getting too short. [​IMG]



    I'm not picking my nose...I'm just pointing at my brain!! [​IMG]

    <a target="_blank" href=http://coloradok5.com/gallery/thatK30guy>The K30 Collection</a>
     
  17. pcorssmit

    pcorssmit 1/2 ton status

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    If used in a doubler, it would still be the same length, and the doubler is the same length as a 203.

    Pete

    '83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  18. Stephen

    Stephen 1/2 ton status Moderator Vendor

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    I think they're only planning on using this with a dual case setup. I think a good 203 could take the torque, but it's going to be hard on the chain. Basically it comes down to having an extra low gear with a Doubler. I know I usually run in 4:1 low most of the time and just run up into overdrive if I need to go faster. So 3.6 would work well for a general low range, with a 2:1 option for wheelspin and a 7.2 for ridiculous low range. I'm at 62:1 overall and really don't think I need more with the 42's. I know Larry Dagon is at about 49:1 and wants a squeeze lower gears with his 42's. But he has 4.56 gears so there's some room to go up there if you're starting from scratch.
    This is interesting though.

    Making the world better, one truck at a time.
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  19. CK5

    CK5 In my underwear Administrator Premium Member GMOTM Winner Author

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    It gives a few more options for people with TH350/TH400's you could run 4.10 gears for hiway (37-39" tires) wouldn't really need OD at that point and still have sick low gears for crawling. The price is on the higher end but if you figure in you wouldn't have to regear (unless you want real low) it isn't that bad. Like Stephen said if your starting from scratch it may work for you.

    Steve

    Director of Global Expansion
     
  20. Shawn

    Shawn 1/2 ton status Premium Member Author

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    The main reason I shyed away from the TH400/Doubler combo is the crappy crawl ratio you get at the end. It would be worse than my stock 465/205 and I didn't want to go backwards. My current crawl ratio with the 465 is 63:1 and a TH400\doubler would be 48:1. The 465's 63:1 is great but I want a little more. This option (though pricey) gives me another solution and makes me re-think the TH400 route (final crawl ratio would be 87:1). What to do.... What to do....

    A) Stick with the good ol' 465 and run the standard Doubler combo. (cheapest)

    B) NV4500 with a standard doubler combo (a little pricey for the tranny)

    C) TH400 with the Doubler and the 203 3.6:1 gears. (about the same price as B since I already have a 400/203).

    Shawn
    87 K5
    few mods [​IMG]
    <a target="_blank" href=http://www.off-road.com/chevy>www.off-road.com/chevy</a>
     

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