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Doubler? Pfh!!!! :)

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Waxer, Sep 25, 2001.

  1. Waxer

    Waxer 1/2 ton status Author

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    Well after the new motor install and converting from a th350/np205 to a sm465/np205 I finally got to drive it and test everything out. I put her in 4low and Granny Low and damn was I going nowhere fast. Engine doing like 4k rpms and I'm only going about 3mph :) I love it. Cant wait to take this baby out on the rocks. My auto setup couldnt even compare to the crawl ratio that I now have.

    Crawlin the rocks with my K5
    <a target="_blank" href=http://www.rockreadyk5.com>http://www.rockreadyk5.com</a>
     
  2. blazer72

    blazer72 1/2 ton status

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    You have what 50 to 1 now Cool ant it!!! Now try the 102 to 1 I run
     
  3. Waxer

    Waxer 1/2 ton status Author

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    dude, I cant even imagine how kick ass that would be to have 100:1. I'm stoked enough with the 50:1 Well I guess one day I'll desire the doubler setup....one day! :)

    Crawlin the rocks with my K5
    <a target="_blank" href=http://www.rockreadyk5.com>http://www.rockreadyk5.com</a>
     
  4. NoRulz

    NoRulz 1/2 ton status

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    one day???
    you mean like the day you drive it somewhere other than to work ???

    hahahahahahaha

    My Ford has chevy parts! it's all good!
     
  5. POWERMAD

    POWERMAD 1/2 ton status

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    The way that he has built up his rig I seriosly doubt that it is a
    pavement pounder.
    You are not going to be one of those PITA posters are you?
    If you are go to the pirate BB they get off on that kind of stuff. [​IMG]
    BTW having a 465/205 is pretty damn cool.
    I realy like mine. I can't wait to get my wheels and roll them 4:10's under my rig. [​IMG]

    <font color=green> Too bad ignorance isn't painful </font color=green>
     
  6. titanic

    titanic 1/2 ton status

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    132:1 is really nice-on the rocks anyway!!!!!
     
  7. Mudzer

    Mudzer 1/2 ton status Author

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    Waxer,

    I have the same combo. I installed it just because of the crawl ratio. I plan to install a doubler behind it someday. I noticed this weekend at Indy, boulder crawling either requires an auto tranny or a manual with extreme low range. I guess I should start saving for the Doubler.

    Mudzer 1978/91 K5
    <font color=blue><a target="_blank" href=http://www.mudzer.rockcrawler.com>www.mudzer.rockcrawler.com</a></font color=blue>
     
  8. michaelm

    michaelm 1/2 ton status

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    dont be so thin skinned, norulz is more hardcore than any i have seen on here.
     
  9. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    what ratio would my SM465 and np208 be outputting in low?

    What? You think the hole is too deep? Lemme see...
    1985 GMC C-10 Shortbed
    1984 Chevy K-5 Blazer
     
  10. Scooter

    Scooter 1/2 ton status

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    The usual formula to figure out crawl ratio is:
    (Tranny 1st gear ratio) x (t-case low ratio) x (axle gear ratio)
    ex: 4.65 x 2.62 x 4.56 = 55.55448 or 55.55:1 crawl ratio.


    Scot in KC, MO.
    <a target="_blank" href=http://www.off-road.ws/images/users/Scooter/side_right_2.jpg>Blue 87 GMC Jimmy</a>
    Red 86 Toyota 4Runner (for sale $2000 obo)
     
  11. Waxer

    Waxer 1/2 ton status Author

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    Shaddup Rulzy. Actually I know him personally and he's just messin with me. 'sides, hes a Frod owner :)

    Actually my K5 used to be my daily a couple years back. Now it just sits until I head out to the trail.

    Crawlin the rocks with my K5
    <a target="_blank" href=http://www.rockreadyk5.com>http://www.rockreadyk5.com</a>
     
  12. NoRulz

    NoRulz 1/2 ton status

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    Powermad: not to worry, I just like giving waxer a hard time

    77chev: thanks, but I think I'm far from the most hardcore around here... hard to say anymore, truck was in pieces so long I hardly remember how to 'wheel anymore... but I'm working on that. [​IMG]

    waxer: also don't forget, it won't be that low once you get some real tires on there [​IMG] [​IMG]

    My Ford has chevy parts! it's all good!
     
  13. michaelm

    michaelm 1/2 ton status

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    never figured out why tires arent included in the crawl formula. if you add the rollout number as if it were a gear 120" rollout per revolution or 120:1
    69 x 120 = 8280
    or in feet
    69 x 10 = 690

    at least you can compare every ride numerically this way.
     
  14. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    That's true. You could have 6.5gears but if your running 60 inch tires you would be no better than the guy on 3.08 and 31's. Tire size is a big factor in "usable crawl ratio".

    I don't need no damn shop manual, I got a pornographic memory.
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    Grim-Reaper
     
  15. zakk

    zakk 1/2 ton status

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    19.8 is my crawl...i think
    (TH350 x NP203 x 4.10's)
    2.47 x 1.96 x 4.10 is that right??

    -Zakk
    '77 K5 SB 400 TH350 NP203 p/t 6" Lift D60 14BFF 4.10's 36"Wrangler II's
     

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