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How bulletproof?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by deothrwhtmt, Jul 8, 2002.

  1. deothrwhtmt

    deothrwhtmt Registered Member

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    Just how much can a NP205 take?
     
  2. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> Lots, more than most people can give it. I'd guess upwards of 500 ft/lbs, probably quite a bit more. </font color>
     
  3. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    i've only seen/heard of one 205 breaking, that was a furd f100 in TTC a few yrs ago. because the front axle moved back, the driveline moved back and cracked the case where it mounts to the tranny. but none of the gears broke.
     
  4. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    the only real weakness I have ever heard of in a np205 is in the ones that have 10 spline front outputs. Upgrade that bad boy to 32-spline and the 205 plenty ready for 500+ ft/lbs.

    J
     
  5. Batmanjr

    Batmanjr 1/2 ton status

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    THat and the 10 spline INPUTS! Can't forget about rounding those bad boys off! /forums/images/icons/grin.gif Stay away from the 10 spline thing!!! You won't be able to break it! There's a reason I've converted all my 208 to 205s and this is why: NO CHAIN! CAN'T BREAK IT!!! I've bought 205s off of `70 trucks that look brand new on the inside because they're all gear! Best transfer ever made! /forums/images/icons/cool.gif
     
  6. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    except for the worthless low range. /forums/images/icons/frown.gif
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    How good is the low range in a busted T-case? /forums/images/icons/grin.gif

    Rene
     
  8. Batmanjr

    Batmanjr 1/2 ton status

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    How do you mean worthless low range? I think 2:1 is plenty low for a stock transfer!
     
  9. wayne

    wayne 3/4 ton status

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    I have seen one that blew the guts out. It took about 1200hp in a pulling truck to do it though. I think just about anything a normal person throughs at it won't be a problem.
     
  10. MudbogAD

    MudbogAD 1/2 ton status

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    All I know is that they are strong. /forums/images/icons/smirk.gif
     
  11. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    the 205s low range isnt the greatest... it would be nice if there was a way to make it 4 to 1 by swapping gears or something... but hey... cant have everything!! /forums/images/icons/laugh.gif

    j
     
  12. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    I got a Bud that managed to blow the back off one on his Bronco. He's a tallented guy though. He blows up D60 fronts all the time. I think he has a 460 mildly built in it.
     
  13. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    Put it this way they can and do break, but mostly due to lack of maintainence and/or excessive (more than most of us will see HP/torque). Different spline counts have different strengths but overall it is the strongest stock (and in most cases stronger than the aftermarket) t-case you can get.

    In the truck pulls I have seen several adaptors break (mine included) but the case was fine and I've seen one front output shaft snap and one rear output shaft snap (built 454) after pulling one front wheel off the ground........TORQUE!
     
  14. ratpack7

    ratpack7 Guest

    " the 205s low range isnt the greatest... it would be nice if there was a way to make it 4 to 1 by swapping gears or something..."
    I thought that was the whole idea behind the duobler?
     
  15. deothrwhtmt

    deothrwhtmt Registered Member

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    Good so what you guys are saying is, if someone were " smart" enough and decided that they were going to run top loaders and terras it wont go up. At least I can reassure his gf now.
     

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