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figured out how to fix 4HI- couple ??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MudNurI, May 24, 2002.

  1. MudNurI

    MudNurI 1/2 ton status

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    I figured out how to fix the 4HI problem, of it not engaging due to the body lift. I looked and looked, until I found the rod thingy you guys are talking about..I see that it is threaded, and that I need to "unthread" it to make it longer, so that it engages..it's wicked rusty, and I will have to soak it with penetrating fluid prior to being able to really see it...is there an easy method to removing the rod, and rethreading it, or is it pretty self explanitory once I get it cleaned up...I can't even tell how its connected to the shift lever, thats how crappy it is.

    p.s. I know this is ONLY a pavement Pounder, but I will need 4HI should I ever drive it in the winter.

    and I also know you want to know what my transfer case is but I can't remember what you guys told me before...its the 4spd manual tranny..if that helps

    thanks!
    Brandy
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    It should become more obvious as you get it cleaned up...

    I'm gonna guess it's a NP208. I have no idea what year your truck is but again I'm going to guess newer than 81. There were 4 T-cases offered behind the SM465. the 205 was the most common, but the linkage would not be afected by a body lift, because it's not attached to the body at any point. The 203 behind the SM465 was only offered for one model year ('74) so that is a slim chance I suppose. That leaves the second most common T-case behind the 4 speed, the NP208. Shift bucket mounted to the tranny tunnel with linkage going back to the T-case...

    Rene
     
  3. MudNurI

    MudNurI 1/2 ton status

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    I'd say its a NP208, that number rings a bell...your probably right. It's an 86.

    I sprayed it down this morning, with some liquid wrench stuff, and finished taking out the seats, and cleaning up the floor, I'd say 20 minutes it sat with the stuff on it..looks pretty simple now..seems to be just a few turns and it'll work. But with my luck it's going to turn into some ratchet tossing stuff...I'm sure the neighbor's by now are about fed up with the truck in the yard..for some reason, they don't understand ...hmm

    thanks Rene

    Brandy
     
  4. MudNurI

    MudNurI 1/2 ton status

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    I'd say its a NP208, that number rings a bell...your probably right. It's an 86.

    I sprayed it down this morning, with some liquid wrench stuff, and finished taking out the seats, and cleaning up the floor, I'd say 20 minutes it sat with the stuff on it..looks pretty simple now..seems to be just a few turns and it'll work. But with my luck it's going to turn into some ratchet tossing stuff...I'm sure the neighbor's by now are about fed up with the truck in the yard..for some reason, they don't understand ...hmm

    thanks Rene

    Brandy
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Nice combo, 32 spline SM 465 with a hydro clutch stock.

    good luck!

    Rene
     
  6. 84_Chevy_K10

    84_Chevy_K10 Banned

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    That is a pretty good setup. Just add a 205 and shafts and you've got the ultimate in stock setups IMO.
     
  7. MudNurI

    MudNurI 1/2 ton status

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    uugghh speak in laymans terms,,what the heck is a 205 and shafts...go ahead and laugh..I'm learning I'm learning!!

    Brandy
     
  8. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Sounds like Tim figures you should ditch the NP208 you have now in favor of a 32 spline NP205 (all gear cast iron bomb-proof T-case) I guess if you were gonna crawl it at Moab on 42's and a 600 hp big block that would be a good idea. In your case the NP 208 will serve you fine for many many years.
    A mostly street truck has no need for the hardcore parts...

    Keep the NP 208

    Tim, what's with all the dumb comments and inane advice to Brandy? It's gonna be a street truck, get over it unless you have something truly constructive to add.

    Rene
     
  9. m j

    m j 1/2 ton status

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    ouch!
    did he post more then swappin a 205 would be ultimate?
    seems harsh from you, kinda steppin on my terrian there as mean forum guy
     
  10. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    This has been going on in a couple of different threads now...

    Besides...who said you get all the fun?/forums/images/icons/tongue.gif

    Rene
     
  11. m j

    m j 1/2 ton status

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    dont make me hurt your feelin's
     
  12. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    LOL...better be careful or I'll call the WAH-mbulance

    Rene
     
  13. MudNurI

    MudNurI 1/2 ton status

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    Thank you Rene- and your correct, seems every time I ask a question there is a smart a** comment....only good thing is know I have figured out who knows what they are talking about, and whose just blowin smoke....

    thanks!
    Brandy
     

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