Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

What to do?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MudFrog, Jan 13, 2001.

  1. MudFrog

    MudFrog 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    3,236
    Likes Received:
    0
    Location:
    Daleville, Va
    Ok...Ya'll have probably seen one of my posts about my rearend starting to crap out. Now I really don't want to rebuild the 10 bolt, so I want to install a 14 bolt, because I don't feel like dumping $600 into a 10 bolt when I plan on swapping it out after a while anyway.

    The problem is my 10 bolt front, it has 3.42 gears. More than likely the 14 bolt will have either 4.10 or 4.56's. How horrible would it be to run this combo? Or should I just look for a cheap dana44 to swap in? If at all possible I would prefer to try and get by with the 10 bolt, let me know what kind of problems I could run into doing this.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  2. Jason73K5

    Jason73K5 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    592
    Likes Received:
    0
    Location:
    Fresno, Ca
    I wouldn't run it in four wheel drive with it like that, but you won't have any problems in two wheel drive.
     
  3. 90K5

    90K5 1/2 ton status

    Joined:
    Jun 1, 2000
    Posts:
    3,719
    Likes Received:
    0
    Location:
    Lubbock, TX
    If you keep it like that and run it only in mud, It will be fine. Mud runners do this on purpose sometimes so the front has an overdrive? and pulls the truck through obstacles.

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  4. mudhog

    mudhog THEGAME Staff Member Super Moderator

    Joined:
    Nov 6, 2000
    Posts:
    17,899
    Likes Received:
    2
    Location:
    portland oregon
    i would look around and see if you could find a pair (14bolt and 44) i have seen matched pairs 4 well under $600. i would not run 3.42 front and 4.11 or4.56 in back if you do i would not use 4wheel drive only 2wheel

    s.smith 77blazer lookin 4 mud
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    Have you checked the Parts for sale area? Brians60's I think has a set of 3/4 ton axles. If it is not him then ThatK30Guy has them. I believe the asking was $500 for a 14 rear and a Dana 44 front. Sounded pretty reasonable to me. I think they were 4.10's too.

    I would do it this way because you'll get the gears you want and for a lot cheaper than getting a rear and having to change ratio's in the front.

    If you just got new tires you could always get ahold of some 15" rims with the 8 bolt pattern and retain the 15" tires. Then you'll have the best of both worlds [​IMG]

    Rene

    [​IMG]
     
  6. yeild2me

    yeild2me 1/2 ton status

    Joined:
    Jan 7, 2001
    Posts:
    1,309
    Likes Received:
    0
    Location:
    fayetteville, nc
    hold on a sec....wouldnt you need numerically higher gears in the front to have that effect? with 4.10's in the rear and 3.42's in the front and the t-cast in high (1:1)and assuming the tires are the same size- the front is going to turn 3/4(approx.) of a turn less than the rear(read: slower), therefore creating an underdrive. am i bassackwards on this or what??? i remember something similiar to this was in 4wheel and offroad a long time ago but i dont remember what it said...
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    If he has 3.42's in the front then the driveshaft would turn 3.42 times to turn the tire once, and 4.1 times around to turn the rear tires. So at 1000 rpm of the driveshaft the front tires would be turning at 292 RPM and the rears would be turning at 243 RPM. So you can see the front tires would be turning at a faster speed, in effect pulling the truck.

    Hope that helps.

    Rene

    [​IMG]
     
  8. MudFrog

    MudFrog 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    3,236
    Likes Received:
    0
    Location:
    Daleville, Va
    Ok...Well I just hope my rear end will hold out till I get my taxes back. Cause I have NO cash flow that isn't going straight to bills. If I could find a 44/14 combo, I would most likely go for it if they still had it when I get the money. What else would be required to buy to do the axle swap? I know the $500 for the axle won't cover everything, what else would it need?

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  9. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    New u-bolts, possibly a hybrid u-joint for the rear. Rims with the 8 bolt pattern. Thats about all that comes to mind, its been a while though.
    Almost forgot, I had to relocate the shock mounts on the 14 bolt.
    The front is a no-brainer.
    Rene

    [​IMG]
     
  10. MudFrog

    MudFrog 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    3,236
    Likes Received:
    0
    Location:
    Daleville, Va
    Is there a certain year that would bolt right up.... like one I wouldn't have to relocate the shock mounts as I would have no way of doing that.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  11. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    Well the 3/4 ton version is the least trouble to swap, the one ton version requires the spring perches to be moved as well. I'd move your shock mounts for nothin' except its a bit of a drive for me [​IMG] It really shouldn't cost that much to have them moved, its an easy job. Try a fab shop or even a muffler shop, those muffler guys are pretty handy with a torch and welder.

    Rene

    [​IMG]
     
  12. MudFrog

    MudFrog 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    3,236
    Likes Received:
    0
    Location:
    Daleville, Va
    Cool...Thanks Rene....
    I think I'm gonna drive it to the local shop and have them drive it so I can be a 100% sure it's the rear end....even though I'm 99.9% sure. I'm sure they can change everything that needs be.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  13. DMK

    DMK 1/2 ton status

    Joined:
    Feb 20, 2000
    Posts:
    757
    Likes Received:
    0
    Location:
    CINCINNATI, OH
    What makes you think the rearend is going out? When my 89's
    rearend started to go out it made noise for about 2-3 months then clunked for about another 2 months. Then made a big clunk and that was it. It had about 85,000 on it. My 87's went out around 110,000. It may hold out for ya. Good luck.
     
  14. MudFrog

    MudFrog 1/2 ton status

    Joined:
    Feb 23, 2000
    Posts:
    3,236
    Likes Received:
    0
    Location:
    Daleville, Va
    The K5 has about 110,000 on it, and the rearend is thumping, clanking and grinding. I'm hoping it will last a month or two till I have the money. But I need to start coming up with a plan on what to do when it does go out on me.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  15. Panther

    Panther 1/2 ton status

    Joined:
    Aug 31, 2000
    Posts:
    845
    Likes Received:
    0
    Location:
    South Jersey
    Take the back driveshaft out and drive it around in front wheel drive....

    previously known as four wheel drive [​IMG]

    <font color=blue>"You call it clearance, I call it head room." [​IMG]</font color=blue>
     

Share This Page