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How come I can't spin my front tires with a healthy 454

Discussion in 'The Garage' started by MEGALADON, Oct 5, 2005.

  1. MEGALADON

    MEGALADON 1/2 ton status

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    I have a gravel drive next to my company, today, I put it in 4 low and floored it to see what would happen, the rear spun, and the front end lifted up like crazy, kinda like someone hit me from behind. 4 low is ssoooooo low of a gear.
    I can only go like 20/30 MPH in low, 4 high, I have not tried yet, but thought
    I shoud spin the front easy on dirt or gravel, are these trucks in stock form
    not geared for spin up front, I can smoke the hell out of the tires in normal drive, and they chirp when I turn a tight corner.

    [​IMG]
     
  2. 6.2Blazer

    6.2Blazer 1/2 ton status

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    If you have it locked into 4wd, and it's working correctly, there is no way that the rear tires can spin and the fronts won't.
     
  3. randy88k5

    randy88k5 1/2 ton status

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    what gears u running?
     
  4. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    I see factory auto locking hubs.... Those could be the source of your problem. I'd get some Warns on there first.

    John
     
  5. MEGALADON

    MEGALADON 1/2 ton status

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    stock
     
  6. MEGALADON

    MEGALADON 1/2 ton status

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    It does not spin so freely or as fast as it does if its in 2H, it almost feels like I have traction control, I know my truck never came with that, but you know what I mean. ;)
     
  7. MEGALADON

    MEGALADON 1/2 ton status

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    Yes I can control 2/4 wheel drive from inside the truck, never having to get out :bow:
     
  8. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    Yes, but often the auto hubs are defective after many years of service. Mine would engage out of the blue, or wouldn't engage when I needed them to.

    With a "healthy" BBC I would change them out to manual hubs. Just my opinion..

    John
     
  9. MEGALADON

    MEGALADON 1/2 ton status

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    How do I do that??? I don't have any problems now with my hubs.
    Is there a link, or something to see what manual hubs look like, and do??

    Do I have to change my front axels for a warn??
    THANKS :D
     
  10. muddybuddy

    muddybuddy 3/4 ton status

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    its pretty easy, just unscrew the cover, pull the auto crap out and put in the manual ones, the difference is that you ahve to get out every time to engage them, but they wont break on you when you need them most...like the auto ones.
     
  11. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Stock don't tell us anything as stock can be anywhere from 2.73 up to 3.73 in 1/2 tons.
     
  12. MEGALADON

    MEGALADON 1/2 ton status

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    LOL, If I knew what they were, I would have gave a ##, so they are somewhere in the 2.73 and 3.73 range, if those are somewhere in the stock ratio's.

    All I know so far Is I bought this one owner 82 completely stock and unmolested, except for a 350 trans put in, and the 700r4 taken out.
    the motor was a 350 4 bolt main, that blew up very well indeed. I put the 454
    in and going to put a 700r4 back in. So I'm still a NEWB here ;)
     
  13. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Jack up the rear end off the ground.
    Mark the tire at 12:00 position.
    Mark the rear d-shaft at 12:00 position.
    Chock the front tires and shift tranny into neutral.
    Lay under the truck and rotate the tires one full revolution.
    While the shaft is spinning, count the number of turns it makes from the mark at 12:00.
    Once the tires return to the 12:00 and you counted the revolutions on the shaft, that should give you a ball park idea of the ratio.

    For example:

    Tire spins one turn while the d-shaft spun 3 turns would mean you have 3.08 ratio.
    If the shaft spun 4 turns, 4.10 ratio. If it was 4.5 turns, 4.56 ratio.

    You get the idea.

    If the truck is NOT a posi-track rear, spin both tires equally at the same time with both hands in one direction. If the truck is a posi, you can simply spin one tire as the other will spin along with it.
     
  14. MEGALADON

    MEGALADON 1/2 ton status

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    Great, i'll do that tonite, and post tomorrow on the ratio.
     
  15. darkshadow

    darkshadow 1 ton status

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    yeah but it you loooked it and then stomped on the gas, the front will not have locked yet i *think* the tire must turn a revalution or two befor the hub acualy locks in to the axle.

    i remember a guy i know with a ford stuck in some sand and he said he had to jack the front up and spin the tire to get it to lock , then he could get the truck out with 4x.

    try rolling the truck first then doing it (if you really want to)
     
  16. dontoe

    dontoe 3/4 ton status GMOTM Winner

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    I busted two on my '82 K-10 in the '80's and had trouble with them not wanting to disengage sometimes. Ya have use 4X4 once a month minimum, or they don't get lubed. Plus they need to be taken out and greased..........what, once a year for light duty use?
     
  17. sweetk30

    sweetk30 professional hooker Premium Member

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    thats what we are trying to tell ya . there is probley a problem with one of them.:o
     
  18. MEGALADON

    MEGALADON 1/2 ton status

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    Well tonite is the nite to check and see what I have, can I do the same for the front also???

    I am going to lock in 4 HI and drive a few feet forward, then stomp it,
    and see what happens.

    I think DARKSHADOW has a good point. :doah:
     
  19. 350k5

    350k5 1/2 ton status

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    To engage Automatic locking hubs this is what you do.
    First stop the truck and Put it into 4Hi.
    Then slowly roll forward about 15 or 20 feet
    (You do the reverse to disengage the Hubs... ie Put it into 2Hi and then back up 15 or 20 feed to free them).

    After that they should be locked, but I woudln't just stomp it right away... that could cause damage if they are old and not quite engaged yet. I would recomend driving slowly at first to really ensure the Auto Hubs have engaged correctly. Then you can stomp it, or go down into 4Lo for some more spin if you like.

    Bottom line, AutoLocking Hubs suck, get some manual locking ones... easy to instal and so much stronger and reliable.
     
  20. 79k20350

    79k20350 3/4 ton status

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    YOU DONT HAVE TO SPIN BOTH TIRES AT THE SAME TIME. you can spin one and then the other, just make sure the tire opposite of the one your spinning doesnt start moving too (from drag) that'll throw the numbers off.
     

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