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Too big for gearing?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MudFrog, Oct 10, 2000.

  1. MudFrog

    MudFrog 1/2 ton status

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    Would a 6" lift, 35" or 36" tires and 3.42 gears be a horrible combination if I stayed away from OD on my 700R4? I would end up changing out the axles before I replaced the gears in the 10 bolts. But this would probably be at least a year before I got the money to do the axles after lifting and getting tires. Oh yea I have a very large tranny cooler also. Should I stay away from the larger tires and stick with a 33"?

    89 K5 Silverado
    http://mudfrog.coloradok5.com
     
  2. mudfanatic

    mudfanatic 1/2 ton status

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    If I were you I would stick with the 33's right now and do your lift, tires, and axles all at once next year
    Dan

    <font color=red>get involved with land issues or lose the land</font color=red>
     
  3. Jason73K5

    Jason73K5 1/2 ton status

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    I ran 35's and 3.08's for a couple of years. I thought that it actually wasn't a bad combination considering the lower first gear of the 700R4. I didn't get to use 4th gear much, but I was able to get into it during level highway cruising. I think your 3.42's will do just fine as long as you're not trying to win any races. One year like this shouldn't give you any problems at all.
     
  4. '73 K5

    '73 K5 1/2 ton status

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    Its doable with an auto. I've seen alot worse.

    '73 K5
    Chevy good...Ford bad
     
  5. MudFrog

    MudFrog 1/2 ton status

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    Jason,
    The main reason I was asking is because I ran 35" Thornbirds with 3.08 gears in my old truck. I went through 4 Transmissions in a year and a half. Thats what worried me, I don't have the money to put new transmissions in at $1000 a pop. Any of ya'll run 35" or 36" with 3.42?

    89 K5 Silverado
    http://mudfrog.coloradok5.com
     
  6. Derf00

    Derf00 1/2 ton status

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    I have a friend who is running 35" Swampers, 3.42's, 4" lift, 3" body lift on a '91 Blazer. He was previously running 33's. He is waiting until he can aford a gear change, but so far he has not experience any problems. He runs it in the mud quite frequently and hasn't torn anything up yet.
     
  7. Emmettology 101

    Emmettology 101 3/4 ton status

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    I also ran 3.08's with 35" DTR's for about 3 years without problems. I was also running a TH350 and didn't have that nice 3.0x:1 first gear or overdrive.

    I say go for it and then get your axles and gears!

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; http://emmett.coloradok5.com
     
  8. 89K5

    89K5 1/2 ton status

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    I have 4" and 35s w/3.42. Low end power sucks, but I do mostly highway driving anyway. I did put in a tranny cooler, tranny temp gauge, shift kit, and drain plug (change 2-3 times/yr). Going on 3 years with no problems. Never use or need overdrive.
     
  9. MudFrog

    MudFrog 1/2 ton status

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  10. bablazer73

    bablazer73 1/2 ton status

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    I had an 87 with 3.42, 2" lift, 33" tires, and a 305/700r4. I thought it was a dog. I blamed the 305 but gears would have helped. it wasn't a off road truck, it was my wifes daily driver. she didn't care.

    your right. I don't understand the jeep thing!
     
  11. MudFrog

    MudFrog 1/2 ton status

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    I think the paranoia about dropping tranny's left and right is taken it's toll. I believe for now I will just do a 4" front springs and ORD shackle flip with 33" maybe baja claw since I can get them in a 13.50.

    89 K5 Silverado
    http://mudfrog.coloradok5.com
     
  12. 89K5

    89K5 1/2 ton status

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    Mudfrog, no pics yet. I have a digital video camera, but haven't figured out how to use it yet.
     
  13. MudFrog

    MudFrog 1/2 ton status

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  14. rich'90

    rich'90 1/2 ton status

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    I had 35s with 3.08 gears for 1 1/2 years for the same reason. Did not have the money for axles and was not going to spend money on gears when I knew I was going to change axles. I went through one 700R4. Wish I would have waited with the tires to do it all at once. Unfortunately I am not disciplined enough to save money for that long to do everything at once.
    good luck

    go heavy or go home
     

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