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hmm, not the best set up??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 75blazer454, Nov 13, 2002.

  1. 75blazer454

    75blazer454 Registered Member

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    454 bb with around 400hp, th350 tranny, 35" tiers and 12 bolt with 3.08 ??

    or am i going to destroy somthing??

    sorry for my bad english /forums/images/graemlins/frown.gif
     
  2. bobsurf

    bobsurf 1/2 ton status

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    I'm pretty sure you're going to destroy everything. /forums/images/graemlins/grin.gif

    Those gears and tires don't match.
     
  3. Z3PR

    Z3PR Banned

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    I think (well, maybe) that you'll loose the tranny, or rip those 1/2 Ton axles apart. I would get a matching set of 3/4 Ton axles. You can normally find them with the more dezirable gears. 1 Ton axles would be better yet, but alittle to costly for me.
     
  4. BorregoK5

    BorregoK5 1/2 ton status

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    The main input shaft on that TH350 is splined into an aluminum drum. My 415ci stripped a couple of them until I bought a steel one. A good compliment to this are the heavy duty sprags, larger capacity clutch pack assembly and the addition of stronger clutch packs. Running 35's on 3.08's may be less than desireable as far as performance and depending on the type of wheeling you do the 12 bolt may also be a weak link.
     
  5. BurbinOR

    BurbinOR 3/4 ton status

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    I actually ran that combo in my '75 for a while.............never blew anything up in the three years I had it, and the motor was extremely strong. Those T350's are a lot stronger than people give them credit for.............. /forums/images/graemlins/eek.gif
     
  6. cheyenne_77

    cheyenne_77 Registered Member

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    Make sure that you have a very good tranny oil cooler as you will fry it. I ran poor gearing on my street car (2.7 with 29 inch tyres, before i could afford the respectable gear change to which would have been much cheaper to do in the first place) and went through boxes for breakfast. (Too hot even with respcetable aluminium tranny oil cooler)
     
  7. imiceman44

    imiceman44 1 ton status

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    I had 2.73 gears for 5 years with 32" tires and a th350
    No problem.
    I only had to change the trany when my slip yoke grenaded in the tail housing.
    By the way this was a 2wd with no lockers.
     
  8. 75blazer454

    75blazer454 Registered Member

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    thanks, i dont have the money too upgrade anything yet.

    i think i am youst have to try driving carefully.

    sorry for my bad english.
    Kristoffer
     

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