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is it tought enough and whats the weakest point?

Discussion in 'OffRoad Design' started by primerk5, Sep 7, 2001.

  1. primerk5

    primerk5 1/2 ton status

    Jan 13, 2001
    Likes Received:
    Finksburg MD
    i have an 83 chevy blazer no options just a regular blazer over the last 3-4 months i have been building it from scratch i have a rebuilt 350 (only berings and rings and minor head and other need things) bolted to a th350 (b&m deep pan with a 7xsomething transcooler)to a converted 203 t-case(couldnt find a auto 205 any where where i live) puting the power to a front 10 bolt and a rear 14 bolt ff running 4.10 gears(back rear has a clutch type posi that i donot know the name of. I am runing 11 inches of lift (6 in springs, 2 in traction lift, and 3 in body) My tires are 42x15x15. super swampers what is my weakest point and what is my strongest point is there any things i should upgrade??

    My opinion on this is that my t-case is one of my weakest point because of the chain i also think the 10 bolt is weak too
    what do you think


  2. Boss

    Boss 1/2 ton status Author

    Feb 17, 2000
    Likes Received:
    Your front axle is probably the first to go. That is your weakest point right there, especially with your 42"s. But it really depends on your wheelin style and what you do.
    203 is a stout case, even though it's chain and all, but it's the stoutiest (word?) chain driven case there is. Chains do wear, but it'll take you a while to do so, especially if it's rebuilt.

    Pic of my truck Before N' After
    <a target="_blank" href=http://coloradok5.com/gallery/BeforeNAfter>http://coloradok5.com/gallery/BeforeNAfter</a>
  3. sapper

    sapper 1/2 ton status GMOTM Winner

    Jul 11, 2001
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    Might need to regear for those meats also.

    <a target="_blank" href=http://coloradoK5.com/gallery/Pauls89K5>http://coloradoK5.com/gallery/Pauls89K5</a>
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Jul 23, 2000
    Likes Received:
    E-town baby!
    That 10 bolt will last forever...as long as 4 WD is never used.[​IMG]
    If you wanna run 42's and play with the big dogs its time for a D60 and some better gears...like 4.88's or 5.13's.

    Of course this is just my humble opinion...


    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
  5. Stephen

    Stephen 1/2 ton status Moderator Vendor

    Sep 15, 2000
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    Carbondale Colorado
    I'd say the next place to put money into the drivetrain is in the front axle. Or in a D60 front. Everything else you have will work OK with the 42's, but the front's going to be breaking pretty often if you use it much. So for now, leave the front open, fine some extra axle shaft, buy the tools it takes to change them and carry it all with you. Then save money.
    Next, I would save up a little to replace the Gov-Loc in the rear. That's the "limited slip" you referred to. They tend to shell out small parts when used hard. I think it would probably be OK with 35's and mild wheeling, but not with 42's. You'll need an open carrier for the diff and then you can put in a detroit if you want.
    Deeper axle gears are going to be a good idea, I'm guessing the TH350's going to be worked pretty hard moving it around just on the street with 4.10's and 42's. That part may be OK, but the off road gearing isn't going to be real great. I think with a single 2:1 t-case, 5.13 gears would be wise.

    One option that nobody seems to think of is going to smaller tires. You're going to have a much more durable rig with 36-38" tires, and some of the money you get for selling the 42's can go toward the beefier drivetrain parts. I'm as fond of big tires as everyone else, but you're way better off with the front wheels pulling a set of 36's than being in rear drive only with 42's because it's broken.

    Making the world better, one truck at a time.
    <a target="_blank" href=http://www.offroaddesign.com>www.offroaddesign.com</a>

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