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454+3.73+35" Good idea?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Blazer79, Apr 26, 2001.

  1. Blazer79

    Blazer79 1/2 ton status

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    454+3.73+35\" Good idea?

    OK guys, I need your opinion on this.

    My original plan was to go with 3.73 gears with 33" tires, but since I now have a 454 (not installed yet), will everything hold up if I go with 35" tires once I install my 454 and 3.73 gears? Or am I looking to break something?

    I used an online calculator and the rpms would still be about 200rpm higher than my current 3.07+31" setup. What do you think?

    All opinions accepted.

    PS It's a 12 bolt rear and a 10bolt front.

    <font color=blue>//////
    <A target="_blank" HREF=http://blazer79.coloradok5.com>http://blazer79.coloradok5.com</A>
    </font color=blue>[​IMG]<P ID="edit"><FONT SIZE=-1>Edited by Blazer79 on 04/26/01 06:25 PM (server time).</FONT></P>
     
  2. bablazer73

    bablazer73 1/2 ton status

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    Re: 454+3.73+35\" Good idea?

    I would have a hard time believing the axels are going to hold up to the torque of the big block. If you are really going to push this truck, I would go to bigger axels. the 454 should have enough torque, but 4.10 would still be better.

    your right. I don't understand the jeep thing!
     
  3. CaptCrunch

    CaptCrunch 1/2 ton status

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    Re: 454+3.73+35\" Good idea?

    I agree w/ bablazer... need the bigger pigs under the truck... then would be easy to go 4.10's. I'm going to 4.10's w/ my 35's after a lot of thinking and researching... 3.73's will be a little weak for acceleration... but better on the freeway

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     
  4. AGM73k5

    AGM73k5 1/2 ton status

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    Re: 454+3.73+35\" Good idea?

    I had that exact combo. I blew u-joints and everything else regularly. I know am the proud owner of a 14 bolt rear and don't break a thing.

    ___ __ _ _ ____ __
    AGM73k5 -- ajgm1@yahoo.com
     
  5. blazbrnc

    blazbrnc 1/2 ton status

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    Re: 454+3.73+35\" Good idea?

    I had the same exact combo in my suburban a few years back. I took it to a mud drag and got 2nd place out of about 40 trucks. Mildly built 454's like low rpm's. I think you will like it. I would at least try it before you switch out the gears. As for reliability, be smart with the gas pedal and you shouldn't have a problem.
     
  6. ftn96

    ftn96 1/2 ton status

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    Re: 454+3.73+35\" Good idea?

    Not to mention your tranny will be getting some asskicking in the middle of that whole mix.

    Will work for beer, parts and tools.
    90-350TBI-TCI700-241-33"-10/12 bolt w/4.10's,
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  7. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Re: 454+3.73+35\" Good idea?

    Dont lose hope. This set up can and will work as long as you do one thing: DRIVE SENSIBLY!!! [​IMG]
     

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