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Thread: 4.10's and posi

  1. #1
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    Well it only took me 3 days, lol, just no time to dedicate to it.

    Got it done last night and what a difference! The truck feels 1000lbs lighter. The turbo still spools up just fine, actually better.
    The truck doesn't strain through the gears. 2250rpms @ 70mph, 2500rpms @ 80mph, on a 31.29" tire.
    Oh ya, the stock setup was howling for so long I didn't realize how quiet it should be, lol, the 4.10's and Yukon Posi don't make any noise.

    Now time to get to the track. I'm waiting for my replacement slick to come in and then I'll crank it up to 10psi. For those who are close, it's time to catch up, hahaha, sorry about that.
    The truck should run some low 12's with slicks, 10psi if nothing else breaks. I know I'm pushing it with this stock trans, only has a shiftkit and servo.

    i'll keep you guys posted,
    allen

  2. #2
    Join Date
    Sep 2005
    Location
    Austin Tx.
    Posts
    13,138
    Are you talking about the Ave or the farmtruc? I need to get a poll going to see which dates would be good for everyone to go out to SAR. We need to all get together, its been way too long.
    1951 3100
    1984 C10

  3. #3
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    <div class='quotetop'>QUOTE(duckysbht &#064; Apr 26 2007, 09&#58;04 AM) [snapback]91457[/snapback]</div>
    Are you talking about the Ave or the farmtruc? I need to get a poll going to see which dates would be good for everyone to go out to SAR. We need to all get together, its been way too long.
    [/b]
    JJ and I are heading out there this friday, the 27th if anyone wants to join.

    this is on the avalanche, low 12&#39;s coming soon.

  4. #4
    Join Date
    Mar 2006
    Location
    Mesquite
    Posts
    8,176
    We have a few guys going out to Ennis, so we&#39;ll have to compare times.

    Isn&#39;t the Avalanche 4wd? Did you have to replace the front gears as well? And if you don&#39;t mind me asking, since my 3.73&#39;s won&#39;t last forever, what&#39;s a ballpark price on parts for that kind of a swap?

  5. #5
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    <div class='quotetop'>QUOTE(DamnYankee &#064; Apr 26 2007, 09&#58;19 AM) [snapback]91459[/snapback]</div>
    We have a few guys going out to Ennis, so we&#39;ll have to compare times.

    Isn&#39;t the Avalanche 4wd? Did you have to replace the front gears as well? And if you don&#39;t mind me asking, since my 3.73&#39;s won&#39;t last forever, what&#39;s a ballpark price on parts for that kind of a swap?
    [/b]
    No, it&#39;s 2wd, luckily. I think the posi and gears cost me around &#036;575, or something like that. Plus, I can use synthetic with this posi.
    The install was a piece of cake, as long as all the parts come with the kit, lol.

    thanks,
    allen

  6. #6
    Join Date
    Mar 2006
    Location
    Mesquite
    Posts
    8,176
    Ahhh...I thought they were basically all Z71&#39;s with some embellishments.

    Anyway - hey my PCM is getting delivered today, thanks for the quick ship. Hoping for some good times tomorrow&#33;

  7. #7
    <div class='quotetop'>QUOTE(farmtruc &#064; Apr 26 2007, 10&#58;10 AM) [snapback]91458[/snapback]</div>
    JJ and I are heading out there this friday, the 27th if anyone wants to join.

    this is on the avalanche, low 12&#39;s coming soon.
    [/b]
    Wow, 12&#39;s on an avalanche
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4

  8. #8
    Join Date
    Mar 2007
    Posts
    1,705
    Allen,

    Congrats on the new mod, hope u hit those low 12.

    Do you think that will be a good mod for the RCSB 4wd?, I roll on 31" tires

  9. #9
    Join Date
    Aug 2005
    Location
    Houston,Texas
    Posts
    290
    got to get video of that run, what kinda 60 ft times before
    99 ECSB 5.3 LS6 CAM AND SOME BOLT-ONS BEST TIME 13.6@97MPH

    http://i104.photobucket.com/albums/m...wTRUCKS008.jpg

  10. #10
    Join Date
    Jan 2007
    Posts
    210
    i remember seeing your 13.0 run wen you came down to the valley a couple months ago....that thing is fast&#33;&#33;&#33;...let us know how your new setup does&#33;&#33;

    12.82@103.82mph w/1.78 60ft
    TUNED BY DAN

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