92 Sierra SAS frame off

Discussion in 'Full Custom Suspension / Cages / Fab' started by 92Sierra, Oct 20, 2011.

  1. 92Sierra

    92Sierra I'm Awesome

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    So I have been collecting parts and rebuilding over the last 6 months for a SAS on my 1992 GMC Sierra. I've had friends go the IFS lift route and then decide to do an sas. So I decided to jump straight to a SAS. I haven't torn into the tuck yet, im just getting everything ready to do everything at once for the swap. I will try to cover all the stuff ive done so far and update along the way. Can't wait to the swap, i'm damn close to getting everything.

    Overview/Plans:
    Engine - crate 350 edlebrock intake, headers
    Front axle - 1976 chevy flaptop dana 44 with 6 lug swap completely rebuilt
    rear axle - 1996 K1500"HD" 14b sf 4:56 gears, detroit locker, new everything
    Tcase - np241c from 1990 blazer bolt on SYE Flange
    Trans - nv4500 swap (6.34 low gear)
    Tires - 35x12.5R15 M/T MTZ's
    Rims - *15x8 pro comp steelies
    SAS Brackets - ORDesign sas kit
    Shocks - Bilstein 5125's
    Frame - off 92 C1500 new Body mounts, xmember and coil bucket delete, plated in




    Couple pics of how the truck looked in the past up till now

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    after paint job
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    28136_10150186341970147_842875146_12352815_7562412_n.jpg
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    1976 Dana 44 from a chevy 3/4 ton. 4:56 gears, open
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    Knuckles milled, drilled and tapped with lifetime balljoints
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    WFO Concepts raised steering arm
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    Northwest Fabworks 1.5" x .375" wall DOM tie rod....beefy!
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    Hubs/rotors primed, painted. I took the spindles, hubs, locking hub and brake backing plates from a 1985 corp. 10bolt and swapped them over to the 44 to keep my 6 lug setup. I then drilled the hubs and rotors to accept Dorman#610-332 14mm studs. I used a 19/32" bit on the hubs and 41/64" on the rotors.
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    Ceramic high heat paint on the calipers
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    Everything assembled with all new bearings, seals, u joints brakes, etc.
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    14 bolt semi float from a 96 K1500"HD". came with 3:42 G80. upgrading to 4:56, Detroit, complete install kit and all new brake components
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    detroitlocker.jpg

    Bluetorch Fab 1/4" & 3/8"ring diff cover
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    Last edited: May 27, 2013
  2. 92Sierra

    92Sierra I'm Awesome

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    anyone know how to include pictures in the thread? dont want any of this attached thumbnail stuff.
     
  3. dirtyhick42

    dirtyhick42 I am not a chick

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    photobucket
     
  4. 92Sierra

    92Sierra I'm Awesome

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    thanks! pictures will be up soon.
     
  5. 92Sierra

    92Sierra I'm Awesome

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    Front lift: 4" BDS 47" long Chevy leaf springs and ORDesigns SAS brackets
    P9160157.jpg
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    Rear hangers
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    Front hangers
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    Extended Kevlar, Stainless, Vinyl brake lines
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    Rear lift has stock springs with AAL's, poly bushings and WFO Concepts 5.5" lift shackle flip
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    Northwest Fab perches and plates
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    Np241c 27 spline from 1990 K5 Blazer, got to swap the 32 spline input gear from my stock t case.
    picked up a cable, hoping to use it as a shifter so i can keep the shifter location on the drivers side
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    Northwest Fab clocking ring
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    1993 chevy NV4500 with 6.34 low gear.
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    Cleaned up and painted
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    Planning on 315/75R16 KM2's
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    Here's what I have in mind for rims, let me know what you guys think.

    M/T Sidebiters
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    M/T black calssic lock
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    ATX 186 Slot black
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    Raceline 981 Raptor black, leaning towards these but not sure.
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    Eagle alloy series 101 Black
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  6. LoudnLifted88

    LoudnLifted88 Small Block Grim Reaper

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    Mt classic lock in chrome would look awsome
     
  7. bggrnchvy

    bggrnchvy Supporting Member

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    Make sure you're stock t-case is a thin input bearing unit, like the p-drop you want to swap in. If it's not you can't just swap the inputs. The gear pitch on the planetaries is different. You may be able to put the whole planetary unit from your 92 case in the p-drop unit.

    IMO avoid the rear 1350CV. Just run a 1410 single joint rear shaft, there's plenty of length to make it work.
     
  8. Vigh_J

    Vigh_J I'm Awesome

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    The M/T Sidebiters are SAWEET!
     
  9. 92Sierra

    92Sierra I'm Awesome

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    I looked into the bearing situation before i bought the Tcase. The Blazer case, which I have torn apart right now, is the wide input one. I've talked to a couple shops and im 95% positive my stock one is the same.

    As for the driveshaft I havent ordered one yet but i already have a 1350 yoke for my 14 bolt bought and machined for u bolts so looks like i'll have to stick with it I guess. thanks for the input though! :)
     
  10. bggrnchvy

    bggrnchvy Supporting Member

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    Your 92 case should match, hence why I suggested verifying. They were supposedly all the same until 93. I may have gotten the 16mm and 24mm bearing widths backwards for the year range however.

    On the yoke, run what you have in that case. Those CV's just all eventually break is all. I've blown two 1310 front CV's and one front 1350CV. The pinion u-joint was a 1310 the whole time and it lived. My rear shaft has been the same 2 peice 1410 since I did the swap on the same u-joints as well.
     

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