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Thread: 1991 3/4 ton suburban. Bought it. Now time to build it.

  1. #21
    Join Date
    Oct 2010
    Location
    TN
    Posts
    54
    I intend to have the guy that made this bumper make one similar for my suburban.

    IMAG0606.jpg

  2. #22
    Join Date
    Oct 2010
    Location
    TN
    Posts
    54
    Got back to the shop from picking up T-shirt from out t-shirt guys and Fedex had dropped off some boxes. The Stiker 170 lights will be cutting the night like a lazer beam later tonight. Got the wiring harness.

    Also got some nice air pressure gauges to keep in the trucks.

    DSCN3208.jpg

  3. #23
    Join Date
    Nov 2011
    Location
    Costa Mesa, CA
    Posts
    29
    Looks like a fun project and great looking Suburban!
    Are you sure that you have the 700r4 transmission? The 700r4 only came in the 1/2 tons. A th400 came in the 3/4 tons up till very early 1991, then they put the 4L80e in the 1991 3/4 ton Suburbans.

  4. #24
    Join Date
    Oct 2010
    Location
    TN
    Posts
    54
    No I am not sure. The $L80E would be better, yes?

  5. #25
    Join Date
    Oct 2008
    Location
    Whistler BC
    Posts
    1,962
    Yes.
    '98 Dodge 3500 CTD NV4500 complete with a crap load of goodies. "Bought, not built"
    '11 Rubicon Unlimited OME heavies
    '07 Adventurer 10T
    No kids, 3 dogs, many surfboards...

  6. #26
    Join Date
    Nov 2011
    Location
    Oklahoma
    Posts
    33
    Quote Originally Posted by John Willis View Post
    No I am not sure. The $L80E would be better, yes?
    Best way to be sure what you have is to get under it and count the transmission pan bolts. 4L80e is 17.

  7. #27
    Join Date
    Nov 2011
    Location
    Costa Mesa, CA
    Posts
    29
    The 4L80e is Far superior to the 700r4. In fact if you are running a 700r4 I would question if it would even live long with your 37" tires. Like I said, GM never put a 700r4 in a 3/4 ton, so you either have a th400, a rebadged 1/2 ton (you have 8-lug axles so probably not the case), somebody made a poor decision on a swap, or you have a 4L80e (probably/hopefully the case).
    Does your Sub have overdrive? If yes, then rule out the th400 as it is only a 3 speed tranny. Also as previously mentioned, climb under the truck and count the trans pan bolts &/or look for large electrical plugs on the trans body (the 4L80e is electronically controlled by the PCM).

    Good Luck!

  8. #28
    Join Date
    Oct 2010
    Location
    TN
    Posts
    54
    Got the Stiker 170's in place. Chomping at the bit to see what they look like in the dark. Dot a huge box from LMC truck today. Replacement headlight units that take removable bulbs, rear door rubber, LED dome light replacements, markerlight and parking light replacements, TAIL light LED packs, 2nd battery tray and on and on.

    Got a new battery and 2nd DEEP cycle battery.

    Got my LightForce 240 Blitzs in today along with wiring and relays:

    DSCN3292.jpg

  9. #29
    Join Date
    Oct 2010
    Location
    TN
    Posts
    54

  10. #30
    Join Date
    Oct 2011
    Location
    Tucson, AZ
    Posts
    412
    good progress. Im curious to see what tranny u have im guessing the th400, but either the th400 or 4l80e would be better than the 700r4.
    1994 K2500 Suburban 6.5 turbo diesel, 4l80e, 14bff, g80
    2000 Ford F250, v10, 4x4
    2010 Toyota Carolla S (My DD)
    2013 Ford Fusion (Her DD)
    1992 K2500 Suburban 454tbi, 4l80e, 14bff g80 (Sold but miss it)

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