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  1. #1
    Join Date
    Oct 2004
    Location
    Orange Park, FL
    Posts
    14

    TH400/Gear Vendors OD

    Anyone out there ever tried this? Seems like a cool concept. You'd basically get a close ratio six-speed auto.



  2. #2
    Join Date
    Aug 2004
    Posts
    830

    actualy...

    witha th400 youd get an 8 speed! imagine the look on peoples faces when you explain that one!

  3. #3
    Join Date
    Jul 2002
    Location
    Mesquite, TX
    Posts
    4,735
    Country Flag: United States
    Erm... the TH400 is a three-speed auto.

    Anyway, several folks over on Team Chevelle have the GV setup and seem pretty happy with it.

  4. #4
    Join Date
    Oct 2004
    Location
    Orange Park, FL
    Posts
    14
    I was looking into this because I wanted to go with the more durable 400 instead of a 700 or 200. I'm planning on a ZZ502, and I just don't have the same confidence with a 700 or 200 taking the torque. I'd rather spend the $$ once and build it bullet-proof rather than worrying about breaking something. Plus, the 1st-2nd gear difference on the 700 is pretty steep. I calculated that with the 400/GV, I can run 275/40-17's, 4.11 gears and still only turn ~3100 rpm @ 70.

  5. #5
    Join Date
    Aug 2004
    Posts
    830

    woops

    i dont know why i thought a th400 was a 4 speed. oh well my mistake sorry to misinform

  6. #6
    Join Date
    Aug 2004
    Location
    Ontario, Canada
    Posts
    2,274
    Country Flag: Canada
    Check these trannies out. It may be easier/cheaper than a GV OD.

    http://www.transmissioncenter.net/4L80E.htm

    Ken
    If there is a hard way to do something, I'll find it!
    My other car is a Vega.

  7. #7
    Join Date
    Oct 2004
    Location
    Orange Park, FL
    Posts
    14
    I didn't know you could get a NON-ELECTRONIC 4L80E! I thought you HAD to have a computer or something to use this.

    The 400/GV setup would cost around $3400 and 4L80E is $2900.

    That's $500 and less complication.

  8. #8
    Join Date
    Aug 2004
    Posts
    211
    I have a T-400 with an Eagle OD bolted in place of the tailshaft. The eagle was a Gear Vendor copy (made in the US) and at the time had some advantages over the GV piece. Dont think they are in business anymore. In my 2nd gen T/A we had to do a lot of cutting and welding to get the OD unit to fit up in the tunnel. A lot. In the end we just cut the factory tunnel out and bent a new (wider) one up and welded it in. So you need to ask GV if the unit will fit in whatever car youre going to put it in without major work.
    You will have a similar issue with the 4L80E, but the clearance issues will be up where it attatches to the engine. The surgery will be a lot less than the bolt on OD. I like the 4L80E solution myself.