Trans help

Discussion in 'The Garage' started by RATAH, Aug 26, 2002.

  1. RATAH

    RATAH 1/2 ton status

    Aug 10, 2002
    Likes Received:
    i have a 1985 K5 blazer
    motor 350,elderbrook intake,Quadrajunk 4 barrel, flowmaster headers, gotta save some $ for dual exuast,
    Goodyear Workhorse 10.5x31x15 saving for bigger 1's
    trans 700r4 with a 208 transfur case
    im looking for info
    on using a 350 or 400 trans,
    i had the 700 rebuilt and it worked fine for 2 weeks
    now it wont go into 3rd gear,
    the guy is redoing the valve body,
    but from what ive read the 350 and 400 trans are much better
    please give feedback,opions,and howto's
    also would my transfur case work on a 350 or 400 tranny?
    is the 208 a good case?
    im very new to 4 wheeling
    and wanting to learn, but gotta have it running first,,
    Thankyou all for your time and help
  2. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Feb 17, 2000
    Likes Received:
    Welcome to CK5
    Yest the TH350 and 400 will take a hell of a beating but the 700r4 can be made to work. The very first thing you need to do to make any tranny survive is put a BIG cooler on it. Heat is what gets a tranny 90%'s of the time. Stupid stuff like neutral drops us usualy the rest.
    Heat hardens the seals then they fail to hold pressure. once the pressure drops then the clutch loose clamping force and start slipping.

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