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shift kit

  1. How T-400 works?

    Transmission - Rearend
    OK, I have been driving manuals for years and like how you can slow down by simply letting off gas, upshifting, because the gears are "locked" there until you tell it what to do. Today I seafoamed my motor and was running around high rpm and noticed with my TH400, first gear does this! It...
  2. Powerglide Questions

    Transmission - Rearend
    Alright, so I sold my Camaro and bought a 1969 Impala. It has the matching numbers 327 and Powerglide still in it. What I want to know is what the best shift kit is, and what speedometer gear to use, as I put bigger tires on it. I don't have the rear end code as of right now, but the VIN is...
  3. 4L60E shift kit-cpu reprogram?

    Transmission - Rearend
    1998 Chevy k1500 5.7 350 4l60e trans. I was told that after 97 in these transmissions.. if you install a shift kit the computer must be reprogrammed or flashed to be able to control the trans. Is there any truth to this?
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