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Auto trans ratios

Discussion in 'The Garage' started by DavidB, Nov 24, 2006.

  1. DavidB

    DavidB 1/2 ton status

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    Searched a bit, no immediate luck. Anyone have the ratios for the various GM autos handy?

    I have an 88 K5 (sig) with a 700r4 that sees time in rocks, dirt, and sand. 1st is too low, and 2nd is too high for sand. My brother's truck is 4.56 with 39" tires and a th350, seems to work well, but the extra beef of a 400 would be nice, depending on ratios. ratios/input?

    Thanks - David
     
  2. grimjaw

    grimjaw 1/2 ton status

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  3. bear76

    bear76 1/2 ton status

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  4. DavidB

    DavidB 1/2 ton status

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    Thanks...looks like 400 and 350 ratios are pretty close. I thought I'd heard that the 400 had wierd gear spacing, and robbed more power...?
     

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