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quick question about 700R4's

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by rick88blaze, Aug 8, 2005.

  1. rick88blaze

    rick88blaze 1/2 ton status

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    I swapped my tranny out a week and a half ago. I got a deal on a low mileage K case 700. When I pulled mine out it had "20" stamped on the side, and the one we put in had "16" stamped on it. Does anyone know what that means? I'm just wondering.

    Thanks,
    Rick
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    I would suspect they are batch numbers, or mold numbers, or something similar.

    All the GM trannies I can think of have some sort of cast in letters/numbers that don't match the "build plate" put on them, so it's gotta be some sort of casting ID thing.

    GM loved casting all sorts of numbers into stuff. Agreed, would be interesting to know what they all indicate, but I don't know anywhere that explains them all.
     
  3. rick88blaze

    rick88blaze 1/2 ton status

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    Thanks for the info. if I can ever find out for sure what they mean, I'll post it up on here.
     
  4. R72K5

    R72K5 Banned

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    this is probably oen of those things we will never know, but a mold number sounds pretty good,

    id have to say only assembly line workers/engineers of GM would know this info

    good luck
     
  5. stump_puller

    stump_puller 1/2 ton status

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    Where is it stamped at. Because the identification tag is on the lower right side just above the pan. It is near the rear. Give me those #'s and I'll decode it for you.
     

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