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Factory 4.10's in 1/2 ton rigs

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by mountainexplorer, Nov 23, 2002.

  1. mountainexplorer

    mountainexplorer 1/2 ton status

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    Factory 4.10\'s in 1/2 ton rigs

    I'm looking at a Blazer for sale, and the guy says they are 4.10's, but every Blazer I have parted out was either 3.73's or 3.07's.

    I also have a parts truck, about a '76, and the tag on the front cover says 4.09.

    I guess I need to just pull all the diff. covers and see whats stamped on the ring gear itself.

    How common were factory 4.10 gears in say a 1973 K5 Blazer, or a 1976 1/2 ton truck? (both have Dan 44's and 12 bolts)
     
  2. Shaggy

    Shaggy 3/4 ton status

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    Re: Factory 4.10\'s in 1/2 ton rigs

    <font color="green"> My '78 1/2 ton had 4.10s from the factory. It also came with a 6 cyl if that helps... </font color>
     
  3. Pookster

    Pookster 1/2 ton status

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    Re: Factory 4.10\'s in 1/2 ton rigs

    If memory serves me correctly, the year that they acutally made anything smaller than a v8 was the year they had taller gears than 3.73.
     

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