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Stamped numbers on Dana 60 ring gear?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by pomai, Aug 22, 2003.

  1. pomai

    pomai 1/2 ton status Premium Member

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    I'm trying to figure the gear ratio on my Dana 60, Stamped on the ring gear is.
    9 26 79 Dana D 30316 B3R98 41-9
    9 26 79 Dana D 36799 B3R62 41-7

    Thanks Ed
     
  2. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> Both of those numbers are on the ring gear? That's odd... The last numbers are supposed to the the tooth counts for the ring/pinion, so 41-9 would be 4.56 and 41-7 would be 5.86. Possibly that ring was used with 2 different pinions to get one of the ratios? I didn't know that they could do that... I'd put my money on 4.56, I've never heard of anything as low as 5.86 in a production vehicle.</font>
     
  3. pomai

    pomai 1/2 ton status Premium Member

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    9 26 79 Dana D 30316 B3R98 41-9 is by its self on one area on the ring gear, and stamped in another area on the ring rear, just like this. One above the other.
    9 26 79 Dana D 30316 B3R98 41-9
    9 26 79 Dana D 36799 B3R62 41-7

    Thanks Ed
     
  4. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> Interesting for sure. My money says that the ring gear was used with 2 pinions to get 2 different ratios, like I said, I didn't think that that was done, but that sure appears to be the case. I'd still put my money on 4.56, but you can be sure by turning the pinion and seeing how many turns it takes on it to get the carrier to go all the way around one time. If about 4 and a half turns on the pinion gets one revolution out of the carrier, then you have 4.56s. If it goes almost six times around to get the carrier to spin once then it's the 5.86s. </font>
     
  5. pomai

    pomai 1/2 ton status Premium Member

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    It was advertised on ebay to be 4.56. Would using 2 differnt pinions damage the ring gear in any way. ring gear looks to be in good shape. Thanks very much, Ed
     
  6. tom1987

    tom1987 Registered Member

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    I would have to say it's 4.56 but that is odd that they is two diffrent numbers on it /forums/images/graemlins/thinking.gif
     
  7. Shaggy

    Shaggy 3/4 ton status

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    [ QUOTE ]
    It was advertised on ebay to be 4.56. Would using 2 differnt pinions damage the ring gear in any way. ring gear looks to be in good shape. Thanks very much, Ed

    [/ QUOTE ]

    <font color="green"> Using the two different pinions wouldn't hurt it if both pinions were made to mesh properly with that particular gear. It's not like you could get a 7 tooth pinion and use it with that ring since the gears are matched to each other at the factory, but they probably just used the same basic ring gear for either set. </font>
     
  8. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Another place you can look is the face of the pinion gear. Sometimes the tooth counts are stamped there too. Or..just count the teeth yourself. /forums/images/graemlins/pimp1.gif
     

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