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Old Macks

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  1. Old Macks
    I have a 1975 2 stick direct 12 speed with a broken tail shaft in a truck. I just picked up a newer 1 stick 12 speed. My questions are: 1. can the rear section of the direct 12 be replaced with the rear section of the OD 12 while the direct trans is still in the truck and 2. if so, will that result in a 2 stick OD 12 speed (which would be ideal). Thanks.
  2. Old Macks
    Video of the engine running. The truck has 58k original miles. AQOkxkMN2oB-XzebGgEqMtQ7pvShYbvyzOYsVgq-gTcAK-icakHlypVf90zK1_RbP5KP_8I1PiCiY5jX4lo99Z9eUlObkzLBGmROA6mTXFKF9A.mp4
  3. Old Macks
    It was one of two purchased at the same time in 1975 by the TVA for use pulling a lowbed at Wilson Dam in Alabama. It is 5.88 ratio 80k rears with 20.25" brakes. Here are a picture of the 80k rears on mine and one of the sister truck which has a Cummins instead of the original 375hp V8 Mack.
  4. Joey Mack started following Old Macks
  5. Old Macks
    Thanks for all the helpful information on TVA trucks. To address a few comments: The picture shows the truck on the trailer on the way to my place. The body is off already and it is being converted back into a tractor like it left the factory. I know what 14R24.00 rubber costs and what it costs to restore a Mack in general.
  6. Old Macks
    Does anyone have information on TVA trucks? This is a former TVA truck that was converted into a dump. 1975 DM897SX with 375hp V8, 12 speed, 23/80 axles and 14R24 rubber
  7. Old Macks

    12 speed

    Old Macks posted a topic in Parts Wanted

    Looking for a OD 12 speed. I have a 2180 to trade or buy outright.
  8. Old Macks
    Looking for a bumper and fender parts. Thanks
  9. Old Macks
    Want to buy a whole or good parts of a EN510 exhaust manifold.
  10. Old Macks
    Thank you!
  11. Old Macks
    What is the part number of the one you got off Amazon?
  12. Old Macks
  13. Old Macks
    Yes, I need the canister type.
  14. Old Macks
    Does anyone have the part number or the number of a generic filter that will work in a EN510?
  15. Old Macks
    Still interested in getting enough to make two steps. Thanks.
  16. Old Macks
    I have a E9 powered Mack with a factory air clutch and the cylinder is leaking. Does anyone have a information on that set up or source for parts?

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