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  1. 1

    Installing a 6 Speed Allison behind a 12v Cummins

  2. 1

    Installing a 6 Speed Allison behind a 12v Cummins

    Can anyone confirm what brand of clutches these are? They came in Alto boxes labeled G3. This is a photo of the C2 and C4 clutches. The C3 are the slotted GPZs, and the C1 are G3s
  3. 1

    Installing a 6 Speed Allison behind a 12v Cummins

    Yea coming from 195 hp and 400 ft/lbs with the 6.5 turbo, to 300 hp /800 ft lbs it's more than enough power for wheeling and overlanding. This truck doesn't tow and with the aerodynamic properties of a brick, it's not winning any races.
  4. 1

    Installing a 6 Speed Allison behind a 12v Cummins

    I have been reading they have been tough to get on and off over the past 2-3 years. I saw posts from 2019 talking about the G3 supply issue. The sales guy claimed they are all G3s. With that said, I've read posts saying they can feel too aggressive at times. Would you suggest GPZs in the C1 and...
  5. 1

    Installing a 6 Speed Allison behind a 12v Cummins

    Hey guys, new here. I've been reading up on clutches for high HP builds and from what I've gathered, Alto G3s take the most abuse. Seems like most guys run a mix of GPZ for C1s and C2s and G3s for C2s, C3s, and C4s. I swapped a 12v Cummins into my H1 and after driving with a built 4l80 for a...
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