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  1. 3.0L Duramax
    From Sierra reveal: TRANSMISSION & AXLE Type: Hydra-Matic 8-speed automatic (2.7L) Hydra-Matic 10-speed automatic (5.3L, 6.2L, 3.0L) Gear Ratios 8L90 8-speed 10L80 10-speed First 4.56 4.70 Second 2.97 2.99 Third 2.08 2.15 Fourth 1.69 1.77 Fifth 1.27 1.52...
  2. Upcoming GM Diesels
    What´s next for GM and their Duramax 6.6? We are now hearing that the Defiance foundry is soon ending with greyiron blocks. From were will GM then take the blocks for the Duramax 6.6? It´s been mentioned that a upgrade in Defiance would be too costly. Upgrade to what? I think the just...
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