Comments by "James Breault" (@jamesbreault5762) on "Marketplace Deal?? Big Cam Cummins Upgrade for the Autocar Construcktor!" video.

  1. I dont think you can 650 horse out of tha ,just sayin. I had a 78 peterbuikt with a 400 big cam turned up to 500 horse and was told by cummins that it was maxed out because of piston size.
    2