Power Comparison - 6.5 TD to Duramax

Best 6.5 TD vs. 2004 Stock LB7 DuraMax tested at 4K miles and again at 14K miles (raw data).

Ron's 6.5 vs. stock 2004 DuraMax LB7 (SAE corrected)

Best 6.5 TD vs. 2004 Stock LB7 DuraMax tested at 4K miles and again at 14K miles (SAE corrected data).

Schoolcraft Power Train

Rear Wheel Performance as of June 2004, prior to project engine.