- Staff
- #61
Stock 24 valve's should only hit 22 PSI and made 235HP unless it was the 01+ with a 6 speed and it was 25 PSI of boost and 250HP. The 6.5 is a peppy engine off the line for the first few feet, even more so than my DURAMAX. The CUMMINS needs to build boost before it can really take off whereas the 6.5 will just blow some black until boost comes in. The higher compression ratio of the 6.5 allows it more initial grunt, but once they are both on boost it goes to the CUMMINS.