Dmitri, our engine builder dyno'd 1038 RWHP on a superflow dyno at the Custom auto at 4700-4900 feet elevation, it was Custom auto's dyno day. If I can get more info i'll tell you guys about it, but i'm pretty sure thats the 4th 1000hp+ duramax in the country. It was on nitrous, and I think he dyno'd 777 Rwhp on #2 only.
Last edited: