How much horsepower can a 12 valve Cummins make?
How much horsepower can a 12 valve Cummins make? Adding a P7100 to the first generation 12-valve engine effectively takes the truck's horsepower capability from 350 rwhp to 600 rwhp. How long does a Cummins ISM 500hp motor last? Over 12 years, this motor has had about $7K of EGR work (valve, bellows and stuff). It is also on its 3rd Turbo for $8K. First one lasted 10yrs and 70000 miles. Second one last 9 months and 3500 miles and the third one is going strong at nearly 2 yrs and 14,000 miles. What kind of engine is in a...