Before you buy How Much Hp Does A 12 Valve Cummins Have
Best 12 Valve Cummins Tuning Upgrade 150 cfm on a stock 12-valve head), and in dyno testing has shown gains of as much as 300 hp on 2,500 to 3,000 hp Super Stock class sled pull Here's Why the 5.9L Cummins is one of the Best Diesel Engines Ever ...