1998 5.9 Cummins specs through the 2007 5.9 Cummins.
*Additional details and more data can be found on Cummins Hub.
Quick specs: the 24-valve 5.9L ISB’s cummins compression ratio is 16.3:1 (H.O. 17.2:1). For how much oil does a 24 valve cummins take, plan on 12 quarts including filter—confirm on the dipstick for your truck.For more about a Cummins swap, 5.9 cummins hp and torque, and more, check out these blog articles—Cummins Allison| A Popular Conversion, Diesel Cummins Conversion Adapter Kits, The Popular Ford Cummins Swap, Which 6BT Cummins is Best for Your Swap, and see 1989 through 1998 5.9 Cummins specs on the 12 Valve 5.9 Liter Cummins Specifications page. Both the 12V 5.9L and 24V 5.9L engines were manufactured in 1998. About halfway through the year, the 4-valve per cylinder 24V 5.9L Cummins engine was rolled out. The older 12V engine has 2 valves per cylinder.
For stock 5.9 cummins hp and torque, 1998–2002 trucks range 215–245 hp and 420–505 lb-ft; 2003–2007 models span 235–325 hp and 460–610 lb-ft.