80 - 1000+, depending on which model of Cummins diesel engine you had in mind.
325 stock
if it is v8 320hp
About 137bhp at the back wheel
122 HP at 11,800 rpm.
I don't own a 2001 Cummins engine anymore, but when I did, it was a Signature 600, rated at 600 horsepower at 2100 RPMs. Your 2001, we can't say without knowing the model of engine you have.
it has 175 horse power
it should have about 115 to 120
12 quarts
500000000 h.p.
245-250
$ 40 from Rockauto.com
12 quarts 15w40