Posted 2/25/2012 22:46 (#2251812 - in reply to #2251686) Subject: Re: big cam, small cam cummins 855
Central Wisconsin
If I remember correctly it was easy to take a 315 to a 350 but it took some parts to make a 400. 315 had the same torque as 350 but was turned down at top end for fuel ecomny.
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