Thanks noralph but what does this mean? Forged SN#, pmrs, 6637, WW, hpx, FTVB, casserly, 180/100, RR, turbo
PMRs= power metal connecting rods, started to show up in 2001 through 2003 7.3 PSD as apposed to the forged (stronger) rods the 94.5-01s came with.
6637 = Is the part number of the Wix/Napa 6637 air filter, which comes off a large Cummins application. Similar to the Big Honkin Air filter (BHAF) in the Cummins World, bigger filter, more flow (can support over 400rwhp) and better filtration
WW = Wicked Wheel, a turbo impeller upgrade to help the stock GTP38 turbo deal with turbo surge.
HPX = High pressure cross over, it is an aftermarket line that connects to two plug oil pressure rails in the head of the engine. Helps smooth it out a bit and combat romping.
FTVB = factory tech valve body, a transmission upgrade
Casserly = injector shop
180/100 = 180 cc flow rate injectors running at 100% over stock nozzle size (I think)
RR= regulated return, it is modifying the stock (deadhead) 7.3 fuel system to allow fuel to return from the factory fuel rails to the tank with the pressure controlled by an external regulator instead of the return on on the fuel filter bowl.
Turbo = turbocharger
Probably not the best descriptions but should give you the idea.