looking at an 03 ram 3500 what is the mechanical diff between that and the newer 04-05 rams 6spd trucks,if any?

 

04.5 and up has 325 hp and 600 fpt and a cat converter...

Rob

 

and a 3rd injection event which causes less fuel mileage

 

Different pistons, injectors, exhaust manifold, slightly different head.
Obviously different programming. Different turbo also.

 

If the '03 you are looking at is a late truck, it's the same as early '04s. There was a major engine change during the '04 model year. It was at 12/31/03. The CY '03 built '04s were the same as late '03s. Look at the sticker on the valve cover of the engine. If it's says 305 hp, 555 ft pounds torque, then it's an HO engine and has the good 48RE trans (if its an automatic). IMO, the best of the third gen. Better fuel mileage than the later 325/600s & good runners also.

 

Yes, don't forget the early 03s had the 47RE auto tranny.

 

cool thanks guys,the one im looking at is a 6spd truck so it should be the h.o.,correct?

 

Yup..........

 

what about an 03 with a 5sp? did those have any issues?