I am wanting to know what the difference in these two engines are? I know that the rev-up has 298 horses and the 04 has around 270 i believe...Correct me if im wrong...But im wanting to know if there is anything internally in the engine that is different sush the valvetrain, injectors, etc...


If you could help me out on this that would be great!

 

03-04 has 280hp

 

ok thanks for the info! I am wanting to know if the internals were any different from the 04 to the 05

 

There is a thread on this. Supposedly the REV UPs have "stronger" internals, but when a 2005 motor was ripped open by the guys at MRC Motorsports (do a thread search for that guy's name for the exact thread). Anyway, he said that the indie of the engine looks exactly like the "older" engines. In the thread it stated that they were going to send the parts to an engineer to have them tinsel tested.

 

ok thanks man!

 

Th Rev Up motor has variable cam timing on both exhaust and intake where as in the non Rev Up is only on the intake side. It also has a higher rev limiter at 7K RPM. The Rev Up also has strong connecting rods, con rod bolts, crank, exhaust cams, etc.