Originally Posted by sweeney
Question please. Would the new Hemi and transmission work in my 08 with the drive shaft and other componets without changing anything? Not sure if my truck is set up for the bigger engine as far as drive shaft, and transmission. I have the 4.7 and it is 4x4.
Old people rock, just not as fast. LOL.
No. Totally different computer, harness, fly-by-wire throttle body, etc. The trans and driveshaft setup is actually the same between the two lol.
Originally Posted by GTyankee
I believe that you would need to have the computer & sensors to run the HEMI engine
Ram trucks started installing 5.7L HEMI engines in Ram pickups in 2005
In 2006 the Ram 1500 started using the MDS system, the Heavy Duty Rams had the same engine, but didn't add the MDS system
I believe in 2009 Ram went to the High Speed Can Bus system, that added several more computerized components
In 2001 Ram 1500 went to the 545RFE transmission, it replaced the 45RFE
I believe in 2012 Ram started using the 65RFE transmission
Hemi was introduced midway through 2003 model year.
CAN bus was introduced in 2006.
2001 the 5.9, 5.2, 3.9 were still being used with 46RE and derivatives. Dakota and Grand Cherokee had the 45RFE behind the 4.7. 45RFE was first used on the Ram with body change in 2002 behind the 4.7 in the 1500. Programming was changed in 2003 to coincide with the hemi intro to change them into 545RFE. No difference between the two transmissions other than programming. This is why you can swap TCM's on a 2002 and get that extra OD gear.