I'm looking to put a 5.2 in my 02 Dodge Ram that has a blown 4.7 motor. Will the 5.2 bolt up to the 45rfe transmission.If not what will I need to make the 5.2 fit to the 45rfr? The truck is a 4x4.

 

No it won't. So far as I know, no one makes an adapter either. Now, the 5.7 hemi may bolt up to it.......

 

From the looks of it on Wiki, I know I know, the 45 *may* not bolt up to the Hemi as it wasn't used with it.

https://en.wikipedia.org/wiki/Chrysl...RFE_and_545RFE

In any event I think the easiest course of action will be to have the 4.7L rebuilt. What blew?

 

Pretty sure they have the same bell housing bolt pattern.... but that's only half the battle

 

The block is cracked

 

Damn.

Do you have the 5.2L already? Have you searched for a good/used 4.7L?

 

I've looked for a 4.7 but can't find anything under 1500 that's why I was looking at the 5.2 because I've found one with 145,000 for only 400

 

Just to be sure, it's the block and not just a head?

 

Yes it's the block

 

Dropping another 4.7 in there is going to be easiest...... Changing to a 5.2 is going to require a trans, and a boat load of electrical work as well, and then.... you get to deal with trying to make the gauges work.....