i was wandering how hard it would be to swap my 3.0 with a 4.0 and what modification i would need to do if any to make it work? thanx

 

if u are going to do a swap go for the 5.0

 

Engine, transmission, PCM, engine wiring harness and exhaust Y-pipe are all different. Those are the major parts. Be sure to shop for a compatible year donor - a 2003 4.0L would be the best donor for your 2003 3.0L. 2001~2002 would also work without much trouble.

2003 3.0L came with either a 7.5" or 8.8" rear axle, depending on the model. The stronger 8.8 is the factory unit for 4.0's and would be a better choice for your swap, too.

 

thanx thats pretty helpful i new it wasent anything to crazy i just wanted to be sure what the main things are before i started looking for a motor. does the 4.0 motor mount to the same motor mouts as the 3.0?

 

Should be 100% bolt in and plug & play if you get the right donor. Sounds like fun.

 

if you get a donor truck you should be able to just unbolt everything and bolt it all back in.

 

What about tranny, can you use the same tranny from the 3.0 and swap a 4.0 in?

 

old thread... but ok.

AFAIK any ranger thats auto above 2002 is a 5r55w.

 

Yeah but the engines have different bolt patterns so he would have to get a 4.0 tranny.

 

ok thanks for correcting me, i wasn't really sure, i just knew the trans themselves were the "same".

i learned stuff today. :)

 

This was something I have thought about in the past as well, if you do it be sure to post up some progress.

 

The trans are different between the 3.0 and 4.0. This is something I would consider if my engine blew.

 

if mine goes. Im putting in a 5.0 from an explorer!

 

3.0 trans is 5r44e, 4.0 is 5r55e

 

Does anyone know what happens come smog time when you bump up to a diff engine in California based on experience? =)

 

By plug and play are you meaning the connections that are on the driverside, below the brake master cylinder? and are all the connections pretty much located in the engine bay?