I recently bought a 2002 F150 4.2l. It is wrecked and may need a new engine. I have already found a few replacement engines, but I was thinking of either putting a 4.6l or a 5.4l in as apposed to the 4.2 as they are not much more $$. However I was wondering if it would be a simple pull and swap, or if I would have to change out the engine, trans, ecu, ect to do the swap. Any advice would be appreciated.

Thanks,

SJ

 

i think that the 4.6 and the 4.2 use the same trans and rearend and you may find that swapping the v6 for the 4.6 may not be all that difficult. i believe that the 5.4 uses a stronger trans and rearend. as far as the ecu i can't help ya but maybe this will will help you out.

 

The 4.6 only gives you about 10 more hp. The 5.4 gives you more. I have a 4.2 5 spd putting out 220 hp it will blow a 4.6 down. I also have 4:10's under her

 

But mods and everything else are cheaper for the 4.6 and you can get more power out of the 4.6.

IMO I'd go with the 4.6, but a new ECU/wiring harness maybe needed along with some other things. If you have to replace a whole lot of stuff inorder to get it in there and its going to bring up the bill then I would just stick with a 4.2, but make sure its not the 97/98 engine.

 

Hazard, I see you moved to Baton Rouge. Thats my old stompin' grounds. What part do you live in?

 

How the hell does that have to do with what I asked??? PM him and ask