4.0 to 4.6 swap question

[Dad]

Is there a grocery list so to speak for something like this? What you need, what you can re-use, what other engine/trans will work, etc. Like does it have to be out of a Mustang? Can it be Crown Vic or pickup? What the approximate cost should be for each?

Not that I am gonna do this, but since I will now have a manly garage.......

 

[RED09GT]

With the right mount or adapter you can bolt in almost any Ford 4.6 (or 5.4L) into an S197, the real question is which ones are worth the effort. Transmissions, for anything other than the OEM ones, there will be custom wiring, driveshafts and cross member required.

The mustang had the only all aluminum 3V engines, the ones out of F150, vans, and explorers are the iron block.

Start searching as there really isn't a list covering that broad of the possibilities you list in your original post.

 

[JeremyH]

Do a search there have been a number of these swaps done on the forum.

 

[46addict]

I didn't know there were any iron 3v blocks. 3L2E was always aluminum and the difference between the Mustang and truck blocks is in the casting process.

http://www.s197forum.com/forum/showthread.php?t=132386

Also Crown Vics never came with 3v's to my knowledge. Just a change to PI top end in 2001 but they were 2v's until the end of production.

 

[Dad]

Reason I ask is I can pick up a complete, running (new transmission) ~90k mile 05 Crown Vic PI for about $800. According to the ad it's a 2V. I didn't know if it would be worth the trouble.

 

[Juice]

Reason I ask is I can pick up a complete, running (new transmission) ~90k mile 05 Crown Vic PI for about $800. According to the ad it's a 2V. I didn't know if it would be worth the trouble.

I don't think going with a 2v is worth the effort. 4.0 rated @215hp vs 4.6 2v @240-ish depending on the year. I have both, and the 4.6 feels a lot faster than the v6 did. I just scrapped a Grand Marquis, and it tipped the scales at 3800 lbs. I thought those cars would be heavier.

 

[07gts197]

Op the easiest thing if you want to swap another motor in would be to do a factory engine swap, ie a 4.6 3v with the factory harness swap to make it all plug and play. Now that is labor intensive though. Another idea would to go with the frpp coyote control pack but I dont know how much harder it would be to swap than swapping a 3v for a coyote. It uses its own harness to make it plug and play but would anything pertaining to the v6 harness affect anything I dont know. It actually may end up being easier than swapping in an entire new harness.

Another thing to consider is needing a new transmission (manual), shifter, brake/clutch pedal assembly if swapping from auto, clutch resivoir, drive shaft and rear end among other small things that will drive up the price.

 

[Sky Render]

You're going to want to swap the rear axle, too. The 4.0s didn't come with 8.8" rears.

 

[Pentalab]

You're going to want to swap the rear axle, too. The 4.0s didn't come with 8.8" rears.

Correct, the 4.0s came with a 7.5" rear.... don't even think about using it with a 4.6L eng.