I know that this has been asked need help soon!!!

I have a 97 4x4 with a Windsor motor and I am swapping a 94 grand Marques Romeo motor. I know I have to use my parts like intake oil own.eft the Romeo motor is.missing 2 sensors my Windsor motor has one under the intake in the block and one is in the head. Any help would be great.

 

Any one do I need a newer 4.6 for emissions?

 

That swap may not work in your case. You can generally put a newer 4.6L into an older vehicle, but going the other way sometimes doesn't work. In your case, the 1994 block may not provisioned for your knock sensor. Also not sure about the cylinder head temperature sensors. If that's the case, abort and get an engine that will work.

Assuming you have no issues with sensors mounting properly, off the top of my head you need to swap the following:

Oil pan
Oil pickup tube (buy a new one if it's clogged in any way)
Intake & exhaust manifolds
Heater pipe may need swapped too.

Assuming your truck is an automatic, you need to ensure the flywheel from your donor engine will fit the torque converter on your transmission. If the holes don't line up, you'll need to find one from another one from a Romeo engine. The Romeo and Windsor flywheels are not interchangeable. I learned this the hard way when swapping a 2009 Crown Vic Romeo into a 2001 F-150 that also had a Romeo. Forgot to check before trying to drop the engine in. Wasted at least 30 minutes wondering why I couldn't get them to line up before I realized that Crown Vic used a smaller torque converter. But since they were both Romeo engines, I just lifted the engine out and swapped them. Romeo uses six bolts, Windsor is eight.

This should get you started. But I've never swapped a 4.6 that old. So I can't promise you won't run into another obstacle.

 

Thanks so much in am taking to the yard and the man is going to swap me out for a newer motor from a 98 or 99 car.

 

Here's the ideal engines to look for as these have the performance-improved heads.

2001-2006 F-150/Expedition: Get the intake and exhaust manifold with it - ideally it will have the updated intake with the aluminum coolant crossover because the first design ones were composite and prone to cracking.

2001-2006 E-150: Get it with the intake, find exhaust manifolds from a 2001-2006 F-150/Expedition 4.6L

2001+ Crown Vic/Grand Marquis/Town Car: Find the intake and exhaust manifolds from a 2001-2006 F150/Expedition 4.6L

1999-2004 Mustang: Find the intake and exhaust manifolds from a 2001-2006 F150/Expedition 4.6L

Here's the catch... I think that all of these use the newer style knock sensor which is held on by an 8mm bolt. I do not know for certain if that sensor can be interchanged with the old style 12mm one. The connector is different, but nothing some cutting and soldering wouldn't fix. I see no reason that they wouldn't work. But I'm speculating. Every 4.6L engine swap I've done has been from one Romeo to another, so it was never an issue. Other option is to enlarge and tap the hole for the old style sensor.

I don't think the 02-05 Explorer engine would work for your truck. It's an aluminum block and the valley isn't as deep, so that huge intake the older 4.6 trucks use may not fit. I've swapped from aluminum to iron, but not the other way, so I can't confirm.

Or disregard all of that and just find a Windsor long block that matches what you have. For me, I'd use the opportunity to upgrade. No matter which way you go, take the opportunity to change all of the exhaust manifold studs. They can snap on their own and warp the manifold and head. When they do, they're a a huge pain in the *** to deal with. This is more common up north.

 

Sorry. Edited my previous replies. Romeo VIN is W most of the time, so I keep mixing it up in my head.

The chart below may help.