I bought a L back in september of 09... and it was wrecked yada yada... i got the frame close while in school, by myself without help from my teacher...(jackass)... and have been ridin it around since early 2010... Well now ive come to realize i dont like being in a 2wd truck that i cant use during the winter... and that ill never get the truck where i want it...

So i am gonna swap the L motor over to my 97 4x4 Supercab

Sooo... correct me if im wrong... which i usually am...

When i swap my motor over, i have to or want to do the following...

1. Run my 4.6 Coil packs and wires, and make a bracket for the driverside coil pack
2. Remove the Intake runner control valve and kill it in the tune.
3. Drill and tap Intake mani crossover for ECT
4. Extend the Iac wires
5. do i have to swap flywheels means how im bolting it up to a 4r70w
6. Mount H/E and Res
7. Run an ignition Hot wire to the I/C pump
8. Swap Fuel Pumps... or Tank? and injectors
9. Mount a relay... or just run the pumps at 12v constant?
10. Get a tune...

As well as bring over the 9.75 and change te front diff gears to 3.73's...

I will also need to rebuild/build my 4r70w... or find a built one.

If i am missing anything... feel free to tell me...

My plans are to eventually put lockers in... and 4.10s for 35's when i get them...

 

good advice... lol

 

Relax, takes time for people to come around that have done it.

Transmission: See my sig, good fella there to be talking to for transmissions, look around you'll see a few recent threads from people who have bought one from him or are going to.

9.75 : Good idea, the 8.8 I had hated me twice as much as I hated it.

Save the time and money, do the 4.10s right off, or disconnect front drive shaft and use the 9.75 and bypass doing front diff twice if thats what you meant.

 

IMRC (Intake Manifold Runner Control) will not throw an engine code, at least it never did on mine.. I've got about 4k on the swap no codes. I just tucked the plug under the intake.

-IAC will definitely have to be extended.

The flexplate (flywheels are for manual gearbox) will need to be changed depending on which 4.6 you have. Some are 6 bolt some are 8. Don't reuse the bolts. They are like two bucks a piece at FoMoCo Stealerships. Flexplaces are about $25 on rockauto... On tapping the intake- I opted not to, and used a T fitting on the heater hose (one that goes from the front pass side intake into the firewall. I used plastic, but I've had an issue with it popping off. I would recommend brass if you go that route. I looked the intake over and couldn't feel comfortable tapping the metal crossover. I used a coil pack bracket off a mustang for the passenger side. I can take a pic if you want. I just had to drill one hole in it and both sides are bolted down with two bolts. A couple things I noticed that were not in the notes was small annoyances like throttle cable bracket. My 4.6 (and yours as well) are tall and metal. The 5.4s at least the NA ones have lower plastic ones. So the brackets don't quite match up. Just something to remember. Also the heater hose will be a bit different. The 4.6 has the intake coolant tubes on the rear pass side. The 5.4 has one up front so it's kind of a stretch. I'm subscribing, and best of luck!

 

some little comlications coming up but they dont look like mountains... thanks for the advice and info so far guys...

Its a 97, 4.6 romeo...

When doing the swap... what stall should i upgrade to, to keep some stress of the 4r70

 

You shouldn't have to worry about "upgrading" the stall but rather downgrade. When I did my swap I just reused my 4.6 TC (also worth mentioning is I used a 98 5.4 so not quite as much torque, and doesn't push over 700 ft pounds of torque) but have been running this setup for about 8 months with no issues. Also the rear heater tube was on the rear of the manifold for me so no worries for me. I drilled and tapped the intake crossover for the temp sensor. 3/8 NPT thread is want you want! Should be an area that is "bossed" up on the crossover, this is where you want to tap it. You may have to extend the wire harness for this though.

coil pack on the passengers side is ghetto fabbed with the original mount and a little ingenuity. Just weld an ear on the side and drill a hole.

5.4 intake had the intake runner so I just plugged it in.

Read the swap notes religiously, and maybe get a haynes or chilton book. also I reused the 4.6 wire harness with a few mods. you should be able to as well. I also didn't get a tune and have had no codes or issues. However you may want to as it should only make things better.
I deleted my precats which I think is a sound idea for anyone doing this swap, just make sure that the shop does a good job welding it together, I have exhaust leaks on both sides on the top of the pipes now
I used the MAF from the 4.6 I'm not sure if this makes much if any difference.
And finally throttle cable brackets are different so take note.

 

Dont forget to swap over the L MAF.

Phil