I was just wondering if anyone has stroked their 4.6 or if i would just be waisting my time. Just wondering because i have a 4.6 that i got for 100$ out of a crown vic. I cant decide if i should build the 4.6 or if i should just buy a 5.4.

 

build a 5.4 dont waste yer time with a 4.6

 

Why stroke it when you can get a 5.4 for less than it would cost to stroke the 4.6?

Regards

Jean Marc Chartier

 

Find a cheap 5.4 and rebuild it!

Phil

 

stroke it to a 5.0 and port and polish ur heads

 

stroker kit makes it a 4.8l a 30 overbore with the stroker kit makes it a 5.0L if u go with the big bore kit u can get it sleeved to a 3.75 then with the 3.75 stroke ur pretty much a high reving 5.4L well breathing motor.

 

I say go with it. I have absolutely no experience with this kind of stuff, but it's different. You'll probably end up going over the price of a 5.4, but again it's different.

 

HI!... Don't waste your time with a 4.6. Just buy a 5.4 and build it up.

 

With the stoked 4.6 all you have is a bored out 4.6 with a slightly longer stroke. You go from 3.56 to 3.75 inches. The 5.4 however has a 4.165 inch stroke and you do not need to bore it out nor sleeve it. Get the right pistons, rods and forged crank and you can spin it to 6500 all day long.

Regards

Jean Marc Chartier

 

there is hundreds of terminators out there with the stroker kit with the small over bored the HPP TT drag car is running that motor in their car.

 

hey guys thanks for all the replies, this is only my second day on this forum and thank you for not treating me like an idiot. I appreciate it.
about dropping the 5.4 in my truck what would have to be done to the computer to accept the swap

 

It is kind of like building a 347 out of a 302. Why? You can get 408 cubes out of a 351.......

Regards

Jean Marc Chartier

 

Here are some notes on the subject.

Notes for 4.6 to 5.4 swap Revised 25 June 2008

Exhaust: The collectors on the exhaust manifolds are set at different angles and locations. The 4.6 exhaust will not bolt up to 5.4 manifold. You will need to have a muffler shop modify your 4.6 exhaust to match up.

Ignition: All 5.4 engines use Cop ignition. . 2000 and later 4.6 use COP ignition. 1997-99 4.6 engines use coil packs. It is easier to wire your 5.4 using the harness from the 4.6 and the 4.6 ignition coil packs if applicable. If you use the 4.6 Coil pack ignition you will have to fab a bracket for the driver side coil pack.

Engine harness: The IAC harness must be relocated to the rear of the throttle body elbow. The oil sender wire on the 4.6 may be too short so measure or test fit the harness to see if it must be extended. All 97-00 4.6 engines use some sort of intake manifold runner control valve. Remove it from the 4.6 and plug it into the 4.6 harness and bolt it to the engine some where out of the way. Note you can get a tune to remove its function and eliminate it all together. All 97-98 4.6 engines use an engine coolant temp sensor. Some use 2. None of the 99+ 5.4s use any. You will have to tap the intake manifold crossover pipe to fit the sensor. Some 4.6 engines (97-8) have two sensors.

Transmissions: the 4.6 and 5.4 have the same bellhousing bolt pattern. That means that all the transmissions will bolt up. All the 5.4 engines have 8 bolt crankshafts. Some 4.6 engines (ROMEO ENGINE) have 6 bolt cranks. You will need the flex plate from the 5.4.
Manual transmissions: If you don’t have an 8 bolt flywheel a flywheel from a 1997-8 4.6 Windsor engine will work. As it has 8 bolts it will bolt right up to the 5.4 crank. Remove the flex plate spacer and install a pilot bearing from a 4.6.

Torque Converters.
4R70W
ENGINE Stall Speed Multiplication
4.2 1978-2330 2.3:1
4.6 2105-2505 2.3:1
5.4 1830-2190 1.9:1

4R100
All ?????? 2.2:1
If you swap a 5.4 into a 4.6 engine bay and use the 4.6 converter you will multiply the 5.4's torque at a higher rate and at a higher stall speed which will put the torque at the transmission input shaft close to the limit if not over the limit of the 4R70W. The 99+ 5.4 produces 350 ft/lbs of torque. 90% of that is available at 2000 rpm. The stall speed of the 4.6 is above the 2000 rpm range so more than 90% is available. 350 ft/lbs x 2.3(4.6 multiplier) x 90% is 724.5 ft/lbs.

Tuning: It is best to have a custom tune done to accommodate the extra displacement of the 5.4.
You should be able to use the 4.6 MAF as any competent tuner can adjust for it. It is always best to discuss this with your tuner.

Knock Sensor:
The 97-98 99 4.6 uses a 2 wire knock sensor. The 97-98 5.4 has 3 wires of which one is a ground. Both have a Yellow /red wire to pin 57 on PCM.
1997-98-99-2000-01 Yellow/red to 57 on PCM 4.6 Same for 5.4.
97-98 Pin 91 feeds power for 4.6 and other components. Same for 5.4
1999- 2000-01 Pin 32 for power. Same for 5.4
2002+ Cannot confirm.



Accessories: Some engines have 8 rib serpentine belts and some have 6. Be sure to check so that your accessories have the correct pulley.

Misc: Both engines use the same engine mounts and their location on the block are also the same so your old ones will fit. Unbolt and place aside the AC and PS. You need to remove the intake manifold for the engine to come out. Yes there are 3 bolts on the starter.

Regards

Jean Marc Chartier

 

some people prefer to work with what they got rather than swap it out for something different.

 

I have a 4.6L stroked to a 5.0L