I`m new here and have a 1997 F150 4x4 4.6 w engine. The engine is shot, and want to replace it, as the rest of the truck is in good shape for a 1997. What 4.6 engines will fit in this truck, and what will I have to change to put newer engines in it. Any help will be appreciated. Thanks.

 

any 2v 4.6 from a 97-03 ford car, truck, or van will bolt right up. If it's from a car, re-use your intake and exhaust manifold. If you go with a 5.4, you will need a dyno-tune and if it's auto, you'll need a low stall converter. These are the main points... User JMC has a great write up on 4.6-5.4 swap.

 

You can only do that if the replacement engine is non-PI. If the replacement is PI, you will need a PI intake.

 

wow.. Were in the same boat except I'm doing a 98f150 4.6 v8 4x4..

200,000 km on the engine and it went due to bosch spark plugs that have 70,000km on it..

I'm having issue with my power steering pulley coming off to get my line off to then get the last of my bolts off..

Also my exhaust bolts and rusted to **** and won't budge.. not to mention they are also in an awkward spot..

I think I am going to torch them out.

best of luck with your truck.

Does your power steering pump also have a sensor on the back that you can't reach to unclip?

 

oops, sorry.. missed that

 

you also missed:

- a dyno tune is not required

- a lower stall is also not required and if the 4.6 flexplate will bolt up to the 5.4 then the 4.6 converter will be more desirable and yield a better drive experience as it transfers more power to the ground due to the step up ratio

-

 

This is quoting JMC in regards to swapping a 5.4 in a 4.6 truck:
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 Engines......??????....................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.

PCM and Tuning: it should start and run using the 4.6 PCM so if it doesn't there is something wrong with the wiring or a sensor. That is assuming t hat the 5.4 engine is mechanically sound. It is best to have a custom tune done to accommodate the extra displacement of the 5.4 when using the 4.6 PCM. 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.

Good luck, Welder....

 

so where in there does JMC say you MUST HAVE a different torque converter?

 

Lmao yall are funny as ****.

Checking jmc write up in about four or five years. Lord willing

 

Why 97-03 engine only? How about 92 and up car?