Hey guys...i have 2 F150s. 1 is a 1997 the other is a 1998. the 1997 has a 4.6l vin code "6"...the 1998 has a 4.6l vin code "w"...i want to take the engine out of my 1998 and put it in the 1997 because the 1998 is falling apart and needs a lot of work and the engine is brand new. what is the difference in the engines? cuz i have no clue. i thought they were the same thing. can someone help me out.

 

Basically nothing. W means it is a Windsor motor, 6 means it is a Romeo engine, same engine just different origins of where they are built. I believe the Romeo engines came with both 6 bolt and 8 bolt flywheels, but as long as you have a flywheel for the engine going in, youll be fine.

 

The difference is,
Romeo = 11 bolt valve covers and 6 bolt flywheel

Windsor = 13 bolt valve covers and 8 bolt flywheel

All the accssaries are the same as well as pretty much everything else.

 

That is ALOT OF HELP. Where do you find this 6 or W on the vin code?

 

its the 10th digit from the left in the vin number

and thanks guys...both trucks are identical. they at xl package with a 5speed and a manual tcase. so i wont have to change much...will i have to change the computer? i guess ill have to check the calibration codes on that one...but thanks for the help guys!

 

Youll be fine with computer, wiring harness and everything. Pull one out, put the other in hook everything back up and yer good to go!

 

thats awesome. thanks. the body is going quickly on my 1998 so im thinkin ill just be using it as a farm truck from now on. but id like to have my new engine in the 1997. 1997 has 200000 miles on it. the 1998 has 15000 on the engine. lol

 

Take the intake manifold off first and the swap will be 100 times easier. Unless you want to cut the core support and weld it back in... but Im not that kind of mechanic. These beast are a pain to remove and install.

 

My 10th number from the left on my vin number is a '3'!!! What does that mean because I have a 2003 4.6l super crew f-150.

 

Its the 8th digit starting from the beginning or the 10th from right to left.