Hi so I have a 2000 f150 with a 4.6l and it has developed a rod knock I’m looking at just replacing the engine. I found a 4.6l from a 97 and I know there are a couple differences between them. What all would I need to do to make it work in my 2000

 

I don't know, but there's probably no shortage of 4.6's that are drop ins...... I'm always amazed that people will consider something that's not a direct replacement...... It's usually because they got something free somehow

 

You're going backwards. IMO, the biggest issue is that the 2000 has PI heads, and the 97 does not.

I personally would spend more time looking for a newer motor.

 

Although true for 5.4 V8’s, 2000 model 4.6 F150’s did not utilize the PI heads- that was reserved for 2001+.

97 and 2000 4.6 should be similar enough to make the swap relatively hassle free.

 

2000 models should be PI headed. They got the bump to 220 horses. Maybe a mid-year change, but it definitely happened.

I’m sure COPs rather than twin coil packs will be the obvious difference.

Either way, a 97 model has enough differences with sensors to be a PITA.

 

Neal, the 2000 is a transition year, that is correct. It could have either. It was a late year change. Ford did the same thing in 97 on the Explorer. You might have a GT40 head, or you may have a GT40P head.

There are "some" 2000's that have shown up with PI heads.

Either way, I wouldn't use a 97 motor in a 2000.

 

PO said the engine in my HD had a knock so he dropped in a GT500 short block. I have receipts if you are interested.

 

Oh yeah, and that thingy on the top.

 

Oh man is that an FMU? The '90's called. They want their mods back.

 

I'll give 'em back when I'm done.