djl

2003 Expedition, 4.6L V8. How can I determine valve configuration without pulling the valve covers?

torkum

All truck 4.6s are 2V 97-03

djl

Thanks; that's what I thought but some on another forum thought 3 valve but were not sure.

blackbetty

3v 4.6 motors came out in 05 in the stang as far as I know and will be in the 09 f150 which is suggested of putting out numbers close to the 5.4. The 4v has been out since the early 90s and is huge compared to the 2v motor. It came in the cobra, the mark viii and the aviator to nave a few.

Octane

Yup, its a 2-valver. There should be a tag on the airbox that says something like "4.6L 2V".