2 valve or 3 valve?

[djljr]

2003 Expedition with 4.6L. How can I tell if 2 valve or three without pulling valve covers? The VIN doesn't include that information

 

[AvroAero]

I think its 4 valve. 5.4 went 3 valve in 05 if I'm not mistaken. Became 4 valve in 03. Since the 4.6's power went up in 03 I'd assume it went 4 valve from 2.
Mind you I'm not sure if the 4.6 did go 3 valve. Maybe recently since they discontinued to v6.

 

[ELVATO]

I think it was 2 valve for both 4.6 and 5.4, then the 5.4 went up to a 3 valve in 2005, and they discontinued the 4.6.

From Wiki:

1997-2004 Ford Expedition, 2-valve SOHC, 260 hp (194 kW) and 350 lb·ft (475 N·m) ratings for 1999 and later model years

 

[djljr]

Originally posted by ELVATO
I think it was 2 valve for both 4.6 and 5.4, then the 5.4 went up to a 3 valve in 2005, and they discontinued the 4.6.

From Wiki:

Thanks. I have confirmed that all truck 4.6L from '99-'03 were 4.6L. Don't know about the 5.4.

 

[Remo]

It is a 2 valve.

http://www.edmunds.com/used/2003/ford/expedition/100075675/standard.html

 

[djljr]

Originally posted by djljr
Thanks. I have confirmed that all truck 4.6L from '99-'03 were 4.6L. Don't know about the 5.4.

My bad, typo. I am sure a 4.6L is a 4.6L and now I am sure that my '03 4.6L is a 2 valve.

Thanks