When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I would think the 2005 5.4L would have addition wiring required. Maybe you could reinstall your 2002 heads on the 2005 block? Sorry I cant give you any real info, but I am interested about the compatibility of the 2v and 3v 5.4L engines as well.
Why would you want to? The 05 will have all those fun cam phazer issues to deal with. Also my guess is the trans wont bolt up either if you plan to keep the 4R100..
have fun pulling the motor i just rebuild mine and it is a TIGHT. throttle body and intake must be removed otherwise there isnt enough room to get the oil pan over the cross member. If you decide to rebuild the motor youve got PM me and ill give you some pointers.