Please forgive me if this topic has been addressed before, and if someone could point me in the right direction i'd greatly appreciate it.
I have a 98 Expedition with a 4.6 and I'm looking into upgrades for power and fuel economy. I've heard rumors and inklings of a different cylinder head for my truck that's referred to as "Performance Improved". As I understand it those heads can be gotten off of some Crown Vics with the interceptor motor and possibly even some of the new mustangs with a 4.6 as well. Can anyone verify this for me or at least point me in the right direction.
Again, I'm sorry if this has been answered before and greatly appreciate any help or info given.
I have a 98 Expedition with a 4.6 and I'm looking into upgrades for power and fuel economy. I've heard rumors and inklings of a different cylinder head for my truck that's referred to as "Performance Improved". As I understand it those heads can be gotten off of some Crown Vics with the interceptor motor and possibly even some of the new mustangs with a 4.6 as well. Can anyone verify this for me or at least point me in the right direction.
Again, I'm sorry if this has been answered before and greatly appreciate any help or info given.