can the 4.6 heads go on the 5.4 ? if so whats the changes? cr increase? decrease? better flow? etc????

 

Some 4.6L heads can mount on 5.4L short blocks.

They are both modular motors, meaning that hte parts should be able to interchange. with just SOHC heads, I wouldnt worry with it at all.

The 5.4L navigator heads are some of the highest flowing heads out there, and i've seen many people put those heads on their blower cars since they are a 4v head and make alot of power.

There's alot of different heads and combinations out there. To many to list. Search around the internet and talk to various engine builders, thats where you best info will come from.

 

Ford GT heads are now for sale on the FRPP site get those bad boys ported and some hot cams and you'll be making some serious numbers.

Don't forget to add the block and car too::

 

so wait you can take a 2v 4.6 and put 4.6 or 5.4 4v heads on it ? or can you only do a 2v to 2v like a 4.6 2v to a 5.4 2v and same witha dohc? can some oen plase exsplain this to me?

 

according to the magazines you can put 4v heads on the 2v motor just have to swap over the front accessories to drive the extra set of cams. blocks are the same

 

Nick is pretty much right, but in some instances, some things dont match perfectly. Especially when going from a romeo block to a windsor etc....