Okay, so you do not make the same mistake I did. When you change to a 4.0 block you need to make sure you change some various things that are different widths. I did not change my spacer on the flywheel plate which is 4mm difference and it burned my transmission front pump. A very costly mistake. If you want to PM me when you start this I will help you with what to look for.

 

I am still waiting for all of you 4.6L engine owners like me to form an alliance and tell land rover to shove these 4.6's up you know where and make land rover once again something good...

 

I have a horror story as well. We bought a 04 with the 4.6 that had 94k on it when we bought it. The dealership where we bought it, a local Ford dealership, advised us to purchase a warranty. They told us to buy a good one, so we went with Ford ESP. Good thing we did. Within 45 days and 500 mi, we had back to the dealer with a blown engine. Warranty folks were a little put out, but the dealership went to bat for us. The 2k warranty was worth a 10k engine. Took about 5 weeks to get the engine from Atlantic British (Roverparts.com) but it was worth it. If you dont have a warranty..get rid of it.