need help in some differences
 

What is the difference between the regular 5.0 and the HO 5.0?
What is the difference between the factory motor and a ford direct crate motor?
What is the differences between the 8.8" rear end and the 9" rear end? What are the pros and cons for each different rear end?

RE: need help in some differences
 

1)I am not 100% sure of all the differences of ths question I know that the cams are different along with the heads and intake flow's and firing order. As for internals I am not sure.
2) haaha what isnt the difference pending on what crate motor you are getting if you are getting a direct replacement its the same if you are going with a GT-40 you are getting alum heads, Forged internals, more agressive cam. Have to specify more :)
3) I think the 9 is heavier than the 8 for a con but that heavyness makes it alot more durable and able to withstand. I think they have more splines on their axles as well and the internals are different? I am not 100% sure on this one though most peopel are more than happy with the 8.8