[Sciulli]

Can anyone tell me what the difference is between say a 6.0L and a 6.4" trans? I know the TC bolt Patterns are different. I'm looking for more of an internal difference.

 

[OBSWIZ]

6.4 has upgraded stronger parts..costs about $1k+ to get them.

 

[02Bluestroker]

They changed some internal designs of parts.