Originally Posted By cudaman1969
Two questions, any problems putting the 6.1-6.4 crank in a 5.7 block,maybe cam line up? Next, how or what is used to mate the 904-727 trans to the 5.7? 5.7 is an 2007.


No problem with 6.1 to a 5.7 block, same crank different material.
6.4 machine the front of the crank to fit in an 03 to 08 5.7 or any 6.1 block. Very simple procedure.
904 to 727 will bolt up. I believe the top hole on both trans is not used.
IIRC you will need a ring gear same as a Chevy. I believe mopar sells them.
Matt