b.b.c. interchangeability

[Jjay78]

i have a couple 454's and was wondering if a crank designed for a 2 piece rear main can be swaped into a 1 piece rear main block? or vice versa. also what is teh difference between a mark 4 mark 5 and mark 6  454?? and how can you tell qucik and easy between the 3?? thanks

[Blake Scheuneman]

No

[Blake Scheuneman]

I'm pretty sure lol

[hot rod heep]

1 and 2 piece rear main can not  be swaped from block to block    the  flex plite  bolt patern is diff to   the 1 piece is smaller

[randycrane79]

i get all my info for motors and nubers for what they are and specs off a web site called www.mortec.com

[Jjay78]

link doesn't work man.

plus how do ya tell weather it's a mark 4 5 or 6???