different valve relief cuts in the top of the piston. 5/6mge have piston cut for 2 valve heads, 7mge pistons have relief cuts for 4 valve heads. Blocks are alomost identical according to my engine consultant.
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.