Posted by Don Daynes on December 13, 2001 at 18:27:59:
In Reply to: Re: thanks Troy and Wietse, plus more ??'s posted by Jim Davis on December 13, 2001 at 18:12:23:
The 3453cc block was "based" on the M1 block. I recently got an upclose look at an early M engine on a stand. The M block is wider at the top to accomodate oil return from the wider 4 valve head. The blocks are different.