Spent the afternoon cutting out the pieces to make the adapter. The 4 cyl. cover is considerably shorter than the SBC cover. I cut flat pieces of the SBC cover to make filler panels for the difference in length.
The bolt holes on the flat side of the Mercruiser flange will even line up with the ones on the V8 flange which really helps with getting the two pieces indexed. The wavy side of the 153 cover will require several small pieces be cut to fill small gaps.
I've decided to have the bolt holes in the V8 cover filled so I can drill and tap them for studs to fasten down the actual cover. I'll also stud the L4 head to aid gasket alignment and simplify bolting down the finished adapter.
Wish I knew how to post pictures. It's gonna' look really neat!!!
