Joe,
The use of a 4-bolt block in place of a 2-bolt block is
one thing. However, I'd like to know if this engine in
question had a '6223 crank, dimpled rods, etc.. Also, of
particular interest would be the piston domes. Rectangular
port heads have larger combustion chamber volumes than
those of the oval port heads ( 107cc's vs. 101cc's ).
SHP piston domes are considerably higher, so I suspect they
wouldn't fit in the oval port heads properly. Can you find
out more about the rods & pistons? I'd like to know
more.
Knowing what we know today, I'm not at all surprised at a
finding like this. If they needed a block to make production
and a 2-bolt version wasn't available, they took what they
could find.
