Here is a update on my specs.
The Cadillac 472 is a .5 inch shorter from the back of the motor to the water pump fan pulley compared to a short Chevy 454.
The Cadillac 472 is 5 inches difference from the lowest point of sump to the highest point on the intake compared to a short Chevy 454.
The Cadillac 472 is 1.5 inches wider from valve cover to valve cover compared to a short Chevy 454.
All the rest is the same.
It looks good on paper. Motor mount mock up is the only thing left.

Here is two links for engine dims

http://www.carnut.com/specs/engdim.html

http://www.geocites.com/MotorCity/T...062/engine.html

Hope these links help others! ENJOY=-)