a 10.200 deck with 7.100 rods and a 4.500 stroke only leaves .85 for compression height on the piston. I don't think you can go any less than 1.06 or so, so I think there is something wrong with the info.

Are the pistons domed?

What is the deck clearance?

The set of b1 originals I have only go 375 at .650 and fall off from there.


Just my first thoughts.

Definitely no expert.