Bzzzz.

I've got one of these in my shed, next to a Rover 3.5l, it's the same engine, the block heights are very slightly higher to accomodate the longer stroke.

But after all, they are both just a Buick design that Rover bought about a squillion years ago.

The most interesting development of this engine is the Repco-Brabham F1 engine that won the world championship in the sixties.

And you can't fit one of these on a road bike, atleast not one with 700C wheels.