Re: How much overbore?

Posted by Jack Vines On 2010/12/17 15:34:55

In the greater scheme of things, custom pistons are not a big expense. Egge cast .030"s are $400 and any bore custom forged pistons are $800. That's only 10% more on a full custom engine build.

It has been pointed out before, but the Packard V8 block has the same 5" bore center as the 500" Cadillac V8, so certainly feasible for S-P to have built a 500" Packard V8. The main bearings would have had to be enlarged to at least 3" diameter for sufficient crankshaft overlap.

jack vines