we didn't check the deck thickness yet but I still can. It is a undecked 270 (11.3667) but the 248 shows 11.11 deck height vs the 11.25. A 248 would be super thin at 3.960. The old block had .089 left in one spot. A .125 cut of the deck should be acceptable per my 55 Wayne catalog. Still need to cc the 302 head with the chamber ground open.
