How Big can a 5.2 get?

Dusterfreak said
Well, still dont know how big a 5.2 can get but mine is 323 now. Getting back together during winter...View attachment 1715283719

A sonic check will tell the machinist how far he can bore out the block safely.
stroker cranks can go larger than 4 inches. The largest I have read about in use is a 4.25 from Rod Bloomer.