If it's a standard BB30 crankset, it cannot fit into an English-threaded bottom bracket.

BB30 and English bottom brackets are both 68 mm wide. You can't fit reasonably-sized bearings for a 30 mm spindle inside a 1.37" bottom bracket shell, which means you'd need to mount the bearings outboard. But if you do that, you increase the effective width of the bottom bracket and the BB30 spindle won't reach through to the other side.