Will the crankshaft from a 366 Chevy engine fit 396 engine?
Yes, the crankshaft from a 366 Chevy engine will fit in a 396 engine. The 366 and 396 engines are both part of the Chevy big-block engine family, and they share many of the same components, including the crankshaft. The main difference between the 366 and 396 engines is the bore size, with the 396 having a larger bore diameter than the 366. However, the crankshaft is the same for both engines.