This assembled 385-series big-block shows the engine to be a sizeable package. There is enough room inside the block to open the engine up to over 500 cubic inches. Note here that the valve covers fit the cylinder head directly and do not attach to the intake manifold like the FE. Like the Cleveland engine, the water outlet is vertical, but the thermostat housing attaches to the intake manifold rather than to the cylinder block. The assembled dimensions for the 429-460 are 34Lx27Wx30H.