I am not sure what this 540 is out of I found it on Craig’s List. I do know that it came from a Chevy powered medium duty truck or bus as it came with the SAE-2 to Chevy bell housing adapter and it dose have a PTO gear behind the cover. This transmission mounts much like the originals from the sides of the bell housing it even came with mounts that bolt to the side of the transmission and bring the mounting point down to the stock mounts on the cross member. The clearance problems that I have run in to are at the back of the bell housing to mid transmission. There are two ears on the sides of this transmission that are not needed and were there for attachment points as it moved down the assembly line so I cut them off. At first I was going to raise the cab to gain the clearance needed for this transmission however now I am leaning towards the idea of notching the front cross member to clear the front pulley building new motor and transmission mounts and moving the engine and transmission down as a unit. Do to limited foot space and my huge feet the first idea that I abandon was cutting the floor boards and building a new transmission tunnel. One of the reasons I have decided to use this transmission is smoother transfer of torque. I thought this to be a good idea with all the added power and 54 year old running gear that has only ever known about 1/3 this amount of power I believe it may be the only chance it has of living for long.
