Hey everyone. I've recently decided that me and my buddy are going to swap a 500 into his 1980 Fleetwood. Now I'm pretty sure that the 80 has a th400 because its the 368, and I know the motor mounts are there and the oil pan from the 368 will switch over.

My main question to you all is what other parts will i need and what and I suppose to do about the computer? This will be my first real engine swap so bare with me here.

 

Computer and FI wont work on 500 due to the extra 132 ci, So you need intake and carb from 500 and HEI from a 425. You will also need to lose intank fuel pump, replace it with sender for a non FI 77-80 model, and fabricate fuel lines to block mounted fuel pump.