Mjr Crash,
Sorry I have been away for awhile had some travelling to do. Cadillacs from 1970-1976 had the 500's. Eldorados and some rear wheel drives had them as well, the 472's are the same years. You need some 472 parts to convert from front wheel drive 500 to your application.
The drivers side manifold and the oil filter mount is the two needed parts from a 472 to use an Eldorado 500 in a conversion. Now the earlier years are the higher horsepower the 1970 500, as I remember is the biggest monster. Weighing in at 400 ponys 550ftlbs of torque and 10.5 to 1 compression. That is the one downfall with that motor trying to buy gas today to feed that compression. My ideal motor is the 71 5oo same output with 8.5 to 1 compression. If the motor is out the 500 front wheel drive model, it is identifialble by the driverside manifold, it turns and the exit port sticks out sideways, right toward the fenderwell. I always look for the tuneup sticker that is the easiest way. I'm not sure if the vin # has an identifier or not check with the cad company as well they may be able to give you some tips. If you have more questions I will get out what paperwork and read up on them again. I recently moved and locating it may me interesting. Let me know, how it goes. RR
