hperin
03-25-07, 07:10 PM
I have a 390 in my 63 Cad and its time for a new motor. I am thinking of replacing it with a 500 and was wondering if anyone had attempted this. Any advise is appreciated.
| View Full Version : Do 390 and 500 have same block?? hperin 03-25-07, 07:10 PM I have a 390 in my 63 Cad and its time for a new motor. I am thinking of replacing it with a 500 and was wondering if anyone had attempted this. Any advise is appreciated. 90Brougham350 03-25-07, 07:36 PM The 390 and 429 are the same family I believe, but are completely different from the 500/472/425/368 family. The Ape Man 03-26-07, 07:12 PM Not even close. cjarvis 04-07-07, 03:58 PM will not work, look at 425 or 472 also, these engine run in the same family as the 500, I just swaped a 500 to a 425 minor differences. Thanks Night Wolf 04-10-07, 12:41 PM Why would you want to swap a 425 inplace of a 500? | |