- May 18, 2022
- Reaction score
- Tempe, AZ
- My Car
- 351c 2v, FMX Transmission. Ordered from Sanderson Ford in Phoenix, 99k original miles.
Hey guys, doing a little proactive research and wanted to bounce some questions off the experts. Buddy of mine has a 390 that he pulled out of his f-100, that originally came out of a car. I would guess a Tbird? Apparently it has been bored to a 428, which from what I have read is kind of pushing it, so I am thinking its just a 428 crank effectively making the 390 a 410. The 351c 2v in my mach 1 has already been rebuilt by the PO, quite a few years ago, with one of the cylinders sleeved. I don't have any of the rebuild paperwork and the PO couldn't remember much info besides the sleeve part. I believe I am going to need a valve job, but waiting for the compression test results. My question is, what would I need to do if I decided to put the 390 in my mustang? It was running when he pulled it, and is just going to give it to me as he has no use for it. I am assuming my auto FMX wont bolt up, but the C6, if that's what it is, also comes with it. What all am I looking at to make the swap work? I know the things like motor mounts and most likely tranny mounts will need to be changed, and probably the radiator? Just wondering if that 390 is even a viable option.