Originally Posted by ford rules
Anyone ever built a 390? Ive heard that you can put 427/428 cranks in them to make it a stroker they are the same block styles. just kind of wondering.
Any help is appreciated.
I'm a bit of an FE guy, hell I have a 428cj Mach 1.
The 427 is the same stroke as a 390 so swapping in one of their cranks will gain you nothing except a forged crank. You can swap in a 428 crank which will give you a 410. Ford actually had a 410 that was just that. FE's can usually take a lot of bore so if you had a 428 crank I'd just take it up to a 428. The only thing is a 428 is externally balanced and all other FE's are internally balanced. I have 2 428 blocks and 1 390 block in the garage and a few 428 cranks. If I ever run out of 428 blocks, I plan to make that 390 a 428. :) The FE's are awesome motors as almost anything interchanges, and they were a pretty strong performer back in the day. What are you planning to put it in? Check out 332-428 Ford FE Engine Forum
its a great forum.