Slick 60's

Hello All,
The 77-79 Ford engines were the same block as far as the 351m and 400 goes, correct? Meaning the heads and intake are the same on both engines. Or the whole block is the same as well?
Thanks for the info.

B.

yes I have the 400m in my 78 it was originally a 351m, the only difference was the rotating assembly. Great Engine too, we had over 400k on the 351 before rebuild, the C6 behind it was well over 500k, just rebuilt that last year. the rear diff is ready to go and thats next lol pinion brg is worn out from al lthe hard work and hard miles as well as the leaf springs

Here's a good site, with lots of info that you never knew you wanted to know.
http://home.earthlink.net/~bubbaf250/hi ... ory03.html
Towards the bottom, there's a pretty useful interchange list of stuff that will swap on these engines.

The difference between the 351 and the 400 modified motors is the crank and rods only. other that that they are the same. I found this out when i thought i had a 400, but really had a 351 and put the wrong crank in it. it took some time to figure out what was wrong, but we figured out that someone had swapped valve covers. just goes to show that you cant trust anything but the casting number on the block.

yes they are do you need a 351m. i have one for sale. complete head to toe except the starter.