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.
Just to verify 351/400 engines.
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shawns fords
- Posts: 1111
- Joined: March 31, 2007, 11:34 am
- Location: Foxfield Colorado
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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.
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.
My "Slickitis" affliction began here...

66 F100 CC/65 F100 CC/66 F250 CC
If it starts to rain, they'll tax the splash.
If you want to fish, they'll tax the bass.
If you plant a yard, they'll tax the grass.
If you don't play nice, they'll fine your *$#!

66 F100 CC/65 F100 CC/66 F250 CC
If it starts to rain, they'll tax the splash.
If you want to fish, they'll tax the bass.
If you plant a yard, they'll tax the grass.
If you don't play nice, they'll fine your *$#!
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. 
