I feel that people have been mis interpereted and or mis informed about what motors are what so heres a thread for what's what

The following are small blocks:

260
289
302
351 Windsor
351 Cleveland
351 Modified
400 Modified

The following are Big Blocks:
360
390
427
428
429
460


Inline six's:
144
170
200
232
240
250
300

if ive missed any please feel free to add or correct!

 

Are you addressing Mustangs only or all Ford motors? Are you limiting the time frame between 64 and 73?

 

just pushrod v8's and inline six's no modular motors, or v-6's.. thered be too many....

 

within the same years, Ford also built a small block 400 and a big block 360, although these were not mustang choices.

 

More I6s( these weren't in mustangs, but they are ford I6s.)

144
232
240

 

whats that 400 sb from??

 

was the 351M and 400M small or big blocks?

 

I guess small block for the 351M. Just read that no one really knows what the M stands for so they just consider it a letter not meaning anything.

 

i beleive it means modified?

 

Yes, it's generally accepted as 'modified,' however some people refer to it as 'midland' for some reason I'm unaware of.