66 mustang engine - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

fordmjh · 03-13-2005, 22:45

well i have a 1966 mustang with a 302 but i was given a 351 m . i was think of puting the 351 m in my mustang will it fit ??? because i dont want to rebuild the 351 if its not going to fit. is the 302 better then the 351m ? does the Cleveland heads fit the 351 m ?

Bassman · 03-13-2005, 23:12

I was in a wedding on the weekend and we arrived in a 66 Mustang with a worked 351 Windsor, dont know about the Clevo though but the Windsor went well.

lukeh · 03-15-2005, 03:10

I think he means a 351 M...Which stands for 'Modified'.They are related to the 400 Cleveland I believe...and in my opininion it will not be suitable to your Mustang as it will be alot of trouble and take alot of modifications to make it fit and work.then for your trouble you will lose handling as a 351M is much heavier than a 302 Windsor.Also...the 351M was not Designed or built as a Performance Engine and you are also limited with Aftermarket Performance Equiptment with a 351M.Good Advice is IMO...Sell the 351M and spend the money on your Windsor!!!