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I have a original 289 but i want to swap for a bigger engine. i found a 351 cleavland for sale, can i put it in this car and what type of mods do i have to make.
 

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It will bolt right up without any major modifications. Your C4 or small block bellhousing will work fine. The 289 motor mounts will work, also. I had a 4 speed in my '67, but I found a place in Mass. that made headers for this swap. The Cleveland is probably 100lbs heavier than the 289, so the nose will sit a little lower. You can reduce the engine's weight by installing an aluminum intake and headers. A larger radiator will be needed. One for a big block '67-'70 Mustang will work. You can also get a good aftermarket aluminun one. You may have to relocate the ps pump and a/c compressor if you have them.
 

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I put a 351 c in a 67 fastback, use the standard small block motor mounts, use a 1970 mustang radiator and make your own mounts. I went with a 4 speed, and all the linkage is a an easy swap. auto swap is easy too. 351's make great power. canted valves kick ***. I went 11.2 compression ratio, 292 hyd. cam, 13 lb alum flywheel, and am running about 500 horse. U cant go wrong, just get a good block and dont bore more than .030.
 

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lets assume that your 1967 mustang is in good to excelent condition. Origional mustangs sell for between 30 to 50 thousand dollars. yank the 289 and drop in a cleveland and you will have a very fast mustang worth about 5000 dollars. good luck, and please destroy your origional mustang so mine might be worth 75000 dollars thank you.
 

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a lighter 351w would be better and bolt right in. The 351c was offered in 69, so it can be done with the right motor mounts and trans..
 
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