i had bought a 1967 mustang v8 but the pb is how can i know the size of my engine????

 

if it's original, it's a 289. 302 didnt come out until 68
67 information

(that is, if it's a small block, of course. otherwise, it's a 390)

 

good info mayh, yeah take a look at the vin on the apron on the driver side, itll say 7f or t 01 c (a) (k) (s) 235356 so you need to look at the 4th letter in the vin and let us know, while your at it check the door tag to see if it matches up