How to identify SB Ford heads without pulling them
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So what if you want to know what year of 289, 302 or 351W head you have or if you have 221, 260 or 255 heads. Use your visual clues to identify what head you have. First off, if you have a head with no casting displacment number on it, then it must be a 221, 260 or a post 77 255, 302, 351W head. So which one do you have? Look at the rocker arm. If you have a conventional rocker arm with a machined slot in the head for a push rod, you have a 221 or a 260 head. If the head has a bolt down sled fulcrum, with a large hole drilled for the pushrod, then it is a post 1977 255, 302, 351W head. | So what if you want to know what year of 289, 302 or 351W head you have or if you have 221, 260 or 255 heads. Use your visual clues to identify what head you have. First off, if you have a head with no casting displacment number on it, then it must be a 221, 260 or a post 77 255, 302, 351W head. So which one do you have? Look at the rocker arm. If you have a conventional rocker arm with a machined slot in the head for a push rod, you have a 221 or a 260 head. If the head has a bolt down sled fulcrum, with a large hole drilled for the pushrod, then it is a post 1977 255, 302, 351W head. | ||
| − | + | Next, Ford used two different rocker arms setups for the 289, 302, and 351W and one rocker arm design for the 255. The 289 used a conventional rocker and a rail type of rocker arm. The 302, 351w used a rail rocker arm and a bolt down sled fulcrum. The 255 used only the bolt down sled fulcrum type of rocker arm. The 289 used the conventional rocker arm up to mid 1966 and then switched to the rail rocker arm design. So if you pull a valve cover and it says 289 and has a conventional rocker arm it is a pre-1967 head. If it has 289 under the valve cover and it has rail rockers it is a 1967-68 289 head. | |
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