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Can someone tell me what rocker arm assemblies I'm looking at
I'll be on rockauto looking at pictures but someone can probably recognize what year these assemblies are, it's in a 1982 f250 but that engine expired 7 years ago, this is a head from a junkyard engine I then installed, and it appears not to be from the year it was pulled from. They both have mounting rails, but one is stud and the other is bolt. The kit in the plastic bag is a kit that came with enginequest eq-ch300aa 1987-96.
Last edited by Scott98065; May 6, 2026 at 02:01 AM.
That looks like an aftermarket kit that was sold by Crane and other companies to allow stud mount rocker arms to bolt onto a pedestal mount rocker arm cylinder head. Those little plastic things snap into the guide plates so that stock non hardened pushrods will still work. They made these for the Cleveland and 385 series engines too.
Another name for the rockers you have are "sled rockers". As was mentioned they are also called "pedestal rockers". They came out around 1977 on Ford engines. The rockers before those were called "rail rockers". Those were used from 1966 thru to 1977.
The pedestal rockers used bolts as you found out. The rail rockers used pressed in studs. Ford never used screw in studs unless it was a high performance version of the engine.
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