Reply to "Closed Chamber Heads"

panteradougMember

That is the Crane rocker arm stud kit.

http://www.summitracing.com/pa...Sg6n9EFdoRoCO0Hw_wcB

They show 7/16" on the outside but are 5/16" mounted to the head where the bolt on rocker arm normally goes to.

This saves you from the effort and cost of machining the pedestals to the Boss302/351 style.

Personally I would not trust that size bolt, i.e., 5/16", on a high performance application. They will snap pretty easily if you raise the spring pressure to 350 to 380 which is what you normally would use with a high performance, non-stock camshaft and valve train.

Don't pay extra for that conversion that is shown. They are not reliable.

6/28/153:48 AM

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