Rocker arms for 408 build

mbaird said

I think the 5/16 is fine for our builds.
Solid roller , high rpms and big spring pressures would be a different story.

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As an example: I’m using the Comp 5/16” (4542-16) studs with 1.6 rocker arms on a mild hyd cam .323” lobe lift (.517” valve lift) with Hughes 1110 springs (120#closed, 310#open) Spin it to 6000 often no issues. I could have run the stock stamped setup in my case. The op’s initial post he mentioned .525” lift and 5800 rpm as a target. No need for girdles or enlarging mounting holes or extravagance in these mild cases.