Ill give you the answer. You’d know this if you had any experience in anything other than arguing.
Five 3/8 bolts will NOT hold the shafts down under load unless you run hydraulic cams or really small SFT stuff.
The five 5/16 bolts on passenger car heads will barely take a .600 net lift SFT. You can see the witness marks saddles.
I‘d post a video of what happens on a BBC chevy when the bolts can’t hold the rockers but it won’t help you understand ****.
I know exactly how a valve spring works and you inferring that picking up an engine with four 5/16 bolts is as much stress and strain on the fasteners a rocker shaft bolts shows your limited experience and foolish ignorance.
Back on ignore.
