340 Vs 360

crackedback said
More likely to rip the threads out of the aluminum than kill the bolts themselves. Tensile stength of ONE 5/16 grade 5 fastener is more than sufficient to lift most engines and there are 4 of them. The bolts are in stretch, a rocker stud has forces applied differently.

Pro tip... NEVER use bolts to attach the lift plate on an aluminum intake. :)

Agree 100%

My point wasn't to suggest that an engine lift plate does the same/comparable job as a rocker stud.

Just to point out to Rat Bastid that 4 small fasteners in unison are often more effective than 1 larger fastener working on it's own.

Which is why five 3/8" bolts holding down a rocker shaft sustem would be more rigid against valve spring pressures than eight separate 7/16" rocker studs.

It's much easier to deflect/bend the single stud.

I could go all caveman and ****-up a 7/16" stud with a mash hammer pretty easily, or break it's mounting boss clean off.
but trying to a break/relocate/flex a fully torqued down rocker shaft, that would take some doing.