I can comment about my friends old 162 CI B&M blower (SBC 400), that thing would make the intake manifold smoking hot & also the Blowers case would be smoking hot & just cruising around boost would only get up to 6-8 psi tops. You could not touch the blower case w/out burning yourself.
He blew up his engine (it was fast while it lasted), let another friend borrow the blower, quickly blew that SBC 350, you just can't run 87 octane & go for W.O.T. blast & expect a engine to take it w/out a proper tune w/a blower, or a turbo for that matter.
I think w/the newer blowers that have a bypass valve, that should keep the blower cooler when just cruising around.
MBHD
