AL427SBF AL alot depends on the size of the carb, camshaft profile, oiling system, type of lifters, and pressure at idle when hot.
Here's my 2 cents
Solid roller motor with or without pressure rollers and under .700" lift, 1000 rpms. This is also with a hvhp
oil pump making about 30-40 psi at idle
If pressure numbers are lower than another 100-200 rpms. I don't like revving a motor, just increase until you have good psi numbers. This also depends on if the motor is center oiler through the lifter bores or a solid block or a side
oil block with the crank and rods getting
oil first.
The other big thing is valve lash setup. Don't matter how much oil is spraying on the camshaft and rollers for the lifters, TOO much lash is going to hammer or pound out the camshaft or the rollers in the lifters. Will not matter if they are caged bearing, or solid bar. I feel a solid bar lifter will last longer either way.
I do believe that idling is the worst thing for any solid lifter motor even with oiling modes to help oil drip on to the camshaft from the lifter bores. The real ticket would be to install sprayers to shoot on the camshaft and lifter location. This is like the diesels. Good luck. Rick L.