I'm with Garret/post 21
A compression test is gonna give you a darn good idea of how it's gonna run below 3500ish, irrespective of the actual cam specs, which relate more to power over the nose..
And, you can get a feel for the cam by the amount of over lap it has.
And You don't have to be very accurate in measuring it, you can measure this off the balancer, by distance between the points, then converting that to degrees by using the balancer's circumference. But if the lifters bleed down during the test, then the test is bogus. So if the result is repeatable, yur golden, otherwise it's likely a waste of time.
The following are rated at a measured .008 tappet rise.
The factory 318 cam has 20*
The factory 360 cam has 30*
the factory 340 cam has 44*
A modest aftermarket might have 50*
A weekend warrior around 60*
a street/strip maybe 70*
I'm also with Rusty, so long as the lifters don't bleed down.