RPM's

[Hank70SS]

Originally Posted by 70SS454

... Was wondering if it is hard on that big block to run for periods of time at that higher constant rpm..

That's how they were run back when they were built. We'd get on I-75 and do 80 mph for hours going up north. Yes 2,800 is a little more wear than 1,800 but it isn't going to hurt it. Gas mileage is the worst part of it.