Belair,
When I drove mine on the street in the 80's - (with the factory tach) mine pulled hard to 7200-would continue to rev to 7800, but the usable power really dropped off at about 7200. The best part about the LT-1 is the consistant power band. Take it out and rev it up. If it has a "sweet spot" I would say it is about 6000 RPM because of the sound the engine makes. You will Like it.
If you have lots of rear ratio you will like it more!
Phil