It isn't likely that you'll see anything over 5K on the tach unless this is a professionally built full blown racing engine with a short life expectancy. Some race engines will actually hit 7K but they aren't found in street machines.

1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain