That's good cranking voltage for the battery you're using. If you have access to a high-load battery tester, pull a 300 amp load (1/2 the CCA) for 15 seconds, and check the voltage while the load is still on. You should get 4.5 volts or more. The battery should be able to do at least 3 load tests in a row 5 minutes apart without seriously dropping the test voltage.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!