Optima Batteries. Accept no substitute. Also, make sure your cables are 2-ought cables (NOT #2!), and have clean bright connections on both ends of both cables, and that your ground from the starter to the block is also clean bright bare metal (starter mounting bolts). Dick Benjamin (with a barnfull of 6 volt cars, some much harder to crank than your 331). ----- Original Message ----- From: <DONALDDICKINSOND@xxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Sunday, April 18, 2004 6:26 PM Subject: IML: 6 volt battery that will crank > Has anyone found a good 6 volt battery that has lots of cranking power for my > 1955 hemi Imperial? Maybe that's an oxymoron! >