10-24-2011, 03:34 pm
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| Corvette Enthusiast Join Date: Sep 2010 Location: Eastern Long Island NY Posts: 15
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|  Dead battery
This AM my battery was dead in my 2003. I searched the site and found that I should have an AC Delco Professional 78 6yr. Called the local dealer and they said I should have a 75 6yr. Car currently has a diehard which was in it when I purchased the car a 1 1/2 years ago. Don't want the column lock problem. Is the 75 6yr ok? CCA is 650.
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10-24-2011, 04:28 pm
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| Master Technician  Join Date: Nov 2006 Location: Washington State Posts: 1,145
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| Quote:
Any quality battery with a reserve capacity (RC) of 120, and a minimum CCA of at least 500, will do fine in a C5. | |||||||||||||||||||||
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Master Technician 20 year ASE Master Certified Tech 1998 black 6spd convertible | ||||||||||||||||||||||
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| The Following User Says Thank You to LLC5 For This Useful Post: | Jay Guthrie (10-26-2011) |
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10-26-2011, 08:25 am
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| Corvette Enthusiast Join Date: Sep 2010 Location: Eastern Long Island NY Posts: 15
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The issue I am having is that the AC Delco 75 series 6 yr has 95 RC not the recommended 120. The 78 series is available with the 120 RC but it is larger in size than the 75 and the dealer indicated it would not fit. Does anyone know if the 78 fits in a 2003? Thanks for all the help!
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10-26-2011, 09:38 am
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| Master Technician Join Date: Nov 2006 Location: Washington State Posts: 1,145
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| Quote:
My '98 has a 78 series battery in it and I would find it hard to believe that the battery tray was changed in '03 but I guess that it could be possible. I would ask the dealer if the battery trays were changed in '03, possibly call the parts department and see if there is a different part number for a '98 C5 and an '03 C5 battery tray and holder. AC Delco makes a 7 year 75 series battery (75-7YR), maybe it has a higher RC rating also. I would want a battery with the closest RC rating to 120 that I could find. | |||||||||||||||||||||
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Master Technician 20 year ASE Master Certified Tech 1998 black 6spd convertible | ||||||||||||||||||||||
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| The Following User Says Thank You to LLC5 For This Useful Post: | Jay Guthrie (10-27-2011) |
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10-26-2011, 01:04 pm
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| Corvette Enthusiast Join Date: Jul 2009 Location: Carlsbad, Ca. Posts: 418
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I'd get a tape measure and check the Diehard (L W H). Then, try to find one that size. (Actually, I'd go to CostCo and buy a Kirkland for $65 and get the biggest, meanest battery that will fit.) One of my 2 mottos: 1. There's no such thing as "too much" battery (providing it has 6 cells.) The other one has to do with headlights... | ||||||||||||||||||||
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| The Following User Says Thank You to NORTY For This Useful Post: | Jay Guthrie (10-27-2011) |
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10-26-2011, 06:30 pm
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| Old Time Car Guy  Join Date: May 2007 Location: Clever, Missoura......formerly San Diego Posts: 126
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I believe the battery size was the same for 97-2003, then changed in 2004.....but double check yourself like Norty said!
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| The Following User Says Thank You to Fixvet For This Useful Post: | Jay Guthrie (10-27-2011) |
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10-27-2011, 07:14 am
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| Corvette Enthusiast Join Date: Sep 2010 Location: Eastern Long Island NY Posts: 15
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I will get the tape measure out this weekend and determine exactly what will fit. Thanks for the help. I will let you know the results!
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10-27-2011, 06:34 pm
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| Corvette Enthusiast Join Date: Aug 2009 Location: Juneau, Alaska Posts: 39
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I bought my '99 new in March'99 and it's battery didn't last a year. The present battery I have had in the car since '05.
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| Last edited by CHECKURSIX; 10-28-2011 at 07:16 pm.. | |||||||||||||||||||||
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10-28-2011, 02:13 pm
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| Corvette Enthusiast Join Date: Aug 2007 Posts: 1
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My 2003 has the 78-6YR in it and it fits fine.
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| The Following User Says Thank You to ladamas For This Useful Post: | Jay Guthrie (10-28-2011) |
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10-31-2011, 04:32 pm
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| Corvette Enthusiast Join Date: Sep 2010 Location: Eastern Long Island NY Posts: 15
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Ok the results are in. I measured and the 78 series fits perfectly. I purchased one this weekend and installed it. It is working good so far. Thanks for all the help!
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