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Discussion Starter #1
Ok, so my OEM battery went dead this past Sunday in my 04 Coupe and I purchased a Exide Platinum Series 86-8.
It has 630 CCA @ 0 degrees, 785 CCA @ 32 degrees
and a 90 RC

So now I'm finding out that 90 RC isn't enough and I should have gone with AC-Delco 86-7YR. which has a 120 RC

Is that extra 30 minutes THAT critical ?

Maybe I should have watched C4C5Specialist' video on the subject :surprised

http://vettetube.com/view_video.php?viewkey=65c9da25f49408d959ca



 

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Black 08, A&A TI supercharger. Kooks headers. CCW wheels. Much more
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Paul is a world class tech.

I have always used Optima Red top 34 for my c5s. Gel filled, can mount upside down etc... costco has the in hawaii for $135.oo

800cca @ 0* 1000ca @ 32* 100RC
 

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Yes, you should have listened to Paul. You don't get a World Class GM certification by sending in box tops from cereal boxes! :laughing:
 

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Discussion Starter #4
Yes, you should have listened to Paul. You don't get a World Class GM certification by sending in box tops from cereal boxes! :laughing:
I hear ya JM, It's not that I doubted the guy, this all went down on a Sunday afternoon followed by a Holiday on Monday. The Distributor for the Delco batteries would not have been open until Tuesday !

So I posed this question over at Corvette Mechanic Forum and got a reply from one of Pauls comrads LLC5.
Here is what he has to say:

The critical part about reserve capacity is how long you let the vehicle sit between use, and the capacity to start the vehicle if any accy's are left on for a period of time after shutting the vehicle down. If you drive the vehicle regularly, and don't leave any accy's on after shut down, then you will probably be just fine. If the vehicle sits unused for weeks at a time, then the normal parasitic draw on the vehicle might be enough to discharge your new battery. Using a battery tender/maintainer will eliminate the problem also.
http://corvettemechanic.com/forum/4975-new-battery-did-i-screw-up.html#post28768
 

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The C5 is constantly drawing current for stuff like the alarm and other stuff that is constantly monitored by the computers. Getting the correct battery is such a simple fix for a lot of headache type problems.
 
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