Battery Size
Thread Starter
Drifting
Joined: Dec 2003
Posts: 1,493
Likes: 94
From: Westfield MA
Battery Size
I just purchased a 2013 that has the original battery which I am looking to replace. The one in the car that the original owner says came with the car is a Group 85. When I look for replacements, some say Group 85 and some say Group 90. I have done a search of previous posts and have found people asserting both were original equipment. Is there a difference between them or would either one work? I am planning on stickling with a AC Delco battery mostly because it would look appropriate.
Drifting
Joined: Apr 2016
Posts: 1,286
Likes: 611
From: DFW Texas
Do an internet search on "Auto Battery Group Size Chart". See the attachment for the following battery group sizes recommended to fit a Corvette.
I put a Duracell AGM group size 35/85 in my GS. The taller battery offers a higher CCA rating than stock, but the extra height may interfere with changing the cabin air filter, so you might have to shift the battery to replace.
Hope this helps.
GD
I put a Duracell AGM group size 35/85 in my GS. The taller battery offers a higher CCA rating than stock, but the extra height may interfere with changing the cabin air filter, so you might have to shift the battery to replace.
Hope this helps.
GD
Last edited by gdmoore01; Mar 22, 2021 at 11:36 AM.
Race Director
Joined: Mar 2011
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From: SW Florida
2021 C6 of the Year Finalist - Modified
If you have a C6 with the wet sump engine (battery in the engine compartment), it's group 85.
Maybe the dry sump C6 cars that have the battery in the rear use a different group number ?
Maybe the dry sump C6 cars that have the battery in the rear use a different group number ?
Thread Starter
Drifting
Joined: Dec 2003
Posts: 1,493
Likes: 94
From: Westfield MA
Thanks for the info, I was able to locate an AC Delco PG85 that looks like the one that was in there. I don't know if they are better or worse than any other brand, but it looks like it belongs there.
