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Battery size 330 GTC

Discussion in 'Vintage (thru 365 GTC4)' started by fasthound, Sep 27, 2021.

  1. fasthound

    fasthound Formula Junior
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    Nov 23, 2003
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    Potomac, Maryland
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    Kevin
    I used search with several different search phrases, but was unable to find an answer. Maybe I missed it, but I sure didn’t see it anywhere. So, here’s my question.

    What is the correct size battery for the 330 GTC? Not looking for “vintage correct”, simply looking to replace with a high quality new battery.

    Thanks in advance,
    Kevin
     
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  3. TTR

    TTR F1 Rookie
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    Timo
    Probably a group 24 or 27 and if latter, it could also be 27F (pos./neg. post locations reversed).
    Your battery tray length and width, along with available space for height and intended cable end locations would be good indicators.
     
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  4. DWR46

    DWR46 Formula 3
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    Jun 19, 2012
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    Timo is correct, it is a Group 24 or 27 (I can't recall since is has been over 40 years since we owned our car). The battery posts go to the rear, so that will determine if you need a 24F or a 27F. Measure the tray and then determine if you need a "F" or not.
     
  5. fasthound

    fasthound Formula Junior
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    Thanks guys!
     
  6. Cobraownr

    Cobraownr Formula Junior
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    Donald Silawsky
    See photo. Interstate battery for my 365 GTC supplied by Competizione. I'm guessing the battery tray is the same size as the one in the 330 GTC.

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  8. fasthound

    fasthound Formula Junior
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    And that's where the car will be in a few weeks. Thanks for the photo!
     
  9. DWR46

    DWR46 Formula 3
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    A 34R is the same height and width as a 24, but lower. We use lot of them instead of the Group 24 to make more room in the battery area. However a Group 34 battery was not around when these cars were built.
     
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  10. 330BRC

    330BRC Karting

    May 4, 2007
    101
    Seattle, Washington
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    Brian Conlan
    The last battery I put in my 330GTC was a 27F-85. Fits perfectly.
     
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  11. jimmyr

    jimmyr Karting

    Oct 10, 2004
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    Dyke, if the 34R is a lower 24, is there a lower 27 group too? In the Daytona the 27F height makes it a very tight fit against the hood latch. Jim
     
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  13. DWR46

    DWR46 Formula 3
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    Jim: I am not aware of a "low" height version of a Group 27. A Daytona uses a 27F, and there is a Group 48/91 battery that appears to be the same as a 27F, except it is 1.3 in lower. I do not have a photo of a Group 48/91, so it may have other different characteristics. I am pretty sure the Group 48/91 is not a common battery, so finding one may be difficult. Also, my battery charts give conflicting size info on this battery.
     
  14. TTR

    TTR F1 Rookie
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    Excuse me Dyke, but perhaps you meant “…. same length and width… “ ?

    Also worth keeping in mind that while various battery groups (other than 24/24F or 27/27F) may have same or similar dimensions, reasons for their group numbers may be due to different locations (on the side, etc) or types (screw or stud, etc) of cable attachments.
     
  15. DWR46

    DWR46 Formula 3
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    Timo: Thank you, I always need an editor. Yes, the various Group numbers, in addition to physical size, designate voltage, post position and style as well as other properties of the batteries.
     
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  16. JimEakin

    JimEakin Formula Junior
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  17. fasthound

    fasthound Formula Junior
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    My tray is sized for a Group 27, but the cables are set up for battery terminals at the front of the battery with negative closet to engine. I know that’s not standard, but I’m not going to change out the battery cables since I am not showing the car anywhere for points. So I can fit Group 27, 34 or 48 with this tray. My current battery is group 27. Labeling is gone, but I’m guessing it’s a Duralast brand. Made in Mexico. I may go with a group 34 (not the “R” due to my preferred terminal placement) just to get more elbow room in the engine bay. Also going to put a heat shield in the bottom of the tray.

    PS - fuse cover is off to replace a blown fuse.

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  18. DWR46

    DWR46 Formula 3
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    The trays originally had a bottom plate with asbestos on the underside (heat shield).
     
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  19. Jack-the-lad

    Jack-the-lad Five Time F1 World Champ
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    Jun 22, 2004
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    With your indulgence .....if I could possibly temporarily go slightly off topic rather than starting a new thread....A few years ago I bought an unbranded battery for my 330GTC and then sourced a Marelli sticker from Parker. Now I can’t remember where or how I got the battery.:rolleyes: Can anybody give me some guidance on getting a good battery without branding all over it?

    Thanks,

    Jack.
     
  20. fasthound

    fasthound Formula Junior
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    Yes….I’ve ordered the heat shield from Tom at https://www.classicperformancerestoration.com/ He is going to cut one to size to fit my existing tray. I’ve purchased from him before and have been pleased with the products he offers up. I bought a window crank and visor end caps from him…nice quality products.

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  21. JohnnyRay

    JohnnyRay Formula 3
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    Why, just go to your file where you keep every every single receipt for the car! There, you will find the receipt for the battery you purchased. :)

    In all seriousness, Eastern Penn makes batteries for many brands - including NAPA. The (AGM ) battery I recently bought for my 550 was minimally labeled with vinyl decals that could easily be removed. Similarly, Johnson Controls makes batteries for many brands. You can pick one of theirs up at WalMart and those may have easily removable labels as well. I bought one of their AGMs for the DB9. Fits and works just as it should - as good a battery as you can buy anywhere! Interestingly enough, Johnson also makes many (or all) of the Interstate batteries!
     
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  22. Jack-the-lad

    Jack-the-lad Five Time F1 World Champ
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    Thanks!
     
  23. fasthound

    fasthound Formula Junior
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  24. TTR

    TTR F1 Rookie
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    Another small addition to my earlier comments.
    Having recently needed to replace couple of Group 27F batteries (on Daytonas), I noticed their physical size (specifically width) had become slightly (1/8"-1/4" ?) smaller than identical brand/model units they replaced, making the fit of the OEM hold-down bracket little less than ideal, requiring it to be carefully centered and some "filler" material added to prevent the bracket to slip off to one side or the other.
     
  25. dRoger45

    dRoger45 Rookie

    Aug 17, 2017
    19
    My uncle go this new 330GTC project and it may need a new battery. Got to finish installing the bumper and amp research board on the truck before we can clear the garage and take her in.
     

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