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-   -   Battery recommendations? (http://squarebirds.org/vbulletin/showthread.php?t=20185)

JohnG 03-04-2016 04:06 PM

Battery recommendations?
hi guys!

I need a battery for my '58.

I am looking for alot of cranking power and long life. I keep it on a Battery Tender in the winter.

Appearance not important - does not need to be a repro of what came from the factory.

Tried the local Ford dealership for the heck of it and came up totally empty handed.

Any recommendations?


partsetal 03-04-2016 05:43 PM

The optional battery is the Group 27F. I've seen them at my Ford Dealer as a 'Motorcraft Commercial'. Priced around 119. it is a good battery. The 27F does not have a lot of applications any more so try a supply house that moves a lot of batteries.

jopizz 03-04-2016 06:26 PM

If you don't care about originality Interstate still makes a 29NF which was the standard size as well as a 27F which was optional. Interstate makes very good batteries in my opinion.


JohnG 03-04-2016 06:48 PM

I measured the recess in the bottom of my (steel) battery tray. I get that it will accept a 12x7 battery.

I did find some places with 27F batteries including Interstate
and Sears. But the dimensions show 8" wide in one case and 12.6" long in another (Sears).

So apparently not just any 27F battery will fit ??

Am I missing some kind of insert that long ago got lost?

I am a little concerned about the height over toward the radiator where the hood is the lowest. I can see about 8 1/2" of clearance but the 9" mentioned by the Sears 27F leaves me a little skeptical (I could end up feeling really dumb if I manage to buy a battery that "almost" fits ) Or Sears includes the posts in the height. Who knows?

So back to the first response. A Motorcraft 27F should correctly fit the TBird?

jopizz 03-04-2016 06:52 PM

I've used many different brands of 27F batteries in squarebirds and have never had a problem with them hitting anything. The size is supposed to be the same from manufacturer to manufacturer.


jopizz 03-04-2016 07:03 PM

1 Attachment(s)
Do you have a hold down bracket? There were two different size brackets depending on whether you had a Group 29 or Group 27 battery. Here's a picture of my Group 29 battery and hold down bracket.


DKheld 03-04-2016 07:35 PM

Looks like my Motorcraft battery is about 6 years old now.

Still going strong!!

Group 29. Part # CLA C29NF $91.96


(although I have the original battery strap I don't have it installed at the moment - just a rubber strap - :o )


(edit - heh - just realized looking at the pics - the battery has outlasted the engine, radiator and valve covers)

JohnG 03-04-2016 09:26 PM

Much helpful information! Thanks a ton!

John, I don't have any tie downs, sorry to say. I was going to buy some hardware once I got the battery purchased.

Tbird1044 03-04-2016 11:25 PM

I went to Costco and got the biggest battery I could find that would fit. I went after CCA and capacity. Costco also had a good warranty and they are good about standing behind it. If interested I can check to see what size it is. I am having to make my own battery hold down as the 27F or 29F won't fit. I think the overall battery dimensions are 7 1/2 X 11.

JohnG 03-05-2016 12:37 AM

Nyles, if you can get measurements without much trouble, that would be of interest.

I can put a 12x7, max, battery in mine. I almost wonder if all the battery holders in these cars really are identical.

I agree with you on getting CCA and long life . . . the rest is details.


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