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Old 01-21-2020, 01:45 PM   #1
Alan O'Connell
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Default Cranking Capacity

What was the cranking capacity for an original 1936 Ford battery? I believe it was a group 2LF battery.
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Old 01-21-2020, 07:24 PM   #2
G.M.
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Default Re: Cranking Capacity

I don't know what you mean by cranking capacity?? You need a fully charged battery,
large diameter cable with good ends and connections and a clean tight ground with the engine grounded good. With a good battery and cables as described above you will get maximum cranking power. These engines can be easily started with a hand crank. That being said means the engine don't have to spin to start. One good shot with the starter should start the engine on the first or second revolution if not you have problems that need to be fixed. G.M.
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Old 01-21-2020, 07:31 PM   #3
deuce_roadster
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Default Re: Cranking Capacity

Alan is probably referring to the CCA (cold cranking amps) number which is a standard many use to compare batteries.
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Old 01-21-2020, 09:23 PM   #4
Alan O'Connell
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Default Re: Cranking Capacity

Yes, I'm referring to the CCA (Cold Cranking Amps). I'm looking at a battery from NAPA. The dimensions are 8-1/4" long, 6-3/4" wide and 7-1/2" high to the top of the terminals. It's a little smaller than the original but the cover will fit and it should be wide enough so that it won't fall through the bottom of the holder. My concern is the CCA is 540 at 32 degrees and 440 at zero which is way less than the Optima battery. But it might be ok if it is the same or more than the CCA of the original Ford battery.
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Old 01-21-2020, 11:27 PM   #5
Don Rogers
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Default Re: Cranking Capacity

The original 35/36 Ford battery was rated 90 Amp/Hours @ 20 hr. rate. This converts to approx 650 cold cranking amps.
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Old 01-22-2020, 06:04 PM   #6
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Default Re: Cranking Capacity

The only decent 6V battery out there seems to be the Optima. All the rest seem like they are stuck in the 50's. No other 'modern' designed 6V batteries that I know of... and none of those that I am aware of seem to work that well.

I have used regular 'old style' 6V batteries as well as the Optima... and can testify that the cars crank a LOT faster and longer with the Optima.

The new owner of the '34 took possession a couple days ago. It fired right up after sitting overnight in -4 degree Wisconsin weather! I'd say its fresh Optima battery had something to do with it.
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Old 01-22-2020, 06:16 PM   #7
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Default Re: Cranking Capacity

The battery in my 37 is as most know on the firewall and I wanted a conventional battery for looks.. Not a fan of the covers. I have had this one in my car for over a year now and it will start right up after sitting a month. Cold weather starts included. I am happy with it.

https://www.oreillyauto.com/detail/b...+battery&pos=1
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Old 01-22-2020, 07:51 PM   #8
GaryU.
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Default Re: Cranking Capacity

Brought this back up to post what I've found locally:

https://shop.advanceautoparts.com/p/...6+volt+battery
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Old 01-23-2020, 07:49 AM   #9
corvette8n
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Default Re: Cranking Capacity

Tractor supply also has them.
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Old 01-23-2020, 08:26 AM   #10
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Default Re: Cranking Capacity

I've given up on Tractor Supply Exide batteries. The only good thing that I can say about them is when they fail in less than 12 months (which is often), you can get a new one free. I have 6 old Fords and they all have Optima batteries. They have never needed maintenance chargers, even after sitting for 6 months or more. Also, they don't leak acid and can be mounted in any position.
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Old 01-23-2020, 09:27 AM   #11
G.M.
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Default Re: Cranking Capacity

Quote:
Originally Posted by 37 Cab View Post
The battery in my 37 is as most know on the firewall and I wanted a conventional battery for looks.. Not a fan of the covers. I have had this one in my car for over a year now and it will start right up after sitting a month. Cold weather starts included. I am happy with it.

https://www.oreillyauto.com/detail/b...+battery&pos=1
My 39 pickup has the same firewall mounted battery as your 37, here's what I did. G.M.
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File Type: jpg 39 P-U Optima 2.jpg (85.9 KB, 34 views)
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Old 01-23-2020, 10:15 AM   #12
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Default Re: Cranking Capacity

I have used an Optima in my 35 and by using a pre formed metal piece that just snaps in place the taller Optima Battery works fine. It fits just right so no extra bolts are required and can be removed easely and a regular battery can be installed in its place. Jmho kerk
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