Correct battery reference

[r15303]

Just want to make sure that the 71 340 Cuda came with a group 24 battery with the yellow caps before I buy one.  I also read that the larger group 27 battery with red caps was available as an option.  Is that correct??

[trouble]

 
Mopar Battery Application Guide 1966-1974
The application guide below is a listing of battery types used with most Chrysler Corporation drivetrains from 1966 - 1974.
   
Group 24 Mopar Battery with yellow caps
 
 Group 24 Mopar Battery with green caps
 
 Group 27 Mopar Battery with red caps
 
 
     
Group 24 Mopar Batteries - 10-5/8"L x 6-3/4"W x 8-7/8"H
 
Year Engine CID Cap Color Group Size Amps
1970 - 1973 198 Green 24 48A
1966 - 1974 225 Green 24 48A
1966 - 1969 273 Green 24 48A
1966 - 1974 318 Green 24 48A
1968 - 1969 340 Green 24 48A
1970 - 1973 340 Yellow 24 59A
1971 - 1974 360 Yellow 24 59A
1966 361 Yellow 24 59A
1967 - 1973 383 Yellow 24 59A
1972 - 1973 400 Yellow 24 59A
1970 - 1971 Optional Yellow 24 59A
Group 27 Mopar Batteries - 12-1/2"L x 6-13/16"W x 8-15/16"H
Year Engine CID Cap Color Group Size Amps
1966 383 Red 27 70A
1974 400 Red 27 70A
1966 - 1971 426 Hemi Red 27 70A
1966 - 1974 440 Red 27 70A
1966 - 1972 Optional Red 27 70A

 
 
 
 

[r15303]

Thanks Trouble!!

[slsc98]

Just curious: Should I shop for and locate a replacement battery according to the size engine in the car or, the year of the car itslef?

In other words, if a '73 Challenger (which was not factory-offered with a 440) now has a non-original 440 (bigger) engine in it, do I buy the Group 24 battery or, the Group 27?

I ask as, eventually (hopefully, sooner than later) I am going to start tackling the relatively (very) minor electrical issues my car has. Crazy as it sounds, #1 priority is getting the cig lighter to work as my job requires me to be on call, pretty much 24/7 and I HAVE to find a way to keep my cell phone charged, while I'm cruising. Fuses are all okay so, I am kind of puzzled as to why the cig lighter is testing neg for any electricity. Then again, previous owner installed an am/fm cassette deck so, . . . ?

Later, we want to have Vintage Air installed and I am not sure if I will need to take anything related to the battery into consideration when we do.

Occassionally, I think about a nice sound system but, I simply cannot think of any sound better to my ears than the engine and exhaust so, shelving any stereo - install ideas for the very foreseeable future . . .

Thanks in advance!

[resq302]

Personally, since it is not an optional engine for that year, you could do anything you'd want.  If it were my car, I would try to get a Mopar battery the biggest I possibly could fit in there just to give you extra cranking amps starting should you have any electrical issues.

[Topcat]

If you start it up/drive in above average cold climates like Minnnesota for example, you need more cold cranking amps. If you are closer to a place like Arizona, you need less Cold Cranking amps since it's hotter there.

Being that's the case, understand that more cranking amps/cold cranking amps means more plates per cell closer to each other inside the battery. That equates to less fluid in the battery. Which means the battery holds in more heat and less cooling/heat transfer inside. Long term extreme heat kills a wet cell battery.

Interstate sells a MTP-27. As well as a MT-24 and a MTP-24.

The MT series will be suitable for most applications where it's hotter throughout the year.
The MTP series is best when used in extreme cold or higher compression engines.

[slsc98]

resq302, Topcat, thank you both, very much -- this is helpful and info I needed!

[slsc98]

Quick update: the size 24 battery that was in the car finally went tits up so I picked up a size 27 and it fit in the tray just fine (tray is 7" wide x 12-1/4" long)

[Topcat]

I plan on running a Northstar group 27 AGM.

It has a 5 year warranty free replacement. It can sit longer without needing a re charge.
Uses 99.9% virgin lead. Made in North America. It handles temp extremes and discharges and recovers better than another AGM battery.

[AARuFAST]

Yellow caps are standand for the 340. BUT, if the car has a lot of options power windows, a power convertible top, etc,
I would go for the larger group 27 battery.
My 70 383 G Coupe convertible has a lot of options and I will go with the 27 red cap battery over the gp 24 yellow cap battery.

[slsc98]

I plan on running a Northstar group 27 AGM. It has a 5 year warranty free replacement. It can sit longer without needing a re charge.

Wow, that is a tough to match warranty!  The size-27 I got from the local BJ's was just under $100 but, only carries a 4 year free replacement.

[Topcat]

I plan on running a Northstar group 27 AGM. It has a 5 year warranty free replacement. It can sit longer without needing a re charge.

Wow, that is a tough to match warranty!  The size-27 I got from the local BJ's was just under $100 but, only carries a 4 year free replacement.

Be aware it is a heavier battery since it doesn't have Calcium alloy'd into the plates like a standard battery.
I wouldn't even entertain the idea of an Optima anymore after seeing the specs of the Northstar X2.

The 27 group really isn't really needed since the 24 group has great specs.
I recommend the 24.   

http://www.northstarsitetel.com/1.0.1.0/254/NSB_AGM_24_(SES-542-83).pdf