OEM battery for 1985 GMC bus

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OEM battery for 1985 GMC bus

Home > Discussion Forum > Bus Conversions - School

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All Messages in Thread	Author	Date
OEM battery for 1985 GMC bus	BUSted	11-30-00
I am looking for a replacement battery for a 1985 GMC 6000 chassis/Ward School Bus. The battery that was in it was a Delco heavy-duty freedom battery model # 1110, size 31. It had 750 CCA. Do I need to replace it with an identical battery or can I use a smaller battery with a lower CCA? I’m not sure if this battery was specified specifically for the wheelchair lift that it had in it. The lift is no longer in it and I haven’t added much in the way of 12 volt accessories. I guess what my question is what is what size battery did GM specify to start the 366 CID 6.0 L big block V8 gasoline engine without the lift. I am not using the battery for any other purpose, i.e. 12 volt accessories when the engine is off . Any info would help. Thanks
Re: OEM battery for 1985 GMC bus	dave reingardt	3-16-03
I am looking for someone to help me with some questions about my 1985 GMC 6000 WARD body school bus.Any response would be greatly appreciated. dave
Re: OEM battery for 1985 GMC bus	FAST FRED	12-1-00
The battery group sizes 24 ,27 , 31 ect are usually chosen to reflect the start requirements. A group 31 does seem large , but maybe they worried about LOTS of starts in a short distance. AS most cost almost the same using a batt that FITTS the battery holdowns is easiest. A 31 in a 31 well. SEARS has start batts that are as good as any , and can be replaced anywhere in the country. Get a goo one , dont abuse it and it should go 5 years. FAST FRED
Re: OEM battery for 1985 GMC bus	John the busboy	12-2-00
: Our bus is a 1984 GMC Series 6000. It is equipped with a wheelchair lift and has two 12 volt batteries in parallel. They are NAPA commercial batteries. What happened to the wheelchair lift John the busboy
Re: OEM battery for 1985 GMC bus	Mark O.	12-1-00
While I usually agree with FF, this time I disagree somewhat. Replace the battery that is in there with the same size. A smaller battery might work but the cost difference is so slight, over the life of the battery, you won't notice the difference. Personally I have had the best luck with Interstate batteries. Of the more than a dozen I have purchased I have only had to replace one. The best part of Interstate batteries is they are always fresh and Interstate has more dealers than Sears has. One never knows for sure how long Delco or Sears batteries may have been on the shelf before purchasing them. If batteries were stored dry until purchase it wouldn't make any difference. But I haven't seen a dry battery in a long time. As far as battery life is concerned, if you don't allow the battery to be drained down dead, a good start battery should last more than five years. Perhaps I am just easy on batteries but if I don't get 5 years I figure I got a bad battery. The lift really didn't require the start battery to be larger. Most school buses have so many 12-volt accessories that the electrical system is usually larger than found on equivalently sized trucks. And in my experience, most lifts are not used with the engine off. Get a good battery and don't go cheap. It would be a false economy. Happy trails. Mark O.