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Old 06-18-2009, 10:51 AM   #1
cljimmy72
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Original Delco battery information

I need to know what Delco battery originally came with my truck. It is a 1972 K2500 4x4 custom camper GMC with a 350 4 barrel. I have been running an R89S-Is this correct? My battery died and I need to order a new one ASAP for GM Nationals next weekend at Carlisle. I see the R89W has more CCA. Was this for the big blocks?
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Old 06-18-2009, 11:07 AM   #2
70cst
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Re: Original Delco battery information

Voltage=12.1
Capacity Amps=53

The above was for K/5 Blazer, C10, C20, K10, K20

Size=L 9.44/W=6.75/H=8.41

Top Terminal

The above came from the 1970 Chevrolet Truck Data Book
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Old 06-18-2009, 12:28 PM   #3
cljimmy72
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Re: Original Delco battery information

My original wiring harness is side terminal for the battery-not top. This is straight from the factory this way.
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Old 06-18-2009, 12:34 PM   #4
70cst
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Re: Original Delco battery information

Quote:
Originally Posted by cljimmy72 View Post
My original wiring harness is side terminal for the battery-not top. This is straight from the factory this way.
Good point...I was referencing from the 1970 parts manual as that is the year truck that I have.
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A husband can be right...or...A husband can be happy.

67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk.

1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc

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Old 06-18-2009, 04:05 PM   #5
71 super
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Re: Original Delco battery information

71 was first year of side terminals i trucks. I have the R89w in my bb truck and considering most don't know the difference go with the larger cold cranking amp battery. FYI I use a optima to move crack etc, after a bad experience with a faulty new voltage regulator and a acid spill from the originalstyle battery- luckily nothing was hurt so I drained the battery and place it in the truck to show only- since battery cables must be disconnected anyway.
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