1971 C20 Battery Cable Part Numbers?

[tidmack]

Hi Fellas,

I haven't had a chance to purchase an assembly manual for a recently purchased '71 C20 Custom Deluxe. Can someone please provide the correct part numbers for the positive and negative battery cables? The truck is a C20 Custom Deluxe, 350 4 Bbl, no A/C. My understanding is the correct lengths are 45" and 25", but the factory part numbers would be incredibly helpful.

A huge thank you for any help that can be provided.

Jeff

[SS Tim]

The assembly manual does NOT have part numbers. If you read/speak parts there is an online GM parts wiki.
http://www.gmpartswiki.com/query

Maybe later I can try and look them up for you.

Now are you wanting to track down NOS service parts or actual production/reproductions? Or are you simply trying to get the exact length so it looks right with say NAPA sourced cables?

[tidmack]

Tim, thanks for the reply. I'm looking to have correct side terminal reproductions made by M&H. The truck is such a survivor in other aspects that the current top post aftermarket cables look out of place. I'll take a look at the wiki later when I get home, but if anyone who has been down this road knows the part numbers, that would be terrific. Thanks again, guys. Jeff
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[SS Tim]

Per the 5-79 parts book the number are as below.
However I cannot stress enough that these are service replacement part numbers and lengths. The production cables may have been shorter or otherwise different. The build sheet codes indicate unknown differences. The codes I have are for a C10.

neg. 8907026 25" (code TLE?)

pos. 8907030 45" (code TAD?)

Anyone who has a 71 build sheet with a 350/auto in it please check boxes 64 and 65 for us.

[tidmack]

Wow, thank you, Tim. I just got home and took a look at the Wiki when the alert popped up with your reply. I kept my wiki search very general to 1971 Chevy and I wasn't getting anything. How did you do your search to get the parts to show up? I'll keep playing around for a bit and see if I can figure it out, as it'd be an incredibly valuable tool. Thank you again and hopefully someone with a build sheet can verify. Have a great night.

Jeff

[tidmack]

Ok, just figured out the parts Wiki. Seriously, your link should be a sticky if it's not already. That is one HECK of a database of information at the tips of our fingers! Thank you again for sharing.

Jeff

[SS Tim]

Well GM parts manuals are kind of like learning a language. The more you use it the better and faster your results. You might just try flipping through group 2.000 tonight or try a search based on "cable". Most of the time I use my manuals and keep the wiki for a reverse number search/cross reference. From what I understand the 79 manual was the final but also the most condensed for us. Still trying to afford a paper late 72 and maybe a 70 to add to my collection.
If you want to learn you might have a little better luck with a copy vs a data base. So enjoy your download.

http://www.2heeldrive.com/Chevrolet/...%20CATALOG.pdf

Finally just received build codes 4665 (64n) and 4662 (65p) from a late 71 C20 350/auto. These are very likely the last four of the build part number.

[MLB57]

I got my side terminal cables at rockauto they were 45 and 25 inches long Delco 72 with 350

[tidmack]

Tim, the parts catalog will really come in handy! Thank you again for the link. I took a look at the 2.000 section and found the cable area that you posted the photo of. With the build codes you received from the build sheet, does it seem right that the cable part numbers would still retain the 890 prefix with the 4665 and 4662 suffix? Or, do you think the original part number was entirely different?

Jeff

Originally Posted by SS Tim

Finally just received build codes 4665 (64n) and 4662 (65p) from a late 71 C20 350/auto. These are very likely the last four of the build part number.

[SS Tim]

Try that part number through the parts wiki and see if you get a hit anywhere. But then as I tell people these are service part numbers and not always/often production part numbers.

What I really need is a 71-72 issue parts manual to start at.
Also here is 71 C20 350/auto with the box 64 4665 number visible.

[tidmack]

Thanks again for the explanation. I ran 8904665 and 4662 and didn't get any hits. I also tried 4665 and 4665* to see if I could search partial numbers, but nothing substantial came up.

I guess I've always used build sheets to check RPO's and never thought much about corresponding part numbers that appear in the boxes. That's interesting. I'll dig around during my lunch tomorrow and see if I come up with anything else.

Jeff

[DeadheadNM]

Should know this but don't - were the OEM cables top or side mount? My 72 K20 is nearly done and will need a set soon. I'm wondering what battery and cable type to buy....

[SS Tim]

The stock cables were side terminal in 71-72 but I thought for some reason the HD battery was top terminal or was that my 69 Camaro. I'll try and look into that tonight. DeadheadNM the 45" and 25" are the service replacement lengths for your application. If you want to go to tops you might want to verify the installed lengths.

[SS Tim]

Well spent a bunch of time tonight trying to run a history down. The cable number 8907030 fits a LOT of service application and is actually a supercession of 12000225. Tonight I am not finding much beyond that.

There is a wiki partial number (last resort) search if you want to use it. I tried _ _ _ _ 4665 and got a page of hits. Too much to dig through on dial-up sorry.

The 71 were a side post and I cannot confirm that a different cable or terminal size was used with the HD battery. A build sheet from a 71 C20 with RPO T50 and 350/auto would be intersting to look at.

[tidmack]

Tim,

Thank you for your time. I'll do some more digging at lunch today and when I get home this evening.

My understanding (with A body cars) is that the heavy duty battery option was a side post and regular duty was top post. Now, I'm not sure how that translates to trucks and I should take a look at my SPID to see if there is a battery option. I'll be in touch tonight.

Jeff

[DeadheadNM]

Thanks for the help! It's always appreciated.

[camrycurt]

Tim,

Can you give us a quick primer on how to decipher the manual pages you posted up? I'm having a hard time figuring them out.

Do they list all of the applicable models before the part number, so that everything in the list to the left above the part number uses that same part? So, for example, on page 2-25 that you posted, the positive battery cable 8907366 that fits a 1970 C10 L6 is also the same part used on a 1961 Series 10-30 truck?

And on page 2-26, the 71-72 Series 10-30 6 cylinder Blazers (non D-D) and 71-72 Series 20-30 6 cylinder D-D trucks share the same cable, correct?

What does "D-D" stand for? How about "M.H.C."?

Thanks for the help!

[SS Tim]

OK stay tuned...

[SS Tim]

Originally Posted by camrycurt

Tim,

Can you give us a quick primer on how to decipher the manual pages you posted up? I'm having a hard time figuring them out.

Do they list all of the applicable models before the part number, so that everything in the list to the left above the part number uses that same part? So, for example, on page 2-25 that you posted, the positive battery cable 8907366 that fits a 1970 C10 L6 is also the same part used on a 1961 Series 10-30 truck?

And on page 2-26, the 71-72 Series 10-30 6 cylinder Blazers (non D-D) and 71-72 Series 20-30 6 cylinder D-D trucks share the same cable, correct?

What does "D-D" stand for? How about "M.H.C."?

Thanks for the help!

Actually you pretty much have it down.

The columns are broken down into applicable vehicles within the posted exclusions, in model year order for each service part number.

Both of your examples are correct.

D-D is Double-Duty the forward control P-series step van/chassis (think bread truck)
MHC is Motor Home Chassis which is generally a modified P-series chassis intended for RV body builders
If you have downloaded the catalog pages 78,79 and 80 have a full breakdown of the abbreviations.

[camrycurt]

Originally Posted by SS Tim

Actually you pretty much have it down.

The columns are broken down into applicable vehicles within the posted exclusions, in model year order for each service part number.

Both of your examples are correct.

D-D is Double-Duty the forward control P-series step van/chassis (think bread truck)
MHC is Motor Home Chassis which is generally a modified P-series chassis intended for RV body builders
If you have downloaded the catalog pages 78,79 and 80 have a full breakdown of the abbreviations.

Got it, Tim! Thanks so much for the help!