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#1 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
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72 c10 alternator question
can somebody tell me the ac delco alternater part number. my truck has a/c and a 350 engine. thanks
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#2 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,250
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Re: 72 c10 alternator question
10 SI? Or did you want the 7 or 8 digit GM number?
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#3 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
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Re: 72 c10 alternator question
i need to buy one and my local parts places want almost a hundred bucks plus tax. there 45.00 on amazon but i need the correct a/c delco number to get the highest output. i dont want a 1 wire or internally regulater. just a stock hi output direct replacement.
thanks
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#4 |
Registered User
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Location: KINGSPORT,TN.
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Re: 72 c10 alternator question
found it.....
gm number 19135685 ac delco gold 3342127 63 amp $59.00 delivered amazon no core required
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#5 |
Senior Member
![]() Join Date: May 2010
Location: Wisconsin & Arizona
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Re: 72 c10 alternator question
Rock Auto shows that as the 2 groove pulley version. They also have the single groove version. Their price on either is only $32.99 including a $6 core charge. Shipping and sales tax is additional.
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Jim Last edited by FirstOwner69; 10-22-2021 at 12:44 AM. |
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#6 |
Senior Member
![]() Join Date: Mar 2015
Location: washington
Posts: 2,233
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Re: 72 c10 alternator question
As you can see there are a bunch to choose from.
They go from lowest amperage to the highest at the bottom. |
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#7 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
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Re: 72 c10 alternator question
yes i want a 2 groove pulley because my a/c isnt restored yet this way i can have dual wp / alt belts and its 63 amp
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#8 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,086
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Re: 72 c10 alternator question
Be aware if your truck came with the 37 amp alternator it has a different wiring harness than a truck that came with the 63 amp alternator.
This is not shown on any of the commonly available schematics. The 2 that I have parted the harnesses weren't in the best shape so I've never seen a complete unmolested one. But there are definite differences.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#9 |
Registered User
![]() Join Date: Aug 2019
Location: Cheraw
Posts: 1,305
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Re: 72 c10 alternator question
HO455 is the difference in the gauge size of the output wire?
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#10 |
Registered User
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Location: KINGSPORT,TN.
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Re: 72 c10 alternator question
for decades i,ve upgraded the alternators with no problems ever. its not like your drawing max amps constantly
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#11 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,086
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Re: 72 c10 alternator question
The most complete one I've seen appeared the have the same size wire but there were 2 of them coming off the alternator. One went to an insulated post (Same style as the one next to the battery) near the horn location. There was a second post a couple of inches from the one with a jumper wire between them and some other wires to the voltage regulator.
The other wire I assume went to the battery like normal but, the harness was seriously hacked and it wasn't worth saving so I trashed it. I wish I could come across a complete one to see how GM actually wired it. It is possible that GM just added a second harness to a regular 37 amp harness. I believe the extra posts were provided to allow customers a place to hook their large amperage loads near or at the junction point of the main harness where proper voltage sensing would occur.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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