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#1 |
Registered User
Join Date: May 2014
Location: Sacramento CA
Posts: 60
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what alternator do you guys run?
I nned to replace mine, not running any special headlights or stereo YET, but will be soon. want a cgrome or polished one. what amp do you guys run, and if possible a part # so I can get the right one.
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#2 |
Registered User
Join Date: Jun 2011
Location: United States
Posts: 158
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Re: what alternator do you guys run?
225-amp one wire GM from Powermaster
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#3 |
Registered User
![]() Join Date: Mar 2014
Location: Simi, CA
Posts: 495
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Re: what alternator do you guys run?
I run a Delco 10SI (AC-DELCO # 321-43, Lester #7127-12). It only produces 63 amps but it suits my needs and can be picked up at any Autozone for $49.99 with a lifetime warranty. I do have A/C but no other major electricity consumers like a electric radiator fan. No need to run some high output alternator without a reason. High output alternators are harder for the engine to turn resulting in decreased HP. There are several part numbers for the different mounting positions. The number above is for a 12:00 position, meaning the plug is directly on top.
Here is a link to some usefull 10SI & 12SI information: http://www.madelectrical.com/electri...elcoremy.shtml |
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#4 |
Registered User
Join Date: Feb 2013
Location: Northwest NJ
Posts: 684
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Re: what alternator do you guys run?
Delco 10si is a good choice for these trucks....you can get rid of the voltage regulater because the 10si has one built in. They are cheap and are available everywhere.
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#5 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: what alternator do you guys run?
HO-ADR0336 - 10SI-140 AMP- 3 Wire Setup - $127.95
How can you go wrong for less than a buck an amp? This is from DBElectrical.com and it looks like the original factory unit (which is why I picked it). Gonna make my ammeter angry.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#6 |
Registered User
Join Date: May 2014
Location: Sacramento CA
Posts: 60
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Re: what alternator do you guys run?
what is the difference between a one wire and 3 wire besides the obvious? do these trucks come stock with a one wire?
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#7 | |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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Re: what alternator do you guys run?
Quote:
Read this. ......... http://www.madelectrical.com/electri...hreewire.shtml
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#8 |
Registered User
Join Date: Apr 2004
Location: Las Vegas, NV
Posts: 2,188
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Re: what alternator do you guys run?
Before the LS motor I was very happy with a Powermaster 105A and converting to 1 wire. Prior to that the 700W RMS stereo would fry stock alts and regulators so often that the "warranty exchange" guys knew me by name at my local parts store. Mine was chrome and I think it ran me around $75 several years ago
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RIP EastSideLowLife '72 C20 SWB convert. 5 lug, LS1/4l60e |
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