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11-04-2008, 11:35 PM
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#1 |
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Registered User
Join Date: Oct 2008
Location: Illinois
Posts: 23
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updating alternator, ext to int
Oks, I am sure this has been hashed out before, I just can't find it on this site is all. I have a '71 small block, 4 x 4 I am trying to get up and keep running. I am attempting to move the alternator to the left side, instead of making all the external regulator leads to the opposite side, I want to just change it over to an internal regulator style. I have been getting so much conflicting information. I know it can't be hard, I think I have it now, but for some reason the battery shows weak at times. I had the battery tested two different places, it shows good. I have attempted to make it a one wired set up....oks guys, let get me out of this situation...I would appreciate it....
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11-05-2008, 01:45 AM
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#2 |
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Registered User
 
Join Date: Dec 2006
Location: Pueblo West
Posts: 264
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Re: updating alternator, ext to int
i had both my alt. and bat. checked twice and both checked out fine but the bat. kept dying on me while driving. Turns out ext alt. was puting out just enouf juice to pass but not enouf to compete with my small block. I went in and bought an internal alt. and haven't had to think about it since.
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11-05-2008, 02:03 AM
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#3 | |
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Gone to greener pastures
Join Date: May 2007
Location: Gateway to the Delta
Posts: 7,354
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Re: updating alternator, ext to int
Quote:
I did it; and the wiring part was about a 10 minute job after the alternator was installed. You can get a replacement alternator plug at almost any auto supply for under $10 to sanitize the appearance. http://67-72chevytrucks.com/vboard/s...d.php?t=119379
__________________
'69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck |
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11-05-2008, 02:29 AM
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#4 |
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Official Site Guitar Shredder
Join Date: May 2006
Location: Oz
Posts: 3,955
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Re: updating alternator, ext to int
Have you though about a one wire..? You can pick up one from napa for around 70/80 bucks....The ones i got from both trucks are in 90 and 120 amp models......Saves the factory harness, And i have had no issues with mine.......
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11-05-2008, 08:13 AM
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#5 | |
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Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: updating alternator, ext to int
Quote:
When I bought my truck the PO had moved it over to the right side. He just extended the wires and left the regulator mounted in its original place. s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. 
Last edited by Sport/Truck; 11-05-2008 at 08:13 AM. |
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11-05-2008, 08:31 AM
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#6 |
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Registered User
Join Date: Jun 2008
Location: South Florida
Posts: 11,375
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Re: updating alternator, ext to int
I changed mine to a 120 one wire set up to the right side of the motor. No issues and very simple....bought the plug at advanced auto, ran two wires and done.
__________________
Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild |
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11-05-2008, 08:38 AM
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#7 |
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Registered User
Join Date: Apr 2007
Location: Kalamazoo, Michigan, USA
Posts: 538
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Re: updating alternator, ext to int
http://67-72chevytrucks.com/vboard/s...d.php?t=119379
more good info here- http://www.alternatorparts.com/FAQ.htm
__________________
1970 K20, 350--- SOLD 05 silverado extended cab short box- duramax Jeep wrangler unlimited |
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11-05-2008, 11:55 PM
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#8 |
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Registered User
Join Date: Oct 2008
Location: Illinois
Posts: 23
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Re: updating alternator, ext to int
Thank gus, it all helps.on the single wire from the parts store, does that still let my cluster ampmeter fuction properly?..yeas, the orginal alternator was on the left, then put it on the right....also, I want to install a tach, mainly for other people who might drive the truck and not be aware if it is in Hi or Lo range, not too long ago my son was driving the truck and smoked the 350 I had in, went I dug into it found that it was in Lo range, I am sure he was running at highway speed in Lo...the 350 must of likes that 6,000r's for a few miles..in the regards to the the tach install, it has HEI update..thanks, I appreciate all of the help
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