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DRR Sportsman
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What alternator are people running these days?
 
Posts: 859 | Location: Georgia | Registered: May 09, 2008Reply With QuoteReport This Post
DRR Pro
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For most of my SBC builds I install a common auto parts store alternator. Select an alternator of 80 - 100-amp rating. In some situations, a factory mounting will work, in other situations a custom mounting will be built. It will be wired just as if it were an OE install. I see no reason to do otherwise. One thing of importance, select pulleys that limit the alternator speed. Spinning the alternator approximately engine speed is completely sufficient.


Larry Woodfin



 
Posts: 1869 | Location: Kilgore TX | Registered: March 12, 2004Reply With QuoteReport This Post
DRR Trophy
Picture of Rodney Pryor
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House of Payne
 
Posts: 126 | Location: Richmond, VA | Registered: December 07, 2002Reply With QuoteReport This Post
DRR Elite
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#2005 16volt 120amp from East Coast Alternators in both cars
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Trophy
Picture of Little Chief
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My wife bought me a 16 volt super mini from HOP 2 years ago for Christmas. It's a quality piece of equipment and does the job well.
 
Posts: 241 | Location: Kilgore Texas | Registered: July 15, 2019Reply With QuoteReport This Post
DRR Pro
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I use one 12v battery and never charge when at the track………… NEVER!

 
Posts: 2647 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post
DRR Top Comp
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PM sent.


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Posts: 4244 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post



DRR Top Comp
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East Coast Ultra Mini 16 volt on mine. Seems to work okay. I put the maintainer on it at the track but lately it seems I can't get past first round so no real reason. LOL


Clowns to the left of me, Jokers to the right. Here I am.......
 
Posts: 5332 | Location: stuck in the middle with you! | Registered: March 11, 2002Reply With QuoteReport This Post
DRR Sportsman
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If you have a 12 volt system I like an oem gm alternators. Easy to wire in and also easy to find a replacement if needed. As Larry said watch pulley ratio so you don’t over speed the alternator. If on a 16 volt system then I would probably go with house of Payne.
 
Posts: 515 | Location: Going to or returning from the chipmine. | Registered: July 01, 2011Reply With QuoteReport This Post
DRR Pro
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quote:
One thing of importance, select pulleys that limit the alternator speed. Spinning the alternator approximately engine speed is completely sufficient.


Good advice for a circle track car. For drag racing I use 2 to 1 which I believe is a better choice.

Some engines idle very low which can limit the alternator output. My engine idles 1400 rpm both in neutral, as well as in gear. I use 2 gauge charging wire.

Power Master site says their alternators will take up to 20,000 rpm for short periods.
 
Posts: 2647 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post
DRR Sportsman
Picture of TomR
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My old single wire alt couldn't keep up with the demands and the car was inconsistent. Once I installed a grid, I could see the alternator struggling to reach 12v after the shift. It would actually drop to 10v and barely make it back to 12v by the end of the run.

I installed a 100amp Powermaster single wire alt and it straightened out the problem.


72 Nova "Hooptie"
 
Posts: 782 | Location: Hanover, MD | Registered: June 20, 2016Reply With QuoteReport This Post
DRR S/Pro
Picture of Eman
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I've had a Powermaster alternator with the low mount aluminum bracket and pulley on my car for over 20 years. It works fine, had to have a regulator replaced once at a local shop. Keep a spare belt but have never needed it. Have a volt gauge on the dahs so I can see it's working. 12V simple and reliable.
 
Posts: 1565 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR Pro
Picture of 67TSCHEVY2
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east coast 16 with their crank pulley
 
Posts: 1259 | Location: middle georgia | Registered: July 20, 2003Reply With QuoteReport This Post
DRR Pro
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Running the alternator my car was delivered with new, 63 amp Delcotron, 1-wire converted, running 1:1 pulley ratio, with a single Group 31 battery.
It's adequate.


"Despite the high cost of living, it remains popular."
Dave Cook
N375
 
Posts: 1816 | Location: Indy | Registered: November 21, 2008Reply With QuoteReport This Post



DRR Pro
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Get the biggest alternator you can fit. Wont hurt anything


--------------------
Bob Payton
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309Z, 393, 3093, 8X93


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Posts: 1996 | Location: Michigan | Registered: November 14, 2001Reply With QuoteReport This Post
DRR Sportsman
Picture of gd31
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If using a high amp alternator be sure to use at least a 2ga wire. The 10ga wire that came with the switch panel wiring kit come to find out wasn't big enough Mad




 
Posts: 600 | Location: Greenwood Indiana | Registered: November 16, 2000Reply With QuoteReport This Post
DRR Pro
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quote:
If using a high amp alternator be sure to use at least a 2ga wire


Agreed on the 2 gauge minimum. If tying the alternator wire to the starter (my preferred method) using the same size wire on alternator as battery to starter is a wise choice.
 
Posts: 2647 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post
DRR Sportsman
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quote:
Originally posted by markemark:
quote:
If using a high amp alternator be sure to use at least a 2ga wire


Agreed on the 2 gauge minimum. If tying the alternator wire to the starter (my preferred method) using the same size wire on alternator as battery to starter is a wise choice.


Agreed!
One of the most common errors on race cars.


BG
 
Posts: 760 | Location: Florence, SC | Registered: August 25, 2019Reply With QuoteReport This Post
DRR S/Pro
Picture of Eman
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People must have some rockin stereos in their cars to need all of that amperage.
 
Posts: 1565 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR S/Pro
Picture of CURTIS REED
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quote:
Originally posted by Eman:
People must have some rockin stereos in their cars to need all of that amperage.


Agreed. LOL



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Posts: 3120 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post
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