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Concept One Pulleys

  • Home
  • Products
    • Chevy Pulley Systems
      • Chevy Small Block Pulley Systems
      • Chevy Big Block Pulley Systems
      • Chevy LS Pulley Systems
      • Chevy LT Victory Series Kit
      • Chevy Driver Series Pulley Systems
      • Chevy LS Supercharger Pulley Systems
    • Ford Pulley Systems
      • Ford Small Block Pulley Systems
      • Ford 351 Cleveland Pulley Systems
      • Ford FE Pulley Systems
      • Ford 429-460 Big Block Pulley Systems
      • Ford 351 Clevor Pulley Systems
    • Parts
      • Power Steering Hose Kits
      • Reservoirs
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      • Mass Air Flow Housing Kit
      • Compressor Mounts
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    • FAQs
    • How to Choose an Alternator
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    • Cooling System Basics
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Proudly Made in the USA
  • Home
  • Products
    • Chevy Pulley Systems
      • Chevy Small Block Pulley Systems
      • Chevy Big Block Pulley Systems
      • Chevy LS Pulley Systems
      • Chevy LT Victory Series Kit
      • Chevy Driver Series Pulley Systems
      • Chevy LS Supercharger Pulley Systems
    • Ford Pulley Systems
      • Ford Small Block Pulley Systems
      • Ford 351 Cleveland Pulley Systems
      • Ford FE Pulley Systems
      • Ford 429-460 Big Block Pulley Systems
      • Ford 351 Clevor Pulley Systems
    • Parts
      • Power Steering Hose Kits
      • Reservoirs
      • Thermostat Housing
      • Mass Air Flow Housing Kit
      • Compressor Mounts
  • How To Buy
  • Resources
    • FAQs
    • How to Choose an Alternator
    • Bolt Torque Specs
    • Cooling System Basics
    • Videos
    • Newsletter
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Proudly Made in the USA

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How to Choose an Alternator

Download the PDF version of this page here



Choosing an Alternator...

Selecting the proper alternator is essential to the life of an electrical system on any vehicle. An undersized or incorrectly installed alternator can cause electrical failures, damage and even fire in some extreme cases. If you have questions about what kind of alternator your vehicle needs, feel free to contact Powermaster at 630-957-4019 or tech@powermasterperformance.com. You can also contact Concept One for questions about your alternator and pulley kits.

  • Make a list of your electrical components
  • Determine amp draw on each and total
  • Select an alternator with more amps than estimated to ensure long life of the alternator
  • See our website for additional tips
  • Call our Tech Support Line for selection assistance...

Important Stuff
It is important to know that the alternator cannot output full capacity at idle. Also, electrical demands are generally higher at idle mostly due to engine cooling fans running. When choosing an alternator, make sure that the alternator can output enough amperage at idle to cover the electrical demands.
 
Our alternators are shown with both top end amperage and idle amperage.

Available alternators:

CS130D               AD244
120/95 amp (standard)   180/135 amp (optional)
165/100 amp (optional)   220/150 amp (optional)

Amp draw of common auto accessories:

 Accessory   Example Amps   Your Amps 
Headlights / Tail Lights 10  
Halogen Bulbs 10 ea  
Dash Lights 2 - 4  
Power Windows 15 - 20  
Dash Lights 2 - 4  
Air Conditioning 19 - 22  
Electric Fans 30 - 50  
Radio 4 - 10  
Audio Amplifiers 15 - 250+  
HEI Ignition 10 - 12  
Electric Water Pump 18 - 25  
Electric Fuel Pump 8 - 10  
Air Suspension Compressors 20 - 50  
Other    
TOTAL AMP DRAW    

Useful formulas:

Amps = Watts / Volts

Amps = Volts / 0hms

Charge Wires

  • One of the most missed install problems is the proper charge wire.
  • The connection between the alternator and the battery is very important.
  • An undersized charge wire, especially with high output units or improperly attached terminals, could result in voltage/amperage loss and alternator and wire damage.
  • Powermaster (630-957-4019 or tech@powermasterperformance.com) offers charge wires, ready to use, in various lengths with terminals on both ends and a battery terminal boot installed.

Charge Wire Size Chart

 AMPS   Up to 4'   4' - 7'   7' - 10'   10' - 13'   13' - 16'   16' - 19'   19' - 22'   22' - 28' 
35 - 50 12 12 10 10 10 8 8 8
50 - 65 10 8 8 6 6 6 6 4
65 - 85 10 8 8 6 6 4 4 4
85 - 105 8 8 6 4 4 4 4 2
105 - 125 6 6 4 4 2 2 2 0
125 - 150 6 6 4 2 2 2 2 0
150 - 175 4 4 4 2 2 0 0 0
175 - 200 4 4 2 2 0 0 0 00



Download the PDF version of this page here

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