Classic custom cars High Output Alternator

V BELT MAXIMUM AMPERAGE IS 300A

For serpentine systems select 6G pulley 

Small Case Alternators

160amps @ 650rpms

Full amps @ 1800rpms

AutoTech Engineering Alternators require a .5 inch smaller belt than your OEM Alternator

AutoTech Engineering alternators need a minimum of 650rpm to charge.

Unless otherwise quoted or instructed, our units come with the OEM voltage output for plug-and-play alternators. The quoted voltage settings are already built into the alternator's voltage regulator. Remember that in PCM- and ECU-controlled vehicles, the vehicle's “brain/computer” controls the voltage.

Boosted Harness Option

A boosted Harness option is available at additional cost. If you pick this option your harness will come already dioded for you. You can pick from options of 15.3, 15.5 or 15.7 voltages.

What is a Bypass?
If you choose to have a bypass, you are wiring around the PCM or ECU voltage control. This allows us to customize the charging voltage beyond what the vehicle’s computer normally permits. In most cases, the battery warning light will remain illuminated.

Bypass charging voltage: 14.8V.

Important: A PCM/ECU bypass is required when using the boosted harness.

Need help wiring your bypass or have questions? Find out more here:

Tutorial videos & Frequently Asked Questions

Warranty: One year on parts and lifetime labor.

Order Timeframes
Build time is 14 days.
Powder coating adds up to 5 business days.
Shipping takes 5-7 days.

If you use Klarna, Sezzle, or Affirm, please allow an additional seven days for processing.

KEY FEATURES

We offer Multiple mounting options for:

• ALL AMERICAN BILLET
• Billet Specialties
• CVF
• HOLLY
• MARCH PERFORMANCE
• VINTAGE AIR

AND MANY MORE GENERIC BRACKETS

**NOTE: PLEASE VERIFY YOUR BRACKET MEASUREMENT

AND MOUNT BEFORE ORDERING ONLINE OR PROVIDE

US WITH THE ALTERNATOR PART NUMBER.  UNITS ORDERED

INCORRECTLY AND RETURNED RESULT IN A RESTOCKING FEE**