Accel technical support

FAQ's

• What spark plug gap should I use when using the ACCEL HEI coil?

  .045 is a good starting point. Check your plugs after 100 miles of driving. The white porcelain around the electrode of a properly gapped plug should have khaki tan coloration. If the plugs look black, close the gap by .005 to .040. If the porcelain is white, open the gap by .005 to .050 to cool the operating temperature of the plug.
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• Do I use a ballast resistor with ACCEL Super Coil #140001?

  Yes, you will need a ballast resistor when using ACCEL Super Coil #140001 with a Accel Points Conversion Kit, PN's 2010ACC, 2020, or Mallory Unilite or Magnetic Breakerless Ignition Distributor. To use with a points style distributor, additional resistance is needed to get to 3.0 OHMs.
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• What is the difference between ACCEL coils PN 8140 and PN 8145ACC and should I use a ballast resistor?

  The ACCEL PN 8140 has 1.4 ohms primary resistance and will need a ballast resistor when used with a point style distributor. The ACCEL PN 8145ACC has 0.7 ohms primary resistance and will require a ballast resistor when used with a Mallory Unilite or Magnetic Breakerless Ignition Distributor.
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• How do you adjust the ACCEL distributor’s vacuum advance timing?

  Insert a 3/32 hex key into the vacuum port and turn clockwise to increase the advance. Turn counterclockwise to reduce the vacuum advance.
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• What ACCEL points eliminator kit do I need to convert an OEM point distributor to electronic?

  GM V8 1957-74: ACCEL PN 2010ACC Ford V8 1957-74: ACCEL PN 2020
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• What ACCEL distributor will fit my GM Vortec V8?

  ACCEL # 59132, ACCEL Performance Distributor - 96-00 Chevy Vortec V-8
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• What HEI distributor coil do you recommend for my ACCEL HEI unit?

  You will need to look at your original coil. If you have red and yellow OEM primary wires, use ACCEL #140003. If you have red and white OEM primary wires, use ACCEL #140005.
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• Where do I return my ACCEL Opti-Spark II broken distributor for exchange?

  Please refer to the “support” section of our website to fill out a repair form. https://www.holley.com/support/warranty/
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