Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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HEI Advance Curve Kit

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HEI Advance Curve Kit

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Please NOTE the following about this product:

  • This item is sold as a kit.



Q & A

What's in the Box

Modifies any GM HEI distributor with either clockwise or counterclockwise rotation and offers plenty of curve possibilities.  Center plate eliminates overcentering of centrifugal weights.  Comes complete with detailed instructions.

NOTE: Installation of this kit may alter emission levels.

550-929 Instructions (PDF) 

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