Pertronix Chevy Adjustable Vacuum Advance Canister, GM HEI Distributor

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Item Number: 12390
The Pertronix adjustable vacuum advance canister allows you to optimize ignition advance on your OE HEI distributor to maximize part throttle performance and cruise speed efficency. Danchuk # 12390 will work on any 1955-1957 classic Chevy running an OE GM HEI distributor as well as other vehicles you may have in your collection.

Danchuk has the largest selection of quality 55, 56, 57 parts for your classic Chevy project.


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