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Vacuum Advance with Dual Point Disrtibutors

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  • Dan Timberlake
    replied
    THE 7TH edition "Chevrolet power" book has a section on the H.O. 350 ZZ3 engine. One section includes some carb calibration done by Holley engineers in quest of best quarter mile times in a 1989 Camaro. Among the recommendations for a 4010 750 double pumper are carb spacers, accelerator pump shooter hole diameters, and primary and secondary jet sizes. Also mentioned is "connecting the ... distributor's vacuum advance mechanism to a ported spark vacuum source enhanced throttle response." It is not often that vac advance gets positive comments in high performance tech articles.

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  • WCP
    replied
    R1's and R2's had the vacuum advance unit. The R3's did not.

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  • Vacuum Advance with Dual Point Disrtibutors

    Were Stubaker dual point distributors equipped with a vacuum advance mechanism or was it purely mechanical advance ?
    thanks,
    Dan
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