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Moroso Adjustable Vacuum Advance Kit 1975-81 GM H.E.I. Distributors

710-72315

made in usa

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Adjustable Vacuum Advance Kit 1975-81 GM H.E.I. Distributors
$38.99
Adjustable Vacuum Advance Kit
  • 1975-81 GM H.E.I. Distributors
  • Estimated to ship direct from manufacturer
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    72315 - Moroso Adjustable Vacuum Advance Kit is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from Exactly as advertised Vacuum advance issues solved. With a little test and tune it allows you to get just the setting for your engine
    Date published: 2015-08-26
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    will this help reduce existing vacuum ?

    Asked by: Gary Marx
    No, this is made to let the engine load change the ignition advance by using the vacuum of the engine.
    Answered by: Rusty B
    Date published: 2023-10-01
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    Note: Will not work on MSD Pro Billet HEI 121-8365 or 121-83653.Emission Code 3: This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: 1965 and older ...
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    Adjustable Distributor Collar; Chevrolet V8/90 deg. V6 Engines; Moroso DuraBillet/MSD Distributors; Distributors w/Fixed Collars Can Be Machined Smooth; Steel; • Precision machined steel collar can be positioned on distributor housing to adjust installed height for dead-center gear alignment• Also aligns ...
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    Kit Contains 2 Weights, 3 Sets of Springs, 2 Pairs of Nylon Bushings & Special Center Plate. Instuction Sheets with Graphs Showing Typical Advance Rates with Various Spring/Weights are also Included. GM.
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