| V8JR | -- 05-25-2020 @ 12:41 PM |
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What is the purpose of the Spark Valve on the Holley 94 Carburetor and what models/years were they used? Any info on this much appreciated.
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| ford38v8 | -- 05-25-2020 @ 1:24 PM |
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They control the spark advance on 8BA distributors. Used on '48 pickups, '49 passenger and later. Alan
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| 40cpe | -- 05-25-2020 @ 3:07 PM |
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This is a short explanation: "At the carburetor, the SPARK CONTROL VALVE (that thing that looks like a Holley power valve sitting on the outside of the carb), uses a diaphragm and springs to mix the venturi signal and the manifold vacuum signal, so that the right instructions are sent to the Load O Matic advance canister." From this link: http://m571.com/yblock/loadomatic.htm I believe the spark valve started on the y-block
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| V8JR | -- 05-27-2020 @ 9:36 PM |
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Thanks for the insight - I am rebuilding an early 94 and they included a Spark Valve in the kit - learn something everyday
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