59-74 Distributor Vacuum Advance - Replacement

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The vacuum advance control unit on the distributor is intended to advance the ignition timing above and beyond the limits of the mechanical advance under light to medium throttle settings. When the load on the engine is light or moderate, the timing can be advanced to improve fuel ecomomy and
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271007
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Description
The vacuum advance control unit on the distributor is intended to advance the ignition timing above and beyond the limits of the mechanical advance under light to medium throttle settings. When the load on the engine is light or moderate, the timing can be advanced to improve fuel ecomomy and throttle response. Once the engine load increases, this "over-advance" condition must be eliminated to produce peak power and to eliminate the possibility of detonation ("engine knock").

Stamped B1
Specifications
GM Item No. 1116163
Base Unit of Measure EA
Net Weight 0.1
Special Order False
Car Years 1 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974
Part # 271007
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