Keep spark timing in step with engine load with the Standard Ignition distributor vacuum advance, part number VC-206. It is a direct-fit replacement for the 1975-1976 Cadillac Calais, Commercial Chassis, DeVille, Eldorado and Fleetwood. See the "Vehicles it fits" section for engine details.
A distributor vacuum advance control uses engine vacuum acting on a diaphragm to advance ignition timing under light-load conditions such as cruising. As vacuum drops under heavier load, timing returns toward its base setting.
- Precision calibration: calibrated for correct ignition advance.
- Leak-tested: units are tested at 30HG maximum vacuum to check that they do not leak.
- Original equipment ignition maker: Standard Ignition is a global manufacturer of original equipment ignition products and keeps quality control across the full manufacturing process, from componentry to finished product.
- Long aftermarket heritage: Standard Ignition has served the automotive aftermarket since 1919, with a focus on quality and broad ignition coverage.
Signs a vacuum advance may need replacing include hesitation or sluggish response on light acceleration, reduced fuel economy, or a diaphragm that no longer holds vacuum. Other faults can cause the same symptoms, so diagnose the ignition and vacuum system before you replace parts. If a failed vacuum advance is the cause, the VC-206 replaces it.
Interchange: V381 · DV1833 · VC1833 · 19110634 · 1973564
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
V381, DV1833, VC1833, 19110634, 1973564
Frequently Asked Questions
What does a distributor vacuum advance do?
It uses engine vacuum to advance ignition timing when engine load is light. As vacuum drops under heavier load, it lets timing fall back.
Which vehicles does the Standard Ignition VC-206 fit?
It is listed for the 1975-1976 Cadillac Calais, Commercial Chassis, DeVille, Eldorado and Fleetwood. Check the "Vehicles it fits" section for engine details.
How is the VC-206 tested?
Standard Ignition tests these units at 30HG maximum vacuum to check that they do not leak. Each unit is also precision calibrated for correct ignition advance.
What numbers does VC-206 interchange with?
It cross-references to V381, DV1833, VC1833, 19110634 and 1973564.
What are signs my vacuum advance may be failing?
Possible signs include hesitation on light throttle, reduced fuel economy, or a diaphragm that won't hold vacuum. Other faults can cause similar symptoms, so diagnose before replacing.
