Standard Ignition Distributor Vacuum Advance P/N:VC-170
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Help your classic GM's spark timing respond to changing engine load with the Standard Ignition Distributor Vacuum Advance VC-170. This vacuum advance control is a direct-fit replacement for many Chevrolet, GMC and Pontiac models, among them the 1969-1971 Chevrolet Impala and 1969-1970 Chevrolet Camaro. See the Buyer's Guide tab for the full list and engine details.
A distributor vacuum advance uses engine vacuum to advance ignition timing as engine load changes. If the original unit leaks or binds, timing advance may not respond as intended.
Precision calibrated: Calibrated for correct ignition advance.
Leak tested: Units are tested at 30HG maximum vacuum to confirm they do not leak.
Quality control: Standard is a global manufacturer of original equipment ignition products and controls quality at every stage, from componentry to the finished product.
Ignition heritage: Standard has served the automotive aftermarket since 1919 with broad ignition coverage.
Signs a vacuum advance may need replacing include hesitation or flat response on light throttle, reduced fuel economy at cruise, or a vacuum leak at the unit. Diagnose the cause before replacing the unit, because timing and vacuum problems can have other sources.
This part cross-references / interchanges with the following part numbers:
V374, DV1760, VC1760, 19110626, 1973421
Frequently Asked Questions
What does the VC-170 distributor vacuum advance do?
It uses engine vacuum to advance ignition timing as engine load changes on the listed Chevrolet, GMC and Pontiac applications.
Which vehicles does the VC-170 fit?
It fits many Chevrolet, GMC and Pontiac models, including the 1969-1971 Chevrolet Impala and 1969-1970 Chevrolet Camaro. See the Buyer's Guide tab for the full list and engine details.
Is the VC-170 tested for leaks?
Yes. Standard tests these units at 30HG maximum vacuum to confirm they do not leak, and each unit is precision-calibrated for correct ignition advance.
What signs suggest a vacuum advance may need replacing?
Possible signs include hesitation on light throttle, reduced fuel economy at cruise, or a vacuum leak at the unit. Diagnose the cause first, because other components can produce similar symptoms.
What part numbers does the VC-170 interchange with?
It interchanges with V374, DV1760, VC1760, 19110626 and 1973421.
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WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
