Standard Ignition Distributor Vacuum Advance P/N:VC-373
Keep spark timing responding to engine vacuum with the Standard Ignition Distributor Vacuum Advance VC-211. This distributor vacuum advance control is a direct-fit replacement for the listed applications, including the 1975-1981 Chevrolet Camaro, 1975-1981 Chevrolet C10, 1975-1981 GMC Jimmy, 1975-1979 Oldsmobile Omega, 1975-1979 Pontiac Firebird and 1977-1979 Buick Skylark.
A vacuum advance uses engine vacuum to advance ignition timing under light-load driving and lets timing return as vacuum drops. A leaking or sticking unit may be behind hesitation at light throttle or reduced fuel economy. If the vacuum advance is the cause, the VC-211 replaces it.
Applications include 90 Chevrolet, GMC, Buick, Oldsmobile and Pontiac vehicles from 1975 to 1981. See the Buyer's Guide tab for the full list and engine details.
Interchange: 2-5311
25311 · V384 · 5311 · DV1836 · VC1836 · 19138060 · 1973517 · 1973621 · VC211T
This part cross-references / interchanges with the following part numbers:
What does a distributor vacuum advance do?
It uses engine vacuum acting on an internal diaphragm to advance ignition timing when the engine is under light load. Timing then returns as vacuum drops.
What are signs a vacuum advance may need replacing?
Signs include hesitation or flat response at light throttle, reduced fuel economy, or a unit that won't hold vacuum. Diagnose first, because other ignition or vacuum problems can cause similar symptoms.
Is the VC-211 tested for leaks?
Yes. Standard tests these units at 30HG maximum vacuum to confirm they do not leak.
Which vehicles does the VC-211 fit?
It fits 90 listed Chevrolet, GMC, Buick, Oldsmobile and Pontiac applications, including the 1975-1981 Chevrolet Camaro and 1975-1981 GMC Jimmy. See the Buyer's Guide tab for the full list.
What part numbers does the VC-211 interchange with?
It interchanges with numbers including 2-5311, V384, DV1836, VC1836, 19138060, 1973517, 1973621 and VC211T. The Interchange line lists every number.
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.