Keep your distributor's timing advance responding to engine vacuum with the Standard Ignition distributor vacuum advance VC-302. This vacuum advance control is a direct-fit replacement for the listed applications, including the 1978-1986 Chevrolet C10, 1978-1986 Chevrolet K10, 1978-1981 Oldsmobile Omega, 1979-1986 GMC C1500, 1979-1980 Pontiac Firebird and 1980-1982 Chevrolet Impala. It covers 77 Buick, Chevrolet, GMC, Oldsmobile and Pontiac applications. See the Buyer's Guide tab for the full list and engine details.
A vacuum advance mounts on the distributor and uses engine vacuum to advance ignition timing. Timing advances when vacuum is high, such as during light-load cruising. As vacuum drops, timing is allowed to return toward base.
- Precision calibrated: Calibrated for correct ignition advance.
- Leak tested: Units are tested at 30HG maximum vacuum to check that they do not leak.
- Quality control: Standard Ignition is a global manufacturer of original equipment ignition products. It maintains quality control through the whole manufacturing process, from componentry to finished product.
- Heritage: Standard Ignition has served the automotive aftermarket since 1919, with broad ignition coverage.
Signs this part may need replacing: Look for hesitation or sluggish response at part throttle, reduced fuel economy, a vacuum leak at the advance unit, or timing that no longer advances when vacuum is applied. These symptoms can have other causes, so diagnose the ignition and vacuum systems before replacing parts.
Interchange: V482 · DV1874 · VC1703 · 19138061 · 1973626
This part cross-references / interchanges with the following part numbers:
V482, DV1874, VC1703, 19138061, 1973626
