HomeStandard Ignition VC-301 Distributor Vacuum Advance
Part #: VC-301

Standard Ignition VC-301 Distributor Vacuum Advance

68 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet and GMC, P20, P30, R3500, V3500, P2500, P3500, R20, R30, V30, R2500, V20, V2500, C20, C30, K20, K30, C2500, C3500, K2500, and K3500
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Overview of Standard Ignition Distributor Vacuum Advance VC-301

The Standard Ignition VC-301 Distributor Vacuum Advance is designed to provide precise ignition timing control for Chevrolet and GMC trucks. This vacuum advance unit features a single hose connector, ensuring compatibility with a range of heavy-duty models including C20, K2500, and P3500 series vehicles.

  • Single hose connector for vacuum line attachment
  • Compatible with Chevrolet and GMC truck models from C20 to R3500
  • Part number VC-301 for easy identification and replacement
  • Designed to maintain proper ignition timing under varying engine loads
  • Durable construction suitable for heavy-duty truck applications

Detailed Product Description

The VC-301 distributor vacuum advance by Standard Ignition is engineered to optimize ignition timing by adjusting the distributor advance based on engine vacuum. This part is essential for maintaining engine efficiency and performance in Chevrolet and GMC trucks, including models such as the K20, C3500, and V2500. Featuring one hose connector, it simplifies installation and ensures a secure vacuum line connection. The vacuum advance helps improve fuel economy and reduces engine knocking by advancing ignition timing during light load conditions.

Compatible Vehicles and Applications

This distributor vacuum advance is compatible with a wide range of Chevrolet and GMC trucks, including:

  • Chevrolet C20, C30, C2500, C3500
  • GMC K20, K30, K2500, K3500
  • Chevrolet P20, P30, P2500, P3500
  • GMC R20, R30, R2500, R3500
  • Chevrolet V20, V30, V2500, V3500

Common Issues Addressed by VC-301 Distributor Vacuum Advance

  • Irregular or delayed ignition timing causing poor engine performance
  • Engine knocking or pinging under light load conditions
  • Reduced fuel efficiency due to improper vacuum advance operation
  • Difficulty maintaining stable idle speed
  • Vacuum leaks from worn or damaged advance units

Installation Notes and Tips

  • Ensure the vacuum hose is securely connected to the single hose connector on the unit
  • Verify compatibility with your specific Chevrolet or GMC truck model before installation
  • Inspect the distributor and vacuum advance mounting points for wear or damage
  • Follow manufacturer torque specifications when securing the vacuum advance
  • Test ignition timing after installation to confirm proper advance operation

Quality Assurance and Warranty

Standard Ignition parts, including the VC-301 distributor vacuum advance, are manufactured to meet or exceed OEM specifications. This part undergoes rigorous quality control to ensure reliable performance in demanding truck applications. Warranty coverage details should be confirmed with the product documentation or supplier.

This part fits 68 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1989ChevroletP204.8LL6N/AOE No. 1103719
1989ChevroletP304.8LL6N/AOE No. 1103719
1989ChevroletP307.4LV8N/AOE No. 1103717
1989ChevroletR35007.4LV8N/AOE No. 1103717
1989ChevroletV35007.4LV8N/AOE No. 1103717
1989GMCP25004.8LL6N/AOE No. 1103719
1989GMCP35004.8LL6N/AOE No. 1103719
1989GMCP35007.4LV8N/AOE No. 1103717
1989GMCR35007.4LV8N/AOE No. 1103717
1989GMCV35007.4LV8N/AOE No. 1103717
1988ChevroletP204.8LL6N/AOE No. 1103719
1988ChevroletP307.4LV8N/AOE No. 1103717
1988ChevroletP304.8LL6N/AOE No. 1103719
1988ChevroletR204.8LL6N/AOE No. 1103719
1988ChevroletR304.8LL6N/AOE No. 1103719
1988ChevroletR307.4LV8N/AOE No. 1103717
1988ChevroletV307.4LV8N/AOE No. 1103717
1988ChevroletV304.8LL6N/AOE No. 1103719
1988GMCP35004.8LL6N/AOE No. 1103719
1988GMCP35007.4LV8N/AOE No. 1103717
1988GMCR25004.8LL6N/AOE No. 1103719
1988GMCR35004.8LL6N/AOE No. 1103719
1988GMCR35007.4LV8N/AOE No. 1103717
1988GMCV35004.8LL6N/AOE No. 1103719
1988GMCV35007.4LV8N/AOE No. 1103717
1987ChevroletP204.8LL6N/AOE No. 1103636, 719
1987ChevroletP307.4LV8N/AOE No. 1103717
1987ChevroletP304.8LL6N/AOE No. 1103636, 719
1987ChevroletR204.8LL6N/AOE No. 1103636, 719
1987ChevroletR307.4LV8N/AOE No. 1103717
1987ChevroletR304.8LL6N/AOE No. 1103636, 719
1987ChevroletV204.8LL6N/AOE No. 1103636, 719
1987ChevroletV304.8LL6N/AOE No. 1103636, 719
1987ChevroletV307.4LV8N/AOE No. 1103717
1987GMCP25004.8LL6N/AOE No. 1103636, 719
1987GMCP35007.4LV8N/AOE No. 1103717
1987GMCP35004.8LL6N/AOE No. 1103636, 719
1987GMCR25004.8LL6N/AOE No. 1103636, 719
1987GMCR35004.8LL6N/AOE No. 1103636, 719
1987GMCR35007.4LV8N/AOE No. 1103717
1987GMCV25004.8LL6N/AOE No. 1103636, 719
1987GMCV35004.8LL6N/AOE No. 1103636, 719
1987GMCV35007.4LV8N/AOE No. 1103717
1986ChevroletC204.8LL6N/AOE No. 1103636
1986ChevroletC304.8LL6N/AOE No. 1103636
1986ChevroletC307.4LV8N/A
1986ChevroletK204.8LL6N/AOE No. 1103636
1986ChevroletK304.8LL6N/AOE No. 1103636
1986ChevroletP204.8LL6N/AOE No. 1103636
1986ChevroletP304.8LL6N/AOE No. 1103636
1986GMCC25004.8LL6N/AOE No. 1103636
1986GMCC35004.8LL6N/AOE No. 1103636
1986GMCK25004.8LL6N/AOE No. 1103636
1986GMCK35004.8LL6N/AOE No. 1103636
1986GMCP25004.8LL6N/AOE No. 1103636
1986GMCP35004.8LL6N/AOE No. 1103636
1985ChevroletC204.8LL6N/AOE No. 1103636
1985ChevroletC304.8LL6N/AOE No. 1103636
1985ChevroletC307.4LV8N/A
1985ChevroletK204.8LL6N/AOE No. 1103636
1985ChevroletK304.8LL6N/AOE No. 1103636
1985ChevroletP204.8LL6N/AOE No. 1103636
1985GMCC25004.8LL6N/AOE No. 1103636
1985GMCC35004.8LL6N/AOE No. 1103636
1985GMCK25004.8LL6N/AOE No. 1103636
1985GMCK35004.8LL6N/AOE No. 1103636
1985GMCP25004.8LL6N/AOE No. 1103636
1985GMCP35004.8LL6N/AOE No. 1103636

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

191380624V105957-7577DV1869V492VC1721

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.