Black Chevrolet LT1 Gen. 1 1992-1994 Opti-Spark I Distributor Cap and Rotor Kit Holden and drain plug are not

and drain plug are not included

and HG models — those are American small block engines requiring a different distributor

delivering up to 320 LPH (85 GPH) at up to 90 PSI

and weekend performance builds

the manifold supports improved combustion efficiency

Black Chevrolet LT1 Gen. 1 1992-1994 Opti-Spark I Distributor Cap and Rotor Kit Holden and drain plug are notBring cleaner spark routing back to an LT based Opti Spark distributor with a Gen. 1 cap and rotor service kit. Opti Spark Generation Gen. 1 fitment matters because early and late Opti Spark cap and rotor layouts are not interchangeable. LT Based Ignition Service The cap and rotor help refresh the distributor side spark routing on compatible LT1 LT4 applications. Installation Notes Confirm Opti Spark generation, model year, and distributor style