Scott Performance High Performance Spiral Core 10 mm Spark Plug Wire Set - Red - 180 Degree Plug Boots - Small Block Chevy 21267BLK Converts one-piece rear main seal

Converts one-piece rear main seal on 1986 and newer Small Block Chevy blocks to the old style

In 396-402 use 2500+ stall and lower gears

1989 Chevrolet R2500 CID 454 GAS

Optima Red / Yellow Top Batteries

Scott Performance High Performance Spiral Core 10 mm Spark Plug Wire Set - Red - 180 Degree Plug Boots - Small Block Chevy 21267BLK Converts one-piece rear main sealProduct Description: Spark Plug Wire Set High Performance Spiral Core 10 mm Red 180 Degree Plug Boots HEI Style Over Valve Covers Small Block Chevy Scott Performance Wire offers budget friendly spark plug wires, designed and manufactured in the U. S. A. From complete pre made sets to custom wire kits and accessories, Scott Performance has high performance solutions backed by proven reliability