Chevy HEI Performance Distributors

Chevy HEI Performance Distributors Distributors have high output coils and adjustable vacuum advances, perfect for upgrading stock HEI distributors for higher RPM. Fit small and big block Chevy (except 348 and 409). Housings are CNC-machined 6061-T6 aluminum with an upper support bearing to provide accurate timing at higher RPM. Include snapon spark plug wire retainer and instructions. ALL81200.........HEI Distributor With Coil And Red CapALL81202.........HEI Distributor With Coil And Black Cap Break-In Period Required• Prior to completion of installation, the distributor gear should have received a coating of zinc or moly based grease (grease sold separately). It is the responsibility of the installer to apply this grease.• Do not use synthetic oil during break-in period. Once break-in period is complete, any suitable oil of choice can be used.• On modified engines with oil pressure above 70 psi (cold), the gear should be broken-in with racing grade mineral oil.• Monitor gear wear aft