GM Gen IV LS3 Bare Aluminium Cylinder Heads 260cc/70cc - Chevy Holden HSV Holden 6 Secondary Resistance: 8

Secondary Resistance: 8

Provides a high positive fill point to help keep air out of your cooling system

302 and 351 engines requiring a mechanical fuel pump

3/8” UNF

5“ BANJO Half-Wrap Red CAL-4566/140-BK 14

GM Gen IV LS3 Bare Aluminium Cylinder Heads 260cc/70cc - Chevy Holden HSV Holden 6 Secondary Resistance: 8"High Quality Performance At An Affordable Low Price" Suits GM Gen IV LS3 Brilliantly engineered and manufactured Made from AC4B Aluminium As cast runners and chambers Sold as a pair Specifications: Combustion chamber: 70cc Intake runner volume: 260cc Exhaust runner volume: 100cc Intake valve diameter: 2. 145 Exhaust valve diameter: 1. 600 Valve stem diameter: 0. 316