Holden Red 6 9-port Race ported cylinder head **SOLD** others available POA
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Full reco'd Holden 6 head 39cc chambers makes 11.6:1 comp on f/top 186 or 12.5:1 on 202 f/top. BIG Custom 1.78 Intake 1.5 Exhaust Valves, Fully ported throughout, crack and pressure tested, multi-angle valve seats, double valve springs, moly retainers and locks, positive Flouro-elastomer valve stem seals, Pinned 3/8 rocker studs.
