With the port profile machined to suit ported heads these are a simple upgrade to maximise airflow in all conditions. Available in two lengths, 79mm and 67mm, the shorter of which is required to fit a Process West billet plenum to a GC8. The upper flange surface is O-ringed for a perfect seal to either a stock or aftermarket plenum. Fuel injector ports are machined in such a way that either 11mm or 13mm diameter top-feed injectors will seat without needing any adaptors, just use the supplied Viton O-rings as required. Fuel rail mounting points are the same as stock, so it is possible to use this with other aftermarket fuel rails.
With the port profile machined to suit ported heads these are a simple upgrade to maximise airflow in all conditions. Available in two lengths, 79mm and 67mm, the shorter of which is required to fit a Process West billet plenum to a GC8. The upper flange surface is O-ringed for a perfect seal to either a stock or aftermarket plenum. Fuel injector ports are machined in such a way that either 11mm or 13mm diameter top-feed injectors will seat without needing any adaptors, just use the supplied Viton O-rings as required. Fuel rail mounting points are the same as stock, so it is possible to use this with other aftermarket fuel rails.
Available in two lengths: 79mm and 67mm
Suites either 11mm or 13mm Diameter top-feed Injectors
Fuel Rail mounting points are the same as stock
