This head package is absolutely the best combo money can buy.

Full competition portjob the best flow curve in existance, mid lift flow 10 cfm up on any cnc portjob.

intake flow 335 cfm -400 lift @28''   exhaust percentage 76%

1mm single piece stainless race valves ,custom made inconnell, single nissan round collett groove.

All inserts replaced hi nickel thicker outside diameter and depth.

Competition cnc machined valvejob/ bowl seats within 1 thou heights on Newen cnc head centre

Chamber polish and modified,head refaced,new valve seals.

Supertech beehive springs and titanium retainers,machined valve locks.

Custom stage 1 ,2 or 3 camshafts available $1200 pair extra charge we can supply you the complete head and cam package to suit youre application and boost requirements in a proven combo that WILL  work.

Ideal spring pressure up to 40 lb boost suiting factory cams and our custom stage 1,2 and 3 cams.

Note ---can be drilled and top hats fitted for 9/16 head studs at extra charge if required.

I will need youre old head to build from or can do exchange on arrangement.