Package includes:
Full CNC poring of Intake,exhaust and Combustion chamber
to 225 cc intake runner volume, competiton multi angle valve job,
installation of larger intake and exhaust seats,with hand finishing.
Built on brand new 5.3 castings (included in price)
Ferrea 2.055 intake valves, Rev 1.57 exhaust valves
63cc Combustion Chamber (can be milled smaller)
Asssembled with dual gold .650" lift hydraulic roller springs,
titanium retainers,and gm seals.
Flow sheet with intake and exhaust included.
This head is designed for use on 3.900" bore motors 
and flows great. It WILL require flycutting of pistons
for valve reliefs with camshafts over 226*@.050".
Will make best power with a lsx 90 intake and 1 3/4" or 
larger headers. We have customer's who have made well over
450RWHP using this head on stock 5.7's!