Precision Race Components All New Cylinder Head Castings Completed With 227cc Runners For stock cubic inch LS1/LS2 applications.
227cc Fully CNC Ported Intake Runners
84cc Fully CNC Ported Exhaust Runners
Small Bore Chambers For Increased Horsepower & Torque+
PRC Platinum Spring Kit Rated To .650" Lift
62cc or 68cc CNC Machined Chambers (Please notate choice in order notes)
2.06" Intake / 1.60" Stainless Valves
Factory Rocker Friendly!!*
The all new 227cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance. Now is your chance to own the same cylinder head that currently holds the fastest stock bottom end heads / cam record! The new 227cc port has been flow bench tested to flow well over 325cfm & can support everything from smaller camshaft street engines all the way to all our race engines. Engine dyno testing has shown these cylinder heads support over 650 flywheel horsepower in 408cid applications.
4.00" Flow Plate - No Exhaust Pipe
*All aftermarket cylinder heads feature bronze guides. Stock rocker arms will cause increased guide wear in applications over .600" lift. Roller rockers can help to reduce this wear.