HOLDEN V8 304 308 5.0L VN EFI Cylinder Head Assembled for Hydraulic Roller (single head)

Assembly Notes:     EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC ROLLER CAMSHAFT APPLICATIONS; Performer RPM head #61385 has port notched for EFI applications; Capable of 500+ horsepower on pump gas; Intended as a direct replacement for factory heads and is configured as an easy bolt-on part for 1989-98 VN Commodore engines and as an upgrade to all earlier Holden production engines.; Features an extra thick 11/16" deck

Series                    Performer RPM

Grade Type            Performance

Quantity                Sold Individually

Guide Plate Material      Hardened Steel

Camshaft Type       Hydraulic Roller

Horsepower          350-450 HP

Warranty             12 Months

Seat Angle          Exhaust 45 deg/Intake 45 deg

CNC Ported          No

Combustion Chamber Volume   62 cc

Deck Height                     8.875 in

Deck Thickness                0.6875 in

Intake Valve Diameter      2.02 in

Exhaust Valve Diameter    1.60 in

Guide Plates Included       Yes

Intake Runner Volume      195 cc

Material                           Aluminum

Push Rod Diameter         (Suggested) 0.375 in

Rocker Stud Diameter      0.4375 in

Valve Angle                     5 deg

Valve Spring Diameter      1.30 in

Valve Spring Maximum Lift   0.600 in

Valve Stem Diameter         0.3125 in