Designed for 1997 & later GEN 3 & 4 LS1/LS2 small block Chevy engines including 4.8L, 5.3L, 5.7L and 6.0L. RPM heads are CNC ported in critical areas for improved airflow and peak performance. Combustion chamber features include high-quality stainless steel 2.02" intake and 1.57" exhaust valves that feed the high flow 212cc intake and 76cc exhaust ports. The high-velocity Intake and exhaust runners are completely cnc ported to deliver optimal airflow and velocity at all lift values for a broad range of torque and impressive peak horsepower. Combustion chambers are fully cnc machined for absolute consistency and combustion. The casting is manufactured of A356 aluminum and heat treated to T6 spec for superior quality. An extra-thick 5/8" deck and Heli-coil threaded inserts offer improved durability. High-quality conical beehive springs are secured with steel retainers and valve locks for performance up to .600" valve lift. These LS series cylinder heads are equipped to accept factory style non-adjustable rockers and centerbolt or parameter mount valve covers. Match with any one of Edelbrock's LS series intake manifolds and camshafts for a dyno-proven performance combination. Available fully assembled and ready to bolt on or bare for use with your own valve train components. Made in USA.


Cylinder Head Specifications:

Combustion chamber volume 65cc
Intake runner volume 212cc
Exhaust runner volume 76cc
Intake valve diameter 2.02"
Exhaust valve diameter 1.57"
Valve stem diameter 8mm
Valve guides Manganese bronze
Deck thickness 5/8"
Valve spring diameter 1.55" / 1.30"
Valve spring maximum lift .600"
Rocker stud N/A
Guideplate N/A
Pushrod diameter 5/16"
Valve angle 15°
Exhaust port location Stock
Spark plug fitment 14mm x .750 reach, tapered seat (OE style)
Made In USA
Carb EO# D-215-70


Technical Notes: Sold individually. Bare heads will have valve guides and seats installed, but will require final sizing and valve job to match the valves you will be using. Factory rocker bolts will prtrude into intake runners. For unrestricted flow use Edelbrock shorter than stock rocker bolts, #8597.