Performer RPM E-Tec cylinder heads feature an LT1-style raised runner intake port design for increased air-flow and ultimate performance. Available in 170cc or 200cc runner size, they both feature high-quality stainless steel intake and exhaust valves, 64cc combustion chambers and high flow intake and exhaust ports. The high-velocity Intake and exhaust runners are hand blended in the bowl area and the intake entries and exhaust exits are cnc profiled for increased air-flow. A unique combustion chamber design positions the spark plug closer to the center of the cylinder, promoting uniform atomization of the air/fuel mixture for more efficient combustion resulting in more power. These heads include adjustable rocker stud and guide plate set-up for use with adjustable rockers or washers to properly position the stud height to accomodate factory style self-aligning rocker arms. The casting is manufactured of virgin 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. RPM E-Tec heads are dual-drilled and for to accept 1987-95 centerbolt and/or 1986 & prior flange mount valve covers. RPM E-Tec cylinder heads are available fully assembled and ready to bolt on or bare for use with your own valve train components. Made in USA.

Item Code	EDE-60959
Vendor Name	Edelbrock
Product Type	Cylinder Head
Product Model	E-TEC
Application	302, 327, 350 & 400 cid S/B Chevys with "Vortec-style" manifolds
Engine Family	CHEVROLET - Small Block
Material	Aluminum
Finish	Natural
Cylinder Head Style	Bare
Combustion Chamber Volume (cc)	64cc
Intake Runner Volume (cc)	170cc
Exhaust Runner Volume (cc)	70cc
CNC Machined Combustion Chamber	No
CNC Machined Intake Runner	No
CNC Machined Exhaust Runner	No
Combustion Chamber Style	Standard
Intake Port Shape	Rectangular
Intake Port Location	Standard
Exhaust Port Shape	Square
Exhaust Port Location	Raised
Valves Included	No
Intake Valve Diameter (in)	1.940"
Exhaust Valve Diameter (in)	1.550"
Valve Springs Included	No
Maximum Valve Lift (in)	0.575"
Outside Diameter of Outer Spring (in)	1.460"
Damper Spring Included	No
Retainers Included	No
Valve Locks Included	No
Valve Stem Seals Included	No
Rocker Arm Studs Included	No
Rocker Arm Nuts Included	No
Rocker Arms Included	No
Guideplates Included	No
Accessory Holes Drilled	Yes
Valve Guides Included	Yes
Quantity	Sold individually.