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Edelbrock 61939 - Edelbrock Performer RPM Xtreme CNC LT4 Cylinder Heads

  • Cylinder Head, RPM Xtreme CNC LT4, Aluminum, Assembled, 54cc Chamber, 195cc Intake, Chevy, 5.7L, Each
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BrandEdelbrock
Manufacturer's Part Number61939
Part TypeCylinder Heads
Product LineEdelbrock Performer RPM Xtreme CNC LT4 Cylinder Heads
Summit Racing Part NumberEDL-61939
UPC085347619399
 
Cylinder Head StyleAssembled
Cylinder Head MaterialAluminum
Cylinder Head FinishNatural
Combustion Chamber Volume (cc)54
CNC-Machined Combustion ChamberYes
Intake Runner Volume (cc)195cc
Exhaust Runner Volume (cc)75cc
CNC-Machined Intake RunnerNo
CNC-Machined Exhaust RunnerNo
Intake Port ShapeRectangular
Intake Port LocationStandard
Exhaust Port ShapeD-port
Exhaust Port LocationStandard
Spark Plug StyleAngle
Intake Valves IncludedYes
Intake Valve Diameter (in)2.020 in.
Exhaust Valves IncludedYes
Exhaust Valve Diameter (in)1.570 in.
Valve Springs IncludedYes
Maximum Valve Lift (in)0.600 in.
Outside Diameter of Outer Spring (in)1.290 in.
Damper Spring IncludedYes
Number of Springs Per ValveSingle
Retainers IncludedYes
Retainer MaterialSteel
Locks IncludedYes
Lock Style7 degree
Valve Stem Seals IncludedYes
Valve Stem Seal StylePC seal
Rocker Arm Studs IncludedYes
Rocker Arm Nut Thread Size3/8-24 in.
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Guideplates IncludedNo
Valve Cover Mounting StyleCenterbolt
Accessory Bolt Holes DrilledYes
Intake Valve Angle23
Exhaust Valve Angle23
Valve Guides IncludedYes
Valve Guide MaterialPhosphorous bronze
Valve Seats MachinedYes
Valve Seat Machine Style3-angle
Valve Seat MaterialDuctile iron
Steam Holes DrilledNo
Oiling StyleThrough pushrod
Machined for O-RingNo
Heat CrossoverNo
QuantitySold individually.
NotesThe intake runners feature a CNC profiled entry and the exhaust runners feature a CNC profiled exit. They are not fully CNC ported.
CalculatorCompression Calculator
 

These Edelbrock Performer RPM Xtreme CNC LT4 cylinder heads are designed for 1992-97 LT1 engines. They work with stock or aftermarket self-aligning roller rocker arms. Fully CNC-machined combustion chambers and CNC-blended intake and exhaust ports provide huge increases of both power and torque over the stock cylinder heads. These Edelbrock Performer RPM Xtreme CNC LT4 cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability, plus hardened ductile iron valve seats, manganese bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. They offer improved power throughout the rpm range for greater throttle response and top-end horsepower. Give your a engine a shot in the arm with a set of these Edelbrock Performer RPM Xtreme CNC LT4 cylinder heads.

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