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Edelbrock 51259 - Edelbrock Performer RPM Xtreme Small Block Ford Cylinder Heads

  • Cylinder Head, RPM Xtreme, Aluminum, Assembled, 59cc Chamber, 185cc Intake Runner, Ford, 351W, Each
  • Application Specific
  • Estimated Ship Date: Today
 
BrandEdelbrock
Manufacturer's Part Number51259
Part TypeCylinder Heads
Product LineEdelbrock Performer RPM Xtreme Small Block Ford Cylinder Heads
Summit Racing Part NumberEDL-51259
UPC085347512591
 
Cylinder Head StyleAssembled
Cylinder Head MaterialAluminum
Cylinder Head FinishNatural
Combustion Chamber Volume (cc)59
CNC-Machined Combustion ChamberYes
Intake Runner Volume (cc)185cc
Exhaust Runner Volume (cc)75cc
CNC-Machined Intake RunnerNo
CNC-Machined Exhaust RunnerNo
Intake Port ShapeRectangular
Intake Port LocationStandard
Exhaust Port ShapeSquare
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 Size7/16-20 in.
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Guideplates IncludedYes
Guideplate Pushrod Size5/16 in.
Valve Cover Mounting StylePerimeter bolt
Accessory Bolt Holes DrilledYes
Intake Valve Angle18
Exhaust Valve Angle18
Valve Guides IncludedYes
Valve Guide MaterialManganese 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
 

Designed for 351 Windsor and larger high-performance street and racing applications, Edelbrock's Performer RPM Xtreme cylinder heads give you the best combination of as-cast port design and CNC porting technology. This proven combination provides you with a powerful cylinder head at a lower cost than a typical fully CNC'd head. They feature an 18 degree valve angle, CNC-machined 59cc combustion chambers, 185cc intake ports, lightweight 2.02 in. intake and 1.570 in. valves with 8mm stems, and beehive valve springs.

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