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Street Legal Performer Cylinder Heads
- Big Block Chevy 396-502ci
- Valve Springs for Hydraulic Flat Tappet
- Port Volume: 290cc/110cc
- Valve Size: 2.19"/1.88"
- 110cc Combustion Chambers
- Max Lift: .700"
- Assembled, Sold Individually
Performer 454-O cylinder heads have the same outstanding features as the Performer RPM heads but with an exhaust crossover passage for a 50-state emissions legal status (E.O. #D-215-16). Match these powerful heads with our Performer manifold, Performer-Plus cam and an Edelbrock square-bore or spread-bore carburetor for a Power Package.Tech Tip: To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs such as the RC12YC (P/N 192-49776). They are 0.230' shorter than a conventional spark plug and have a 5/8' hex for easier access.
Valve Lift Intake Exhaust .100' 74 71 .200' 143 128 .300' 207 153 .400' 250 178 .500' 284 200 .600' 309 218 .700' N/A N/A Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28' H2O
Part TypeCylinder Head
BrandEDELBROCK
Package Height8.7
Package Width11.1
Package Length26.0
Weight44.0 PG
Retainers IncludedYes
Guideplates IncludedYes
Oiling StyleThrough pushrod
Valve Seats MachinedYes
Heat CrossoverYes
Number Of Springs Per ValveDual
Damper Spring IncludedNo
Cylinder Head TypeOval Port- Large
Valve Stem Seals IncludedYes
Intake Valve Diameter2.19 in (55.626 mm)
Valve Guide MaterialManganese bronze
Outside Diameter Of Outer Spring1.55 in (39.4 mm)
Steam Holes DrilledNo
Rocker Arm Studs IncludedYes
Retainer MaterialSteel
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.88 in (47.752 mm)
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Rocker Arm Nut Thread Size (In.)7/16"-20
Emission50 State Legal
Exhaust Valves IncludedYes
Locks IncludedYes
Engine Make/SizeChevy Big Block (396-502)
Lock Style7 degree
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Intake Valve Angle26
Maximum Valve Lift0.7 in (17.78 mm)
Valve Seat MaterialDuctile iron
FinishCast Aluminum
Valve Springs IncludedYes
UsageStreet/Performance
Valve Seat Machine Style3-angle
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedYes
Combustion Chamber StyleSemi-open
QuantitySold individually
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)110
Exhaust Port LocationStandard
TypeComplete
Combustion Chamber Volume (Cc)110
Machined For O-RingNo
PreparationBolt On (Not Required)
Cylinder Head StyleAssembled
Part FitmentSemi Universal
Valve Cover Mounting StylePerimeter bolt
Valve Stem Seal StylePositive stop
Intake Runner Volume (Cc)290
Cnc-Machined Exhaust RunnerNo
Vendor Part Number60479
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
