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Vehicle Info NeededEDELBROCKPART NUMBER: 350-60547
NHRA Performer RPM454-R Rectangle Port Aluminum Cylinder Head for Big Block Chevy
$85495
1 left in stock
Ships on Sep 14, 2026
Lowest Price GuaranteeChevrolet
- Legal for NHRA Stock/Super Stock
- Big Block Chevy 396-502ci
- Rectangle Port Head
- Port Volume: 315cc/110cc
- 118cc Combustion Chambers
- Bare Head, Sold Individually
Chamber Volume: 118cc
Deck Height: 9/16"
Intake Volume: 290cc
Exhaust Port Volume: 110cc
Valve Guide Included: YesEmissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
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Part TypeCylinder Head
BrandEDELBROCK
Package Height8.7
Package Width11.3
Package Length25.9
Weight36.2 PG
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
EmissionN/A
Exhaust Valves IncludedNo
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-502)
Retainers IncludedNo
Guideplates IncludedNo
Rocker Arms IncludedNo
Oiling StyleThrough pushrod
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Valve Seats MachinedNo
Intake Valve Angle26
Valve Seat MaterialDuctile iron
Heat CrossoverNo
FinishCast Aluminum
Valve Springs IncludedNo
UsageRacing
Damper Spring IncludedNo
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedNo
Combustion Chamber StyleSemi-open
QuantitySold individually
Cylinder Head TypeRectangular Port
Valve Stem Seals IncludedNo
Intake Valve Diameter2.19 in (55.626 mm)
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)110
Exhaust Port LocationStandard
Valve Guide MaterialManganese bronze
TypeBare
Combustion Chamber Volume (Cc)118
Machined For O-RingNo
PreparationRequires Professional Preparation (Bare)
Steam Holes DrilledNo
Rocker Arm Studs IncludedNo
Cylinder Head StyleBare
Part FitmentSemi Universal
Valve Cover Mounting StylePerimeter bolt
Intake Runner Volume (Cc)315cc/300
Cnc-Machined Exhaust RunnerNo
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.88 in (47.752 mm)
Vendor Part Number60547
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
