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![Small Block Chevy CNC-Ported Aluminum Cylinder Head for use w/Hydraulic Roller Cam [220 cc Intake Ports, Angled Spark Plug]](https://www.jegs.com/images/mini_750/500/555/555-514300.jpg)
Vehicle Info NeededJEGSPART NUMBER: 555-514300
Small Block Chevy CNC-Ported Aluminum Cylinder Head for use w/Hydraulic Roller Cam [220 cc Intake Ports, Angled Spark Plug]
$1,00199$1102.99You Save$101.00
3 left in stock
Ships on Oct 19, 2026
Lowest Price GuaranteeSmall Block 220 cc
Aluminum Cylinder HeadSmall Block Chevy 100% CNC-Ported 220 cc Intake Ports 72 cc Chambers 2.055 in. Int./1.600 in. Exh. Valves Angled Plug Springs for Hydraulic Roller Cam .650 in. Max. Lift Sold Individually
JEGS 555-514300 Small Block Chevy Aluminum Cylinder Head Features:
- Combustion Chamber Volume: 72 cc
- Intake Runner Volume: 220 cc
- Exhaust Runner Volume: 89 cc
- Cylinder Head Style: Assembled
- Cylinder Head Material: Cast aluminum
- Camshaft Style: Hydraulic roller
- Intake Port Shape: Rectangular
- Intake Port Dimensions: 2.200 in. x 1.350 in.
- Intake Valve Diameter: 2.055 in.
- CNC-Machined Combustion Chamber: Yes
- CNC-Machined Intake Runner: Yes
- CNC-Machined Exhaust Runner: Yes
- Combustion Chamber Style: Heart
- Intake Port Location: Standard
- Exhaust Port Dimensions: 1.590 in. x 1.545 in.
- Exhaust Port Location: Standard
- Spark Plug Style: Angle
- Spark Plug Thread Size: M14 x 0.750 in.
- Spark Plug Seat Style: Gasket
- Intake Valves Included: Yes
- Exhaust Valves Included: Yes
- Exhaust Valve Diameter: 1.600 in.
- Valve Springs Included: Yes
- Installed Height: 1.875 in.
- Seat Pressure at Installed Height: 170 lbs.
- Open Height: 1.300 in.
- Open Pressure: 400 lbs.
- Valve Spring Coil Bind Height: 1.187 in.
- Maximum Valve Lift: 0.650 in.
- Outside Diameter of Outer Spring: 1.460 in.
- Number of Springs Per Valve: Dual
- Retainers Included: Yes
- Retainer Material: Chromoly steel
- Locks Included: Yes
- Lock Style: 10 degree
- Valve Stem Seals Included: Yes
- Valve Stem Seal Style: Positive stop
- Rocker Arms Included: No
- Rocker Arm Nuts Included: No
- Guideplates Included: Yes
- Guideplate Pushrod Size: 5/16 in.
- Valve Cover Mounting Style: Center and perimeter bolt
- Accessory Bolt Holes Drilled: Yes
- Intake Valve Angle: 23-degree
- Exhaust Valve Angle: 23-degree
- Valve Guides Included: Yes
- Valve Guide Material: Bronze
- Valve Seats Machined: Yes
- Valve Seat Machine Style: 5-angle
- Valve Seat Material: Ductile iron
- Cylinder Head Color: Natural
- Machined for O-Ring: No
Emissions 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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Chevy Performance Right Out of the Box!
JEGS Chevy Aluminum Cylinder Heads bring racing technology to your high-performance street engine! We use the most up-to-date technology to design our intake & exhaust runners and combustion chambers for maximum performance. Our choices of CNC-ported, intake runner volumes, combustion chamber sizes, spark plug styles, and valve springs ensure that we have a cylinder head to suit your needs. Each JEGS cylinder head assembly has premium parts and hardware.
Part TypeCylinder Head
Product LineJEGS Chevy Small, Big Block Aluminum Cylinder Heads
BrandJEGS
Package Height6.8
Package Width10.3
Package Length21.8
Weight28.29 PG
Exhaust Valve Diameter (In.)1.600 in.
Retainers IncludedYes
Intake Port ShapeRectangular
Guideplates IncludedYes
Oiling StyleThrough pushrod
Valve Seats MachinedYes
Maximum Valve Lift (In.)0.650 in.
Intake Valve Diameter (In.)2.055 in.
Intake Valve MaterialStainless Steel
Camshaft StyleHydraulic roller
Number Of Springs Per ValveDual
Spark Plug StyleAngle
Valve Stem Seals IncludedYes
Intake Valve Diameter2.055 in.
Valve Guide MaterialManganese bronze intake/Phosphorous bronze exhaust
Retainer MaterialChromoly steel
Cnc-Machined Combustion ChamberYes
Exhaust Valve Diameter1.600 in.
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Exhaust Valves IncludedYes
Locks IncludedYes
Engine Make/SizeChevy Small Block
Lock Style10 degree
Rocker Arms IncludedNo
Cylinder Head FinishNatural
Intake Valve Angle23
Valve Seat MaterialDuctile iron
Intake Port Dimensions2.200 in. x 1.350 in.
Valve Springs IncludedYes
Valve Seat Machine Style5-angle
Valve Guides IncludedYes
Cnc-Machined Intake RunnerYes
Intake Valves IncludedYes
Combustion Chamber StyleHeart
QuantitySold individually
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)89
Exhaust Port LocationStandard
Combustion Chamber Volume (Cc)72
Machined For O-RingNo
Exhaust Valve Angle23
Cylinder Head StyleAssembled
Valve Stem Diameter0.3415 in.
Exhaust Port Dimensions1.590 in. x 1.545 in.
Part FitmentSemi Universal
Valve Cover Mounting StyleCenter and perimeter bolt
Valve Stem Seal StylePositive stop
Intake Runner Volume (Cc)220
Cnc-Machined Exhaust RunnerYes
Package Qty1
Package TypeEA
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