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Pro 2 Big Block Head
- Big Block Chevy Pro 2 Head
- Assembled
- Dual Valve Springs: 1.625''
- Max Lift: .850''
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.
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Part TypeCylinder Head
BrandDART
Package Height7.3
Package Width9.5
Package Length24.3
Weight46.45 PG
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Rocker Arm Nut Thread Size (In.)7/16"-20
Exhaust Valves IncludedYes
Locks IncludedYes
Retainers IncludedYes
Lock Style10 degree
Guideplates IncludedYes
Rocker Arms IncludedNo
Oiling StyleThrough pushrod
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Valve Seats MachinedYes
Intake Valve Angle24
Maximum Valve Lift0.85 in (21.59 mm)
Valve Seat MaterialDuctile iron
Heat CrossoverNo
Number Of Springs Per ValveDual
Valve Springs IncludedYes
Valve Seat Machine Style4-angle intake/3-angle exhaust
Damper Spring IncludedNo
Valve Guides IncludedYes
Cnc-Machined Intake RunnerYes
Intake Valves IncludedYes
Combustion Chamber StyleHeart
QuantitySold individually
Valve Stem Seals IncludedYes
Intake Valve Diameter2.3 in (58.42 mm)
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)138
Exhaust Port LocationRaised
Valve Guide MaterialManganese bronze
Outside Diameter Of Outer Spring1.625 in (41.3 mm)
Combustion Chamber Volume (Cc)121
Machined For O-RingNo
Exhaust Valve Angle15
Steam Holes DrilledNo
Rocker Arm Studs IncludedYes
Cylinder Head StyleAssembled
Part FitmentSemi Universal
Valve Cover Mounting StylePerimeter bolt
Valve Stem Seal StylePositive stop
Retainer MaterialTitanium
Intake Runner Volume (Cc)380
Cnc-Machined Exhaust RunnerYes
Cnc-Machined Combustion ChamberYes
Exhaust Valve Diameter1.88 in (47.752 mm)
Vendor Part Number19674136
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
