Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
![Pro1 LS 12° CNC Ported Rectangle Port Aluminum Cylinder Head [Assembled]](https://www.jegs.com/images/mini_750/300/301/301-11061182.jpg)
Vehicle Info NeededDARTPART NUMBER: 301-11061182
Pro1 LS 12° CNC Ported Rectangle Port Aluminum Cylinder Head [Assembled]
$2,89336
Ships on 01/15/2027
Lowest Price Guarantee285cc Intake Runner
Pro1 CNC Rectangle Port Assembled Cylinder HeadIncludes Rocker Bar Valve Springs: 1.290 in. O.D. Beehive for .625 in. Lift Hydraulic Roller Cam Intake Runner: 285cc Valves: 2.200 in./1.625 in. Combustion Chamber: 66cc Valve Angle: 12°
Dart 11061182 Pro1 CNC Ported 285cc Fully Assembled Aluminum Cylinder Head:
- Recommended for GM Gen III LS7 compatible V8 engines with 4.125 in. and larger bores
- 1.290 in. diameter beehive valve springs for use with a hydraulic roller cam w/.625 in. maximum lift
- Includes Dart rocker bar for OEM style rocker arms
- CNC ported 285 cc intake ports, 104cc exhaust ports, and 66cc combustion chambers provide superior flow
- 2.200 in. intake and 1.625 in. exhaust valves
- (6) Bolt per cylinder
- Cast aluminum alloy
- Sold individually
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
Part TypeCylinder Head
BrandDART
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Exhaust Valves IncludedYes
Locks IncludedYes
Engine Make/SizeGM LS7
Retainers IncludedYes
Intake Port ShapeRectangle
Guideplates IncludedNo
Cylinder Head FinishNatural
Valve Seats MachinedYes
Intake Valve Angle12
Maximum Valve Lift0.625 in (15.875 mm)
Valve Seat MaterialDuctile iron
FinishNatural
Intake Port Dimensions2.430 in. H x 1.375 in. W
Valve Springs IncludedYes
UsageCompetition
Valve Seat Machine StyleMulti-Angle
Valve Guides IncludedYes
Cnc-Machined Intake RunnerYes
Intake Valves IncludedYes
Combustion Chamber StyleHeart
QuantitySold individually
Cylinder Head TypeLS7
Valve Stem Seals IncludedYes
Intake Valve Diameter2.2 in (55.88 mm)
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)104
Exhaust Port LocationStandard
Valve Guide MaterialManganese bronze
Outside Diameter Of Outer Spring1.29 in (32.8 mm)
Combustion Chamber Volume (Cc)66
Machined For O-RingNo
PreparationBolt On (Not Required)
Exhaust Valve Angle12
Rocker Arm Studs IncludedNo
Cylinder Head StyleAssembled
Valve Stem Diameter8 mm
Exhaust Port Dimensions1.800 in. H x 1.600 in. W
Part FitmentSemi Universal
Valve Cover Mounting StyleCenterbolt
Intake Runner Volume (Cc)285
Cnc-Machined Exhaust RunnerYes
Cnc-Machined Combustion ChamberYes
Exhaust Valve Diameter1.625 in (41.275 mm)
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
EDELBROCK
Super Victor LS7 EFI Intake Manifold Chevy LS with LS7 Cylinder Heads
Part Number : 350-28905
$81995
EDELBROCK
Super Victor LS7 EFI Intake Manifold Chevy LS with LS7 Cylinder Heads
Part Number : 350-28875
$62076$775.95
You Save$155.19
![134-3610 Professional Series Head Bolt Kit Small Block Chevy Gen III/LS Series [2004 & Later]](https://www.jegs.com/images/mini_200/0/070/070-134-3610.jpg)
ARP
134-3610 Professional Series Head Bolt Kit Small Block Chevy Gen III/LS Series [2004 & Later]
Part Number : 070-134-3610
$11999
ARP
234-4317 Head Studs with 12-Point Nuts 2004-Up Chevy LS1, LS6, 5.7/6.0L
Part Number : 070-234-4317
$30999
Some parts are not legal for use in California or other states with similar laws / regulations
