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-11X Series Cylinder Heads67cc Combustion Chambers Standard Exhaust Ports
- -11X Series Cylinder Heads
- Standard Exhaust Port
- 225cc Intake Ports
- 67cc Combustion Chambers
- 2.080'' Intake / 1.600'' Exhaust Valves
- 1.550'' Dia. Springs - 240# Seat Pressure
- Titanium Retainers
- Angle Plug
- Assembled, 2/pkg.
Cylinder Head Specifications - Intake Port Volume: 225cc
- Combustion Chamber Volume: 67cc
- Valves: 2.080' dia. x 5.065' o.a.l. Intake / 1.600' dia. x 5.065' o.a.l. Exhaust ( 11/32' Stem Diameter )
- Valve Springs: 1.550' Diameter - Open Pressure: 550 lbs.; Closed Pressure: 240 lbs.; Installed Height: 1.950'; Max Lift: .700'
- Spring Retainers: 1.550' 10° Titanium
- Rocker Studs: 7/16'
- Guide Plates: 5/16'
- Valve Seals: 11/32'
- Spark Plug Configuration: AngledFacts and Related Components
- Torque Heads: 70 ft-lb.
- Torque Rocker Studs: 40-45 ft-lb.
- Intake Gasket: Fel-Pro p/n 375-1206, Cometic p/n 245-C5414
- Head Gasket: Fel-Pro p/n 375-1003 (350ci) / 375-1004 (400ci) or Cometic p/n 245-C5399 (350ci) / 245-C5403 (400ci)
- Exhaust Gasket: Fel-Pro p/n 375-1406, Cometic p/n 245-C5415 (Standard Port)
- Head Bolts: ARP p/n 070-134-3601 or Manley p/n 660-42313
- Head Bolt Washers: MANLEY p/n 660-42102
- Head Studs: ARP p/n 070-234-4301 (12-point)
- Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
- Valve Angle: 23°
- Angle Milling: .0078' per cc
- Flat Milling: .0060' per cc
- Pushrod Slots: 40/60
- Stud Girdle: 40/60 Brodix p/n 158-BR6440
- Rocker Arms: Standard, T&D Economy 40/60 2256, Jesel 40/60 Shaft System KPS 01302
- Lifters: Standard
- Exhaust Pattern: Standard or Spread Port
- Valve Centerline: 40/60
- Spring Pockets: May not be cut any larger or deeper than 1.550'
- Accessory Bolt Holes are Drilled
- Recommended Intake Manifold: Brodix BM 1000(p/n 158-BM1000) / HV 1000 (p/n 158-HV1000) / HV 1002 (p/n 158-HV1002) / SE 100 (p/n 158-SE100) / SE 102 (p/n 158-SE102)
Available Standard or Spread Exhaust Ports
23° Intake & Exhaust Valve Angles
The Brodix Small Block Chevy -11X Series Aluminum Cylinder Heads are available with a standard or spread exhaust port pattern. This 23° head flows 285 cfm @ .700'' lift straight out-of-the-box with as-cast runners and chambers. The BP -11X Series heads feature CNC ported combustion chambers that flow up to 316 cfm @ .700'' lift. Brodix recommends this head be installed on a 400ci+ engine. The -11X requires a special stud girdle and longer pushrods. Piston valve notches must be checked for clearance. A valve length of .150'' longer than stock is required.
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Every casting is poured from A-356 virgin aluminum and tested before Brodix utilizes their in-house processes such as finish machining and heat treating to assure that you receive the best products for your hard-earned money. The industry standard has been taken to the next level with modernized CNC porting. Other features include a thick deck surface that is compatible with nitrous, drilled and tapped holes on the ends for standard drive accessories, phosphorous bronze valve guides and hardened valve seats installed for unleaded fuel. Sold in Pairs. ! | |||
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Part TypeCylinder Head
Product LineBrodix Small Block Chevy -11X Series Aluminum Cylinder Head
BrandBRODIX
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
Maximum Valve Lift0.7 in (17.78 mm)
Heat CrossoverNo
Valve Springs IncludedYes
Spark Plug StyleAngled
Damper Spring IncludedYes
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedYes
QuantitySold as a pair
Valve Stem Seals IncludedYes
Intake Valve Diameter2.08 in (52.832 mm)
Accessory Bolt Holes DrilledYes
Exhaust Port LocationStandard
Valve Guide MaterialPhosphorous bronze
Outside Diameter Of Outer Spring1.55 in (39.4 mm)
Combustion Chamber Volume (Cc)67
Machined For O-RingNo
Steam Holes DrilledNo
Rocker Arm Studs IncludedYes
Cylinder Head StyleAssembled
Part FitmentSemi Universal
Valve Cover Mounting StylePerimeter bolt
Retainer MaterialTitanium
Intake Runner Volume (Cc)225
Cnc-Machined Exhaust RunnerNo
Cnc-Machined Combustion ChamberYes
Exhaust Valve Diameter1.6 in (40.64 mm)
Vendor Part Number1111010
Package Qty1
Package TypeEA
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