Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededBRODIXPART NUMBER: 158-2181003
Big Duke PB 1802 Series Cylinder Head 456cc Rectangle Intake Ports
$2,90553
Ships on 09/22/2026
Lowest Price GuaranteePB 1802 Series Cylinder Heads456cc Intake Port Volume 1.645'' Diameter Valve Springs - 945# Open, 330# Closed Spring Pressure
- Big Duke PB 1802 Series Cylinder Head
- 456cc Rectangle Intake Ports
- 91cc Combustion Chambers
- 2.400'' Intake / 1.900'' Exhaust Valves
- 1.645'' Dia. Springs - 330# Seat Pressure
- Titanium Retainers
- Assembled, 1/pkg.
Cylinder Head Specifications - Intake Port Volume: 456cc - Rectangle Port
- Combustion Chamber Volume: 91cc
- Valves: 2.400' dia. x 6.600' o.a.l. Stainless Steel Intake (45° Valve Seat Angle) / 1.900' dia. x 6.450' o.a.l. Stainless Steel Exhaust (45° Valve Seat Angle) ( 11/32' Stem Diameter )
- Valve Springs: 1.645' Diameter - Open Pressure: 945 lbs.; Closed Pressure: 330 lbs.; Installed Height: 2.100'; Max Lift: .875'
- Spring Retainers: 1.645' 10° Titanium
- Rocker Studs: Shaft System Required
- Guide Plates: N/A
- 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: Cometic 245-C5419, Fel-Pro 375-1298
- Head Gasket: 4.540' Bore - Fel-Pro p/n 375-1017, Cometic p/n 245-C5433; 4.600' Bore - Fel-Pro p/n 375-1057, Cometic p/n 245-C5434
- Exhaust Gasket: Fel-Pro p/n 375-1412 or Cometic p/n 245-C5418
- Head Studs: ARP p/n 070-235-4712 (12-point)
- Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
- Valve Angle: 18° and 4° Intake, 9° and 4° Exhaust
- Angle Milling: N/A
- Flat Milling: .0055' per cc
- Pushrod Slots: Standard
- Pushrods: Check pushrod clearance with head installed on the engine block before final assembly
- Rocker Arms: Shaft Mounted System - T&D 3036, Jesel KPS 22797
- Lifters: Standard
- Pistons: 18° x 9° Valve Piston
- Spring Pockets: May not be cut any larger or deeper than 1.750'
- Accessory Bolt Holes are Drilled
- Recommended Intake Manifold: Brodix PM 1800 (p/n 158-PM1800) / PM 1810 (p/n 158-PM1810)
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
BrandBRODIX
Package Height8.7
Package Width11.2
Package Length25.9
Weight44.6 PG
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationRaised
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 Angle18
Maximum Valve Lift0.8 in (20.32 mm)
Valve Seat MaterialDuctile iron
Heat CrossoverNo
Number Of Springs Per ValveTriple
Valve Springs IncludedYes
Valve Seat Machine Style3-angle
Damper Spring IncludedYes
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedYes
QuantitySold individually
Valve Stem Seals IncludedYes
Intake Valve Diameter2.4 in (60.96 mm)
Accessory Bolt Holes DrilledYes
Exhaust Port LocationStandard
Valve Guide MaterialPhosphorous bronze
Outside Diameter Of Outer Spring1.645 in (41.8 mm)
Combustion Chamber Volume (Cc)91
Machined For O-RingNo
Exhaust Valve Angle18
Steam Holes DrilledNo
Rocker Arm Studs IncludedNo
Cylinder Head StyleAssembled
Part FitmentSemi Universal
Valve Cover Mounting StylePerimeter bolt
Retainer MaterialTitanium
Intake Runner Volume (Cc)456
Cnc-Machined Exhaust RunnerNo
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.9 in (48.26 mm)
Vendor Part Number2181003
Package Qty1
Package TypeEA
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
