BRODIX PB 1801 Cylinder Heads/18 2181005

Regular price $ 1,930.33

CALL SHANON AT 507 445 3235 FOR ANY QUESTIONS.

The 18° Pro Stock style cylinder heads from BRODIX are the Big Dukes. The PB 1800 and PB

1801 were the original designs in this legendary series. The PB 1802 is a cast ported version

of the PB 1800 capable of flowing over 480 cfm. The professionals at BRODIX have contoured

each intake port, exhaust port, and combustion chamber to flow its maximum potential out of

the box. The revolutionary PB 1803 cylinder heads from BRODIX feature oval intake ports, CNC

combustion chambers, and use all standard components for the 18° Pro Stock head excluding

the manifold. For the KC PB 1803, BRODIX contacted the best head porters in the business to

incorporate our porting design into a 100% CNC ported masterpiece. The PB 1803 utilizes an

as-cast intake port that delivers outstanding out-of-the-box performance. Copper valve seats

and a 55° seat angle make either head an excellent choice when looking for serious torque and

horsepower. All Big Duke series heads require special pistons, valve covers, head studs, shaft

rockers, and intake manifold.

Package Heads:

• PS CB: VALVE BOWLS BLENDED • PS MI: MATCH INTAKE PORT TO FP 1298 (PB 1800-1802) MATCH INTAKE PORT TO BRODIX MG 2013 (PB 1803) • PS Valve Job: COMPETITION VALVE JOB • Intake Valves: 2.400 X 6.600 o.a.l. - BR 81660, 45° SEAT ANGLE (PB 1800-1802) 2.450 X 6.650 o.a.l. - BR 81665, 55° SEAT ANGLE (PB 1803) • Exhaust Valves: 1.900 X 6.450 o.a.l. - BR 81645, 45° SEAT ANGLE (PB 1800-1802) 1.860 X 6.550 o.a.l. - BR 81685, 55° SEAT ANGLE (PB 1803) • Valve Springs: 1.625 ROLLER VALVE SPRING - MA 221424, 260 lb CLOSED, 790 lb OPEN, 2.100 INSTALLED HEIGHT, .800 MAXIMUM LIFT 1.645 ROLLER VALVE SPRING - CC 948, 315 lb CLOSED, 915 lb OPEN, 2.100 INSTALLED HEIGHT, .850 MAXIMUM LIFT • Retainers: 1.625 10° TITANIUM - MA 23640 1.645 10° TITANIUM - MA 2001 • Valve Locks: 10° JUMBO - CC 611 • Rocker Studs: SHAFT SYSTEM REQUIRED • Valve Seals: 11/32 - US VS529V (1.625 VALVE SPRING) 11/32 - US VS485V (1.645 VALVE SPRING)

Facts And Related Components:

• Torque Heads: 70 ft-lb • Torque Rocker Studs: 40-45 ft-lb • Intake Gaskets: FEL-PRO 1298, COMETIC C5419 (PB 1800-1802) BRODIX MG 2013 (PB 1803, BP PB 1803) • Head Gaskets: 4.540 - FEL-PRO 1017, COMETIC C5433 4.600 - FEL-PRO 1057, COMETIC C5434 • Exhaust Gaskets: FEL-PRO 1412, COMETIC C5418 • Head Studs: ARP 235-4712 (12 pt) • Accessory Bolt Holes Are Drilled • Spark Plug Starting Points: NGK R5671A-10 FOR ALCOHOL NGK R5671A-9 FOR RACING GAS • Spring Pockets: MAY NOT BE CUT ANY LARGER OR DEEPER THAN 1.750 • Valve Angle: 18° AND 4° INTAKE, 9° AND 4° EXHAUST • Angle Milling: NOT AVAILABLE • Flat Milling: .0055 in PER cc • Angle Machining: NOT AVAILABLE • Dowel Shift: NOT AVAILABLE • Pushrod Slots: STANDARD • Rocker Arms: SHAFT SYSTEM - T&D 3036, JESEL KPS 22797 • Lifters: STANDARD • Pistons: STANDARD 18° X 9° VALVE ANGLE • Pushrods: CHECK PUSHROD CLEARANCE WITH HEAD INSTALLED ON THE ENGINE BLOCK BEFORE FINAL ASSEMBLY • 4.375 MINIMUM BORE

Cylinder Head Specifications:

                INTAKE PORT CHAMBER VOLUME VALVE SIZES INT/EXH EXHAUST PATTERN                                    INTAKE MANIFOLD

PB 1801         375 cc                  89 cc                  2.400/1.900               Standard              PM 1800/PM 1810/PM 1903**/PM 1913**

PB 1800        415 cc                   89 cc                   2.400/1.900              Standard              PM 1800/PM 1810/PM 1903**/PM 1913**

PB 1802        456 cc                   91 cc                   2.400/1.900              Standard              PM 1800/PM 1810/PM 1903**/PM 1913**

PB 1803        413 cc                  95 cc                    2.450/1.860              Standard              PM 1803 / PM 1813 / PM 1903 / PM 1913

BP PB 1803  410 cc            95 cc / 91 cc *            2.450/1.860              Standard              PM 1803 / PM 1813 / PM 1903 / PM 1913

*Chamber Volume With Stealth Titanium Valves

** Oval Port Manifold MUST Be Port Matched to Fit Rectangular Port Heads

Cylinder Head Recommendations:

            CUBIC INCH       COMPRESSION          CAMSHAFT          RPM              APPLICATION

PB 1801         522 - 555             13.5 Minimum                Roller              4500 - 7500                Pro Street / Drag Race / Truck Puller

PB 1800         540 - 632             13.5 Minimum                Roller              4500 - 7500                Pro Street / Drag Race / Truck Puller

PB 1802         555 - 632             13.5 Minimum                Roller              4500 - 7500                Pro Street / Drag Race / Truck Puller

PB 1803         522 - 632             13.5 Minimum                Roller              4500 - 7500                Pro Street / Drag Race / Truck Puller

BP PB 1803   522 - 632             13.5 Minimum                Roller               4500 - 7500               Pro Street / Drag Race / Truck Puller 

Flow Chart CFM @ 28" H20

                                         VALVE SIZE     0.200         0.300           0.400           0.500          0.600            0.700          0.800           0.900

PB 1801 (Hand Ported) 2.400 INTAKE      162              245               312               367              411               442             463

4.500 BORE                     1.900 EXHAUST   129              180               222               269              301               308              315

PB 1800                           2.400 INTAKE      117              184               256               328              391               435              453

4.600 BORE                     1.900 EXHAUST   113              166               211               239              252               259              264

PB 1802                           2.400 INTAKE      135              205               280               351              409               449              480

4.600 BORE                     1.900 EXHAUST   100              151               193               234              265               296              306

PB 1802 (CNC                  2.400 INTAKE      156              230               305               361              414               453              476

Combustion Chambers)   1.900 EXHAUST   135              180               219               252              294               306              313

PB 1803 (CNC                  2.450 INTAKE      137              217               296               362              418               464              484              490

Combustion Chambers)   1.860 EXHAUST   110              162               204               238              265               288              320              328

BP PB 1803                      2.450 INTAKE      145              224               300               369              425               475              500              515

(CNC Ported)                   1.860 EXHAUST   126              172               211               245              270               318              338              351

BASIC EASY ORDER NUMBER:

• PB 1801 Pkg 375 cc Intake Runner 1.645 spring diam. 2181005 MAKE OFFER PER 1

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CALL SHANON AT 507 445 3235 FOR ANY QUESTIONS.

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