BRODIX -18c Series Cylinder Heads/18 WP 18 SP C AP Spread Port Exhaust 1188003

Regular price $ 5,302.74

CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

The BRODIX 18 C cylinder head has an 18° valve angle that works well on dirt late model or
serious drag racing applications. This head has special valve centerlines and dowel location
requiring special components. Interlocking valve seats are installed along with replaceable
phosphorous bronze guides. The combustion chambers may be angle machined down to the
mid 40 cc range without weakening the deck surface. The 18 C has two exhaust bolt patterns
available and a 5° intake face requiring a special intake manifold and components

Package Heads:

• PS CB: VALVE BOWLS BLENDED • PS MI: MATCH INTAKE PORT TO FP 1282 • PS Valve Job: COMPETITION VALVE JOB
• Intake Valves: 2.180 X 5.540 o.a.l. - BR 60518D • Exhaust Valves: 1.625 X 5.540 o.a.l. - BR 60154 • Valve Springs: 1.550 ROLLER VALVE SPRING - GA 1000, 240 lb CLOSED, 550 lb OPEN, 1.950 INSTALLED HEIGHT, .700 MAXIMUM LIFT • Retainers: 1.550 10° TITANIUM - MA 2398BR • Valve Locks: 10° JUMBO - CC 611 • Rocker Studs: SHAFT SYSTEM REQUIRED• Valve Seals: 11/32 - US VS529V.

FACTS AND RELATED COMPONENTS:

• Torque Heads: 70 ft-lb • Torque Rocker Studs: 40-45 ft-lb • Intake Gaskets: MODIFIED FEL-PRO 1282• Head Gaskets: 350 - FEL-PRO 1003, COMETIC C5399 400 - FEL-PRO 1004, COMETIC C5403 • Exhaust Gaskets: SPREAD PORT - BRODIX MG 52464 (TRIM TO FIT), COMETIC C5424 • Head Studs: ARP 234-4727 (12 pt WITH 3/8 CENTER STUDS) • Accessory Bolt Holes Are Drilled• Spark Plug Starting Points: NGK R5671A-10 FOR ALCOHOL NGK R5671A-9 FOR RACING GAS• Spring Pockets: 1.550 OUT OF THE BOX, MAY BE CUT TO 1.625 - NO LARGER OR DEEPER• Valve Angle: 18° • Angle Milling: .0065 in PER cc • Flat Milling: .0055 in PER cc • Angle Machining: NOT AVAILABLE • Pushrod Slots: 58/107 • Stud Girdle: NOT AVAILABLE• Rocker Arms: SHAFT SYSTEM WITH 58/107 SPACING, CHECK HEADS FOR INTAKE OFFSET - T&D 2229, JESEL KPS 15409 • Lifters: .180 OFFSET • Pistons: SPECIAL 18°• Pushrods: SPECIAL LENGTH • Intake Face Angle: 5° A-356 Virgin Aluminum; Easily Repaired 5° Intake Flange AvailableCNC Ported 18° Standard or Spread Port Exhaust 58/107 Valve Spacing Flows Over 390 cfm CNC Ported 

Cylinder Head Specifications:

INTAKE PORT CHAMBER VOLUME VALVE SIZES INTAKE/EXHAUST EXHAUST PATTERN VALVE CENTERLINE INTAKE MANIFOLD

18 SP C                 185 cc          40 cc          2.180/1.625           Angle          Spread Port            58/107          HV 1813 / HV 1814
18 STD C              185 cc          40 cc          2.180/1.625           Angle         18° Standard           58/107          HV 1813 / HV 1814
WP 18 SP C*         254 cc         56 cc          2.180/1.625           Angle          Spread Port            58/107          HV 1813 / HV 1814
KC 18 SP C           254 cc         56 cc          2.180/1.625            Angle         Spread Port            58/107          HV 1813 / HV 1814
WP 18 SP C AP     266 cc         57 cc          2.180/1.625            Angle         Spread Port            58/107          HV 1813 / HV 1814

Cylinder Head Recommendations:

                                    CUBIC INCH         COMPRESSION          CAMSHAFT                 RPM                              APPLICATION

WP 18 SP C*        358 - 430       13.5 Minimum         Roller        4000 - 7500        Oval Track / Drag Race
KC 18 SP C          358 - 430       13.5 Minimum         Roller        4000 - 7500        Oval Track / Drag Race
WP 18 SP C AP    358 - 430       13.5 Minimum         Roller        4000 - 7500       Oval Track / Drag Race

* The 18 SP C is available in several intake port sizes. Ask a BRODIX representative which size would best fit your application

Flow Chart CFM @ 28" H20

                              VALVE SIZE                    0.200                0.300             0.400               0.500              0.600               0.700

WP 18 SP C          2.180 INTAKE                     157                   230                  280                   329                  360                   367
HUT 921.4 A        1.625 EXHAUST                  112                   167                  209                   227                  238                   245
(CNC Ported)
KC 18 SP C          2.180 INTAKE                     163                    232                 288                    335                  351                  360
(CNC Ported)       1.625 EXHAUST                  119                    172                 214                    233                  242                  250
WP 18 SP C AP    2.180 INTAKE                     154                    224                 278                    328                  369                  395
(CNC Ported)       1.625 EXHAUST                  134                    175                 241                    261                  270                  274

BASIC EASY ORDER NUMBER:

wp18 sp c ap bare spread port exhaust 1188003 MAKE OFFER PER 2

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. 

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