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:

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

                                  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

                              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:

kc 18 sp c pkg spread port exhaust 1188106 MAKE OFFER PER 2

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