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 Available
CNC 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*   254cc  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       57 cc   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:

• wp 18 sp c bare spread port exhaust 1188001 MAKE OFFER PER 2

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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