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 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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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
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