BRODIX -12 SERIES SMALL BLOCK CHEVY COMPLETE CYLINDER HEADS/15 1158100

Regular price $ 3,704.85

CALL SHANON  507 445 3235 WITH ANY QUESTIONS.

In the mid 1980’s, BRODIX was the first company to offer a “rolled over” valve angle cylinder

head. Since then, the -12 cylinder head has won thousands of late model and sprint car races

and is still winning races today. BRODIX has taken this design even further by adding raised

intake ports, several valve spacings, and more efficient combustion chambers. The -12 cylinder

head is available in several port sizes to fulfill our customers’ needs.

Package Heads:

• PS CB: VALVE BOWLS BLENDED • PS MI: MATCH INTAKE PORT TO FP 1263 (WP 12 SP RI, WP 12 SP RI MC) MATCH INTAKE PORT TO FP

1209 (KC 12 SP B, STS 12 SP W B MC) • PS Valve Job: COMPETITION VALVE JOB • Intake Valves: 2.150 X 5.440 o.a.l. - BR 60415 (40/60)

2.200 X 5.440 o.a.l. (70/125) • Exhaust Valves: 1.600 X 5.440 o.a.l. - BR 60044 • 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 Related Components:

• Torque Heads: 70 ft-lb • Torque Rocker Studs: 40-45 ft-lb • Intake Gaskets: FEL-PRO 1263, ASK FOR COMETIC PART NUMBER (WP 12 SP RI, WP 12 SP RI MC) FEL-PRO 1209 (KC 12 SP B, STS 12 SP W B MC) • 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 234-4723 (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: 15° • Angle Milling: .0065 in PER cc • Flat Milling: .0055 in PER cc • Angle Machining: NOT AVAILABLE

• Pushrod Slots: 40/60, 58/107, 70/125 • Stud Girdle: NOT AVAILABLE • Rocker Arms: SHAFT SYSTEM WITH 40/60, 58/107 OR 70/125

SPACING, CHECK HEADS FOR NTAKE OFFSET 40/60 - TD 2206, JESEL KPS 01204 58/107 - TD 2207

70/125 - TD 22071 • Lifters: .180 OFFSET • Pistons: SPECIAL 15° • Pushrods: SPECIAL LENGTH

• Intake Face Angle: BRODIX 10° STANDARD


Cylinder Head Specifications:

 

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

WP 12 SP RI             247/262 cc                      60 cc                             2.150/1.600                            Spread Port                             40/60                             MS 89

WP 12 SP RI MC      262 cc                             61 cc                             2.170/1.600                             Spread Port                            58/107                                N/A

KC 12 SP B               287 cc                              61 cc                             2.150/1.600                              Spread Port                            40/60                  HV 1200 / HV 1201

STS 12 SP W B MC 305 cc                              69 cc                             2.200/1.600                             Spread Port                            70/125                HV 1200 / HV 1201

Cylinder head recommendations:

                                    CUBIC INCH     COMPRESSION      CAMSHAFT           RPM                                APPLICATION

 

WP 12 SP RI                 358 - 410           13.5 Minimum             Roller            4000-7500            Oval Track / Drag Race With Nitrous

WP 12 SP RI MC            358 - 410            13.5 Minimum             Roller            4000-7500            Oval Track / Drag Race With Nitrous

KC 12 SP B                     406 - 430            13.5 Minimum             Roller            4000-7500            Oval Track / Drag Race With Nitrous

STS 12 SP W B MC         421 - 440          13.5 Minimum            Roller           4000-7500          Oval Track / Drag Race With Nitrous

Flow Chart CFM @ 28" H20

                                          VALVE SIZE                      0.200        0.300         0.400        0.500        0.600        0.700         0.800

 

WP 12 SP RI -247           2.150 INTAKE                   152            230           284           316           326           330

(CNC Ported)                  1.600 EXHAUST                120            170           216           233           240           248

WP 12 SP RI - 262          2.150 INTAKE                   150            228           282           322           330           335

(CNC Ported)                  1.600 EXHAUST                120            170           216           233           240           248

WP 12 SP RI MC - 262  2.170 INTAKE                   155            224           282           329            335           347

(CNC Ported)                 1.600 EXHAUST                 117            177            218           231           240           247

KC 12 SP B                    2.150 INTAKE                    155            230           284            320           343           354

(CNC Ported)                1.600 EXHAUST                  120            168           216           232           240            247

STS 12 SP W B MC      2.200 INTAKE                     159            233           290           334           361            372

(CNC Ported)                1.600 EXHAUST                  106            145           190           221           235            247

BASIC EASY ORDER NUMBER:

• KC 12 SP B Pkg Spread Port Exhaust 1158100 MAKE OFFER PER 2

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CALL SHANON 507 445 3235 WITH ANY QUESTIONS.

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