CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

The BRODIX GB Series is in a class by itself. These 13.5° valve angle heads were designed with sprint cars, late models, and drag racing in mind.

The GB 2000 series features improved spark plug angles, highly efficient combustion chambers, raised intake ports, moved valve centerlines, and

a raised valve cover rail. The latest evolution of the GB head is the DR 1213 which features a 13.5° exhaust valve angle and a 12.5° intake valve
angle for even greater air flow. Special components required for the GB 2000 series and DR heads are injectors or modified intake manifold, sheet

 metal valve covers, and a shaft rocker system. Call one of our technicians to match a GB series head to your particular application.

• PS CB: VALVE BOWLS BLENDED • PS MI: MATCH INTAKE PORT TO BRODIX MG 2200 • PS Valve Job: COMPETITION VALVE JOB

• Intake Valves: 2.230 X 6.250 o.a.l. - BX 2230-625T, 52° (WP DR 1213) 2.200 X 6.090 o.a.l. - BX 2200-609T (GB 2000, GB 2200)

2.200 X 6.250 o.a.l. - BX 2200-625T (GB 2300) 2.200 X 6.350 o.a.l. - BX 2200-635T (GB 2400) • Exhaust Valves: 1.580 X 6.090 o.a.l. - BR 91580 (GB 2000, GB 2200) 1.580 X 6.250 o.a.l. - BR 91582, BX 1580-625 T 25, 45° (WP DR 1213, GB 2300) 1.580 X 6.350 o.a.l. - BR 91535D, BX 1580-635 T 25

(GB 2400) • Valve Springs: 1.550 ROLLER VALVE SPRING - GA 1000, 240 lb CLOSED, 550 lb OPEN, 1.950 INSTALLED

HEIGHT, .700 MAXIMUM LIFT 1.550 ROLLER VALVE SPRING - IS 9985, 260 lb CLOSED, 600 lb OPEN, 1.950 INSTALLED

HEIGHT, .800 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: BRODIX MG 2200, COMETIC C5423 • 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 C5422 • Head Studs: AVAILABLE EXCLUSIVELY FROM BRODIX - BRODIX BR HSRP/GB CI BLOCK (GB 2000) BRODIX BR HSGB 2200 CI BLK (GB 2200) • 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: 13.5° • Angle Milling: NOT AVAILABLE • Flat Milling: .0060 in PER cc • Angle Machining: NOT AVAILABLE

• Pushrod Slots: LEFT BARE AND UNCUT • Stud Girdle: NOT AVAILABLE • Rocker Arms: SHAFT SYSTEM WITH 85/125 SPACING - T&D 2221,

JESEL KPS 20592 (GB SERIES), 95/150 SPACING - T&D 22221, JESEL KPS 411164 (WP DR 1213), CHECK HEADS FOR INTAKE OFFSET

• Lifters: .180 OFFSET • Pistons: SPECIAL 13.5° WITH -12 SPARK PLUG ANGLE • Pushrods: SPECIAL LENGTH • Intake Face Angle: BRODIX 5°

• Valve Covers: SHEET METAL

Cylinder Head Specifications:

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

WP DR 1213          315 cc             49 cc                             2.230/1.580                         Spread Port                  95/150                        Fuel Injection

WP GB 2000*        286 cc             76 cc                             2.200/1.580                         Spread Port                  85/125       GM # 24502653 / Edelbrock # 2955

                                                                                                                                            With BRODIX Spacers and Valley Plate

WP GB 2200          282 cc             69 cc                             2.200/1.580                          Spread Port                  85/125       GM # 24502653 / Edelbrock # 2955

                                                                                                                                            With BRODIX Spacers and Valley Plate

WP GB 2200+30    291 cc             69 cc                             2.200/1.580                           Spread Port                 85/125       GM # 24502653 / Edelbrock # 2955

                                                                                                                                            With BRODIX Spacers and Valley Plate

WP GB 2300          309 cc             49 cc                              2.200/1.580                           Spread Port                 75/125       Fuel Injection

WP GB 2400          325 cc             53 cc                              2.200/1.580                           Spread Port                 75/150       Fuel Injection

Cylinder Head recommendations:

                                  CUBIC INCH           COMPRESSION         CAMSHAFT                     RPM                             APPLICATION

WP DR 1213         380 - 440          13.5 Minimum        Roller             4500 - 8500          Oval Track / Drag Race

WP GB 2000*       380 - 410          13.5 Minimum        Roller             4500 - 8500          Oval Track / Drag Race

WP GB 2200         380 - 421          13.5 Minimum        Roller             4500 - 8500          Oval Track / Drag Race

WP GB 2200+30   380 - 421          13.5 Minimum        Roller              4500 - 8500         Oval Track / Drag Race

WP GB 2300         380 - 440          13.5 Minimum        Roller              4500 - 8500         Oval Track / Drag Race

WP GB 2400         380 - 454          13.5 Minimum        Roller              4500 - 8500         Oval Track / Drag Race

*WP GB 2000 are 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         0.800

WP DR 1213                 2.230 INTAKE            141         221         295         351         396         421        435

(CNC Ported)               1.580 EXHAUST         105         159         210         237         252         262        268

WP GB 2000 - 286        2.200 INTAKE            157         238         302         353         381         399

(CNC Ported)               1.580 EXHAUST         109         152         205         232         241         250

WP GB 2200 - 282        2.200 INTAKE            150         223         286         336         368         383

(CNC Ported)               1.580 EXHAUST         104         158         210         235         246         252

WP GB 2200 - 282+30 2.200 INTAKE             150         224         289         337         371         396

(CNC Ported)               1.580 EXHAUST        104         158          210         235         246         252

WP GB 2300 - 309        2.200 INTAKE           153         231          286         342         374         394

(CNC Ported)               1.580 EXHAUST        100         151          216         243         250         253

WP GB 2400 - 325        2.200 INTAKE CALL FOR FLOW NUMBERS

(CNC Ported)               1.580 EXHAUST

WP GB 2000 L Bare Spread Port Exhaust 1138000 MAKE OFFER PER 2  

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