BRODIX - GB SERIES AND DR 1213 CYLINDER HEADS 1138101

Regular price $ 3,147.72

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

 

Package Heads:

• 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 Pkg Spread Port Exhaust 1138101 MAKE OFFER PER 1

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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