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
C ylinder 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 Bare Spread Port Exhaust MAKE OFFER PER 2
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Warning: May cause cancer and reproductive harm.
