GB 2000™ Series/13.5°

 


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.

Package Heads

Facts and Related Components

• 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

• 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 or
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

• Valve Centerline:
95/150 (WP DR 1213)
85/125 (WP GB 2000*, WP GB 2200, WP GB 2200+30)
75/125 (WP GB 2300)
75/150 (WP GB 2400)

• Intake Manifold:
Fuel Injection (WP DR 1213, WP GB 2300, WP GB 2400)
GM # 24502653 / EDELBROCK # 2955 With BRODIX
Spacers and Valley Plate (WP GB 2000*, WP GB 2200, WP GB 2200+30)
* 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
(CNC Ported)
2.230 Intake 141 221 295 351 396 421 435
1.580 Exhaust 105 159 210 237 252 262 268
WP GB 2000 – 286
(CNC Ported)
2.220 Intake 157 238 302 353 381 399  
1.580 Exhaust 109 152 205 232 241 250  
WP GB 2200 – 282
(CNC Ported)
2.200 Intake 150 223 286 336 368 383  
1.580 Exhaust 104 158 210 235 246 252  
WP GB 2200 – 282+30
(CNC Ported)
2.200 Intake 150 224 289 337 371 396  
1.580 Intake 104 158 210 235 246 252  
WP GB 2300 – 309
(CNC Ported)
2.200 Intake 153 231 286 342 374 394  
1.580 Exhaust 100 151 216 243 250 253  
WP GB 2400 – 325
(CNC Ported)
2.200 Intake
CALL FOR FLOW NUMBERS
1.580 Exhaust

Basic Easy Order Numbers

Part# Easy
Order #
Port
Vol.
Cham.
Vol.
Int/Ext
Valve
Spring Seat
Pressure
Spring
Diam.
Ret.
ST/TI
Per
DR 1213 Bare
1160000 315 49         2
WP DR 1213 Bare
1168000 315 49         2
WP DR 1213 Pkg
1168100 315 49 2.230 TI / 1.600 TI 250 1.560 TI 1
GB 2000 Bare
1130000 265 64         2
GB 2000 Special
1139002 Custom Order           2
WP GB 2000 L Bare
1138000 286 76         2
WP GB 2000 Bare
1138001 286 76         2
WP GB 2000 L Pkg
1138100 286 76 2.200 TI / 1.580 ST 240 1.550 TI 1
WP GB 2000 Pkg
1138101 286 76 2.200 TI / 1.580 ST 240 1.550 TI 1
WP GB 2000 L Special
1139000 Custom Order           2
WP GB 2000 Special
1139001 Custom Order           2
WP GB 2200 Bare
1138006 282 69         2
WP GB 2200 L Bare
1138002 282 69         2
WP GB 2200 Pkg
1138104 292 69 2.200 TI / 1.580 ST 240 1.550 TI 1
WP GB 2200 L Pkg
1138105 292 69 2.200 TI / 1.580 ST 240 1.550 TI 1
WP GB 2300 Bare
1138007 309 49         2
WP GB 2300 L Bare
1138003 309 49         2
WP GB 2300 Pkg
1138106 309 49 2.200 TI / 1.580 ST 240 1.550 TI 1
WP GB 2300 L Pkg
1138107 309 49 2.200 TI / 1.580 ST 240 1.550 TI 1
WP GB 2400 Bare
1138004 325 53         2
WP GB 2400 L Bare
1138005 325 53         2
WP GB 2400 Pkg
1138102 325 53 2.200 TI / 1.580 ST 240 1.550 TI 1
WP GP 2400 L Pkg
1138103 325 53 2.200 TI / 1.580 ST 240 1.550 TI 1