BD™ Series/12°/13.5°

 

 

The BRODIX BD series is the latest in cylinder head technology. This symmetrical port design virtually eliminates head gasket problems that have plagued the small block Chevy for decades.
The BD heads are available CNC ported in several port volumes. Special components needed for proper installation include: injector or intake manifold, headers, shaft rocker system, sheet metal valve covers, head stud kit, and camshaft core.

Package Heads

Facts and Related Components

• PS CB:
Valve Bowls Blended

• PS MI:
Match Intake Port to COMETIC C5421

• PS Valve Job:
Competition Valve Job

• Intake Valves:
2.200 x 6.090 o.a.l. – BX 2200-609T
(BD 2000)
2.200 x 6.250 o.a.l. – BX 2200-625T
(BD 1010)
2.230 x 6.250 o.a.l. – BX 2230-625T
(BD 2300)

• Exhaust Valves:
1.580 x 6.090 o.a.l. – BR 91580 (BD 2000)
1.580 x 6.250 o.a.l. – BX 1580-625T 25 (BD 1010)
1.600 x 6.250 o.a.l. – (BD 2300)

• 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

• Torque Heads:
70 ft-lb

• Torque Rocker Studs:
40-45 ft-lb

• Intake Gaskets:
COMETIC C5421

• Head Gaskets:
350 – COMETIC C5404
400 – COMETIC C5408

• Exhaust Gaskets:
COMETIC C5420

• Head Studs:
Available Exclusively From BRODIX –
BRODIX BR HS/BD CI Block (Cast Iron Block)
BRODIX SKHS BD (Aluminum Block)

• 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° (BD 2000, BD 2300)
12° (BD 1010)

• Angle Milling:
.0065 in Per cc

• Flat Milling:
.0055 in Per cc

• Angle Machining:
Not Available

• Pushrod Slots:
Specify Per Application

• Stud Girdle:
Not Available

• Rocker Arms:
Shaft System with 85/125 or 58/125 Spacing,
Check Heads for Intake Offset –
T&D 2223 (BD 2000),
T&D 22201 (BD 1010),
JESEL KPS 20693

• Lifters:
.180 Offset Right (8) and
.180 Offset Left (8)

• Pistons:
BD 2000 – 13.5° with – 12 Spark Plug Angle
(#1 Cylinder)
BD 2300 – Custom
BD 1010 – Special 12° (#1 Cylinder)

• Pushrods:
Special Length

• Intake Face Angle:
BRODIX 5°

• Valve Covers:
Sheet Metal

• Valve Centerline:
85/125 (WP BD 2000)
95/150 (WP BD 2300)
58/125 (WP BD 1010)

• Intake Manifold:
BM 100 / BM 102 With Valley Tray Required –
Available Exclusively From BRODIX.

Flow Chart cfm @ 28″ H20

  Valve Size
0.200
0.300
0.400
0.500
0.600
0.650 0.700 0.750 0.800
WP BD 2000
(CNC Ported)
2.200 Intake 157 238 302 353 381 389 399    
1.580 Exhaust 109 152 205 232 241 247 250    
WP BD 2300
(CNC Ported)
2.230 Intake 150 223 275 331 382   401 410 417
1.600 Exhaust 113 164 219 246 256   262 265 267
WP BD 1010
(CNC Ported)
2.200 Intake 152 229 292 343 375 383 388    
1.580 Exhaust 117 162 220 245 255 257 260    

Basic Easy Order Numbers

Part# Easy
Order #
Port
Vol.
Cham.
Vol.
Int/Ext
Valve
Spring Seat
Pressure
Spring
Diam.
Ret.
ST/TI
Per
BD 1010 Bare (12°)
1200001 265 64         1
BD 2000 Bare (13.5°)
1200000 265 64         1
BD 2000 Special
1209000 Custom Order           1
WP BD 1010 Bare (12°)
1208001 299 64         1
WP BD 1010 Pkg (12°)
1208101 299 64 2.200 TI / 1.580 ST 240 1.550 TI 1
WP BD 2000 Bare (13.5°)
1208000 285 74         1
WP BD 2000 Pkg (13.5°)
1208100 285 74 2.000 TI / 1.580 ST 240 1.550 TI 1
WP BD 2000 Special
1209001 Custom Order           1
WP BD 2300 Bare (13.5°)
1208002 311 49         1