BB-2 X™, BB-2 Xtra™ and BB-3™ Series/26°

 

 

 

The BB-2 X head works well with a light car or large engine (509-555 cu in). It has a 340 cc intake port and flows over 360 cfm with only the bowls blended and the intake ports matched to the gasket. The BB-2 X may be purchased angle milled to 110 cc or angle machined to 98 cc.The BB-2 XTRA head works well on a 540 cu in or larger engine. It has a 365 cc intake port and flows over 375 cfm with only the bowls blended and the intake ports matched to the gasket. While creating the BB-2 XTRA CNC, the professionals at BRODIX invested many long hours on the flow bench and at the track developing a completely ported cylinder head. BRODIX incorporated this porting design into a 100% CNC ported masterpiece that can be mass produced. One of the most accurate, best flowing out-of-the-box cylinder heads is now available. Each of the castings flow within 1% of each other and are CNC ported to a mirror finish. The bottom line is that our customers can now buy the best casting with the best CNC porting at the best price. These cylinder heads accept all standard pistons, intake manifolds, and rocker arms. The exhaust ports are raised .600 higher than stock. Valve cover rails are now raised to assure no oil leakage.

Package Heads

Facts and Related Components

• PS CB:
Valve Bowls Blended• PS MI:
Match Intake Port to BRODIX MG 2001 (BB-2 X, BB-2 XTRA)
Match Intake Port to CO C5436 (BP BB-2 XTRA)

• PS Valve Job:
Competition Valve Job

• Intake Valves:
2.300 x 5.468 o.a.l. -BR 81241 (Standard Package)
2.300 x 5.568 o.a.l. – BR 81341 (Spring Upgrade)

• Exhaust Valves:
1.880 x 5.394 o.a.l. – BR 81038 (Standard Package)
1.880 x 5.494 o.a.l. – BR 81138 (Spring Upgrade)

• Valve Springs:
1.550 Roller Valve Spring – GA 1000, 240 lb Closed, 550 lb Open, 1.950 Installed Height, .700 Maximum Lift (Standard Package)
1.640 Roller Valve Spring – MA 221424, 250 lb Closed, 745 lb Open 2.050 Installed Height, .800 Maximum Lift (Spring Upgrade)

• Retainers:
1.550 10° Steel – CC 752 1.625 10° Titanium – MA 23640

• Valve Locks:
10° Jumbo – CC 611

• Rocker Studs:
7/16 – BR 716L, AR RRS-4I

• Guide Plates:
3/8 – CC 4806 (BB-2X, BB-2 XTRA, and BP BB-2 XTRA)

• Valve Seals:
11/32 – US VS529V

• Torque Heads:
70 ft-lb• Torque Rocker Studs:
40-45 ft-lb

• Intake Gaskets:
BRODIX MG 2001, COMETIC C5428 FEL-PRO 1252-3 (BB-2 X, BB-2 XTRA)

• Head Gaskets:
4.310 – FEL-PRO 1027, COMETIC C5432 4.540 – FEL-PRO 1017, COMETIC C5433
4.600 – FEL-PRO 1057, COMETIC C5434

• Exhaust Gaskets:
FEL-PRO 1411, COMETIC C5429

• Head Bolts:
ARP 135-3606, MANLEY 42192 Bolts / 42102 Washers

• Head Studs:
ARP 235-4702 (12 pt)

• Accessory Bolt Holes Are Drilled

• Spark Plug Starting Points:
NGK R5671A-10 for Alcohol NGK R5671A-9 for Racing Gas

• Spring Pockets:
May Not be Cut Any Larger or Deeper Than 1.625

• Valve Angle:
26° and 4° Intake, 17° and 4° Exhaust

• Angle Milling:
.0066 in Per cc

• Flat Milling:
.0050 in Per cc

• Angle Machining:
Not Available on CNC Ported Heads

• Dowel Shift:
Not Available

• Pushrod Slots:
Standard

• Stud Girdle:
Standard, BRODIX 1230

• Rocker Arms:
Standard

• Lifters:
Standard

• Pistons:
Standard (BB-2 X, BB-2 XTRA, and BP BB-2 XTRA)

• Pushrods:
Check Pushrod Clearance with Head Installed on the Engine Block Before Final Assembly

• Valve Centerline:
Standard (BB-2 X, BB-2 XTRA, BP BB-2 XTRA)

• Intake Manifold:
HV 2000 / HV 2001 Special Intake Gaskets Are Available Exclusively From BRODIX®.

Flow Chart cfm @ 28″ H20

Part Number Valve Size 0.200 0.300 0.400 0.500 0.600 0.700 0.800
BB-2 X 2.300 Intake 153 221 276 322 357 363  
1.880 Exhaust 122 138 171 198 216 229  
BB-2 X (CNC Combustion Chambers) 2.300 Intake 153 225 285 333 368 365 365
1.880 Exhaust 132 176 211 235 254 264 270
BB-2 XTRA 2.300 Intake 160 220 277 325 360 379  
1.880 Exhaust 132 159 193 219 234 250  
BP BB-2 XTRA (CNC Ported) 2.300 Intake 167 232 295 346 381 402 408
1.880 Exhaust 132 177 222 255 291 301 313

Basic Easy Order Numbers

Part# Easy Order # Port Vol. Cham. Vol. Int/Ext Valve Spring Seat Pressure Spring Diam. Ret. ST/TI Per
BB-2 X Bare 2020003 340 119         1
BB-2 X Pkg 2021036 340 119 2.300 / 1.880 240 1.550 ST 1
BB-2 X Pkg 2021037 340 119 2.300 / 1.880 240 1.550 TI 1
**BB-2 X Pkg** 2021038 340 119 2.300 / 1.880 250 1.625 TI 1
BB-2 X Pkg 2021039 340 119 2.300 / 1.880 315 1.645 TI 1
BB-2 X Pkg 2021040 340 115 2.300 / 1.880 240 1.550 ST 1
BB-2 X Pkg 2021041 340 115 2.300 / 1.880 240 1.550 TI 1
**BB-2 X Pkg** 2021042 340 115 2.300 / 1.880 250 1.625 TI 1
BB-2 X Pkg 2021043 340 115 2.300 / 1.880 315 1.645 TI 1
BB-2 X Pkg 2021044 340 110 2.300 / 1.880 240 1.550 ST 1
BB-2 X Pkg 2021045 340 110 2.300 / 1.880 240 1.550 TI 1
BB-2 X Pkg 2021046 340 110 2.300 / 1.880 250 1.625 TI 1
BB-2 X Pkg 2021047 340 110 2.300 / 1.880 315 1.645 TI 1
BB-2 X Special 2029003 Custom Order           1
BB-2 XTRA Bare 2020002 365 119         1
BB-2 XTRA Pkg 2021024 365 119 2.300 / 1.880 240 1.550 ST 1
BB-2 XTRA Pkg 2021025 365 119 2.300 / 1.880 240 1.550 TI 1
**BB-2 XTRA Pkg** 2021026 365 119 2.300 / 1.880 250 1.625 TI 1
BB-2 XTRA Pkg 2021027 365 119 2.300 / 1.880 315 1.645 TI 1
BB-2 XTRA Pkg 2021028 365 115 2.300 / 1.880 240 1.550 ST 1
BB-2 XTRA Pkg 2021029 365 115 2.300 / 1.880 240 1.550 TI 1
**BB-2 XTRA Pkg** 2021030 365 115 2.300 / 1.880 250 1.625 TI 1
BB-2 XTRA Pkg 2021031 365 115 2.300 / 1.880 315 1.645 TI 1
BB-2 XTRA Pkg 2021032 365 110 2.300 / 1.880 240 1.550 ST 1
BB-2 XTRA Pkg 2021033 365 110 2.300 / 1.880 240 1.550 ST 1
BB-2 XTRA Pkg 2021034 365 110 2.300 / 1.880 250 1.625 TI 1
BB-2 XTRA Pkg 2021035 365 110 2.300 / 1.880 315 1.645 TI 1
BB-2 XTRA Special 2029002 Custom Order           1
BP BB-2 XTRA Bare 2028000 355 119         1
BP BB-2 XTRA Pkg 2028100 355 119 2.300 / 1.880 240 1.550 TI 1
**BP BB-2 XTRA Pkg** 2028101 355 119 2.300 / 1.880 250 1.625 TI 1
BP BB-2 XTRA Pkg 2028102 355 119 2.300 / 1.880 315 1.645 TI 1
BP BB-2 XTRA Pkg 2028103 355 115 2.300 / 1.880 240 1.550 TI 1
**BP BB-2 XTRA Pkg** 2028104 355 115 2.300 / 1.880 250 1.625 TI 1
BP BB-2 XTRA Pkg 2028105 355 115 2.300 / 1.880 315 1.645 TI 1
BP BB-2 XTRA Special 2029004 Custom Order            
BB-2 X Combo 9992005-3 340 119 2.300 / 1.880 250 1.625 TI 1
BB-2 XTRA Combo 9992001-3 355 119 2.300 / 1.880 250 1.625 TI 1
BP BB-2 XTRA Combo 9992003-3 355 119 2.300 / 1.880 250 1.625 TI 1
**Indicates most popular packages sold. **