BRODIX BB-2 X and BB-2 XTRA Cylinder Heads 2021027-2021043

Regular price $ 1,507.98

CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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. The

BB-3 works well on a 540-605 cu in engine. It has a 370 cc intake port and flows over 370

cfm, but may not be angle machined. 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 flows within 1% of each other and is 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:

• PS CB: VALVE BOWLS BLENDED • PS MI: MATCH INTAKE PORT TO BRODIX MG 2001 (BB-2 X, BB-2 XTRA, AND BB-3) 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) 1.625 ROLLER VALVE SPRING - MA 221424, 260 lb CLOSED, 790 lb OPEN, 2.100 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-2 X, BB-2 XTRA, AND BP BB-2 XTRA) 3/8 - BR BB GP-3 (BB-3) - AVAILABLE EXCLUSIVELY FROM BRODIX • 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 2001, COMETIC C5428, FEL-PRO 1252-3 (BB-2 X, BB-2 XTRA, AND BB-3) • 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 • Head Studs: ARP 235-4702 (12 pt) • Accessory Bolt Holes Are Drilled • Spark Plug Starting Points: NGK R5671A-9 FOR ALCOHOL NGK R5671A-8 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) CHECK PISTON VALVE NOTCHES (BB-3) • Pushrods: CHECK PUSHROD CLEARANCE WITH HEAD INSTALLED ON THE ENGINE BLOCK BEFORE FINAL ASSEMBLY

Cylinder Head Specifications:

                              INTAKE     CHAMBER   VALVE SIZES       EXHAUST                         VALVE                                      INTAKE

                                PORT        VOLUME INTAKE/EXHAUST   PATTERN                     CENTERLINE                              MANIFOLD

BB-2 X               340 cc     119 cc    2.300/1.880       Standard                  Standard                  HV 2000 / HV 2001

BB-2 XTRA       365 cc      119 cc    2.300/1.880       Standard                  Standard                  HV 2000 / HV 2001

BP BB-2 XTRA 355 cc      119 cc    2.300/1.880       Standard                  Standard                  HV 2000 / HV 2001

BB-3                  370 cc     119 cc     2.300/1.880      Standard      Exhaust Valve Moved .030    HV 2000 / HV 2001

Cylinder Head Recommendations:

                                 CUBIC INCH     COMPRESSION     CAMSHAFT           RPM                      APPLICATION

BB-2 X                   509 - 555                13.1 Minimum                  Roller                  4000 - 7500                   Pro Street / Drag Race

BB-2 XTRA           540 - 582                13.1 Minimum                  Roller                  4000 - 7500                   Pro Street / Drag Race

BP BB-2 XTRA     540 - 582                13.1 Minimum                  Roller                  4000 - 7500                   Pro Street / Drag Race

BB-3                       555 - 632                14.0 Minimum                   Roller                 4500 - 7500                   Pro Street / Drag Race 

Flow Chart CFM @ 28" H20

                                         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                 2.300 INTAKE            153                  225                 285                 333                368                 365                365

Combustion Chambers) 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               2.300 INTAKE           183                  235                 294                 340                376                 395                408

(CNC Ported)                 1.880 EXHAUST         134                 177                  216                 247                268                 280                288

BB-3                              2.300 INTAKE        145                 206                 265                316                351                371

                                     1.880 EXHAUST    93                 129                161               187                213               229

BASIC EASY ORDER NUMBER:

• BB-2 X Pkg 119 Chamber 340 port vol. (1.645 spring diam) 2021039 MAKE OFFER PER 1

• BB-2 X Pkg 115 Chamber 340 port vol. (1.645 spring diam) 2021043 MAKE OFFER PER 1

• BB-2 XTRA Pkg 119 Chamber 365 port vol. (1.645 spring diam) 2021027 MAKE OFFER PER 1

• BB-2 XTRA Pkg 115 Chamber 365 port vol. (1.645 spring diam) 2021031 MAKE OFFER PER 1

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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