- Raised Valve Cover Rail
- A-356 Virgin Aluminum; Easily Repaired
- 119 cc Combustion Chamber
- Raised Exhaust
- Available CNC Ported
- Great Out-of-the-Box Horsepower
Description
Photos
Details
Flow Chart
Easy Order Numbers
Instruction Sheet
DescriptionThe 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 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.
Photos DetailsPackage 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 – PAC 1941, 255 lb Closed, 610 lb Open, 1.950 Installed Height .700 Maximum Lift (Standard Package) 1.640 Roller Valve Spring – PAC 1224 270 lb Closed, 775 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 • Intake Valve Seats: P 2.350 3/8 LID • Exhaust Valve Seats: P 2.006 3/8 LID • Intake and Exhaust Valve Guides: BH 545 11/32 P • 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 |
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 and More
| Part# | Easy Order # | Port Vol. | Cham. Vol. | Int/Exh 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 | TI | 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 | 365 | 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. ** | ||||||||