BB-3 Xtra™ Series/24°

• Raised Valve Cover Rail
• 24° Valve Angle
• Newly Designed Intake and Exhaust Ports
• +40 hp Over Standard Heads
• Available CNC Ported
• A-356 Virgin Aluminum; Easily Repaired
 
 

 

The BRODIX BB-3 XTRA has taken the conventional big block to the next level. These cylinder heads feature a valve angle that is rolled two degrees. The -3 XTRA is available in a rectangular-shaped or oval-shaped intake port configuration, and both are offered in an out-of-the box version or completely CNC ported. The out-of-the-box version is available in two port volumes, 345 cc or 363 cc, both with CNC ported 119 cc combustion chambers, CNC bowls blended and ports matched, and flow over 436 cfm. The BB-3 XTRA CNC ported version is available in two port volumes, 366 cc and 380 cc. The 380 cc version flows over 440 cfm. The BB-3 XTRA CNC ported oval ports are available in three port volumes: 332 cc, 351 cc, and 365 cc. This wide range of port volumes allows the oval port to compliment virtually any engine combination available. Port shape, port velocity, and the latest technology have propelled these cylinder heads to the top of their class.

Package Heads

Facts and Related Components

• PS CB:
Valve Bowls Blended

• PS MI:
Match Intake Port to BRODIX MG 2001
(BB-3 XTRA 345, BB-3 XTRA 363)

Match Intake Port to MG 2001
(BP BB-3 XTRA, BP BB-3 XTRA 380)

Match Intake Port to BRODIX MG 2104
(BB-3 XTRA O, BP BB-3 XTRA O 351)

Match Intake Port to BRODIX MG 2050
(BP BB-3 XTRA O 332)

Match Intake Port to BRODIX MG 2150
(BP BB-3 XTRA O 365)

• PS Valve Job:
Competition Valve Job

• Intake Valves:
2.300 x 5.568 o.a.l. – BR 81341
(BB-3 XTRA 345, BB-3 XTRA 363,

BP BB-3 XTRA, BP BB-3 XTRA O 332)
2.350 x 5.568 o.a.l. – BR 81351

(BB-3 XTRA O, BP BB-3 XTRA 380,
BP BB-3 XTRA O 351, BP BB-3 XTRA O 365)

• Exhaust Valves:
1.880 x 5.494 o.a.l. – BR 81138

• Valve Springs:
1.640 Roller Valve Spring – MA 221424,
250 lb Closed, 745 lb Open,
2.050 Installed Height
.800 Maximum Lift
(Standard Package)

1.645 Roller Valve Spring – CC 947 or CC 948,
315 lb Closed, 915 lb Open
2.100 Installed Height,
.850 Maximum Lift
(Spring Upgrade)

• Retainers:
1.625 10° Titanium – MA 23640
1.645 10° Titanium – MA 2001

• Valve Locks:
10° Jumbo – CC 611

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

• Guide Plates:
3/8 – CC 4806

• Valve Seals:
11/32 – US VS529V
(1.625 Valve Spring)

11/32 – US VS485V
(1.645 Valve Spring)

• Torque Heads:
70 ft-lb

• Torque Rocker Studs:
40-45 ft-lb

• Intake Gaskets:
BRODIX MG 2001, FEL-PRO 1252-3
(BB-3 XTRA 345, BB-3 XTRA 363)

BRODIX MG 2001, FEL-PRO 1252-3,
COMETIC C5436
(BP BB-3 XTRA, BP BB-3 XTRA 380)

BRODIX MG 2104
(BB-3 XTRA O, BP BB-3 XTRA O 351)

BRODIX MG 2050
(BP BB-3 XTRA O 332)

BRODIX MG 2150
(BP BB-3 XTRA O 365)

• Head Gaskets:
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:
24° and 4° Intake
15° 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:
2° Valve Rolled Piston

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

• Intake Manifold:
BM 2017* / BM 2027*
(BB-3 XTRA 345, BB-3 XTRA 363, BP BB-3 XTRA, BP BB-3 XTRA 380)

BM 2017 / BM 2027
(BB-3 XTRA O, BP BB-3 XTRA O 332,

BP BB-3 XTRA O 351, BP BB-3 XTRA O 365)
* Oval Port Manifold Must Be Port Matched to Fit Rectangular Port Heads

Flow Chart cfm @ 28″ H20

Part Number Valve Size 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900
BB-3 XTRA 345 2.300 Intake 162 244 312 355 389 406 414 417
1.880 Exhaust 138 190 227 256 275 296 301 304
BB-3 XTRA 363 2.300 Intake 162 234 305 360 399 430 433 436
1.880 Exhaust 142 187 217 243 265 275 280 281
BP BB-3 XTRA
(CNC Ported)
2.300 Intake 159 237 307 362 394 416 423 426
1.880 Exhaust 134 177 216 249 277 304 308 313
BP BB-3 XTRA 380
(CNC Ported)
2.350 Intake 45° 159 237 309 362 401 430 443 442
1.880 Exhaust 45° 134 177 216 249 277 304 308 313
BB-3 XTRA O 2.350 Intake 45° 162 233 298 355 397 417 420 411
1.880 Exhaust 45° 142 187 217 243 265 275 280 281
BP BB-3 XTRA O 332
(CNC Ported)
2.300 Intake 50° 155 231 300 354 396 424 425 428
1.880 Exhaust 45° 134 177 216 249 277 304 308 313
BP BB-3 XTRA O 351
(CNC Ported)
2.350 Intake 50° 154 226 300 356 405 433 441 444
1.880 Exhaust 45° 134 177 216 249 277 304 308 313
BP BB-3 XTRA O 365
(CNC Ported)
2.350 Intake 50° 150 224 296 356 407 439 452 460
1.880 Exhaust 45° 134 177 216 249 277 304 308 313

Basic Easy Order Numbers

Part# Easy
Order #
Port
Vol.
Cham.
Vol.
Int/Ext
Valve
Spring Seat
Pressure
Spring
Diam.
Ret.
ST/TI
Per
BB-3 XTRA 345 Bare
2030003 345 119 2.300 / 1.880       1
BB-3 XTRA 345 Pkg
2031014 345 119 2.300 / 1.880 240 1.550 ST 1
BB-3 XTRA 345 Pkg
2031015 345 119 2.300 / 1.880 250 1.625 TI 1
BB-3 XTRA 345 Pkg
2031016 345 119 2.300 / 1.880 315 1.645 TI 1
BB-3 XTRA 363 Bare
2030001 363 119         1
BB-3 XTRA 363 Pkg
2031003 363 119 2.300 / 1.880 250 1.625 TI 1
BB-3 XTRA 363 Pkg
2031004 363 119 2.300 / 1.880 315 1.645 TI 1
BB-3 XTRA 363 Pkg
2031005 363 115 2.300 / 1.880 250 1.625 TI 1
BB-3 XTRA 363 Pkg
2031006 363 115 2.300 / 1.880 315 1.645 TI 1
BB-3 XTRA O Bare
2030002 335 119         1
BB-3 XTRA O Pkg 2031007 335 119 2.350 / 1.880 240 1.550 ST 1
BB-3 XTRA O Pkg
2031008 335 119 2.350 / 1.880 250 1.625 TI 1
BB-3 XTRA O Pkg
2031009 335 119 2.350 / 1.880 315 1.645 TI 1
BB-3 XTRA O Pkg
2031010 335 115 2.350 / 1.880 240 1.550 ST 1
BB-3 XTRA O Pkg
2031011 335 115 2.350 / 1.880 250 1.625 TI 1
BB-3 XTRA O Pkg
2031012 335 115 2.350 / 1.880 315 1.645 TI 1
BP BB-3 XTRA Bare
2038000 366 119         1
BP BB-3 XTRA Pkg
2038100 366 119 2.300 / 1.880 250 1.625 TI 1
BP BB-3 XTRA Pkg
2038101 366 119 2.300 / 1.880 315 1.645 TI 1
BP BB-3 XTRA Pkg
2038102 366 115 2.300 / 1.880 250 1.625 TI 1
BP BB-3 XTRA Pkg
2038103 366 115 2.300 / 1.880 315 1.645 TI 1
BP BB-3 XTRA SPECIAL
2039001 CUSTOM ORDER           1
BP BB-3 XTRA 380 Bare
2038004 380 119         1
BP BB-3 XTRA 380 Pkg
2038116 380 119 2.350 / 1.880 250 1.625 TI 1
BP BB-3 XTRA 380 Pkg
2038117 380 119 2.350 / 1.880 315 1.645 TI 1
BP BB-3 XTRA 380 Pkg
2038118 380 115 2.350 / 1.880 250 1.625 TI 1
BP BB-3 XTRA 380 Pkg
2038119 380 115 2.350 / 1.880 315 1.645 TI 1
BP BB-3 XTRA O 332 Bare
2038002 332 119         1
BP BB-3 XTRA O 332 Pkg
2038108 332 119 2.300 / 1.880 250 1.625 TI 1
BP BB-3 XTRA O 332 Pkg
2038109 332 119 2.300 / 1.880 315 1.645 TI 1
BP BB-3 XTRA O 332 Pkg
2038112 332 115 2.300 / 1.880 250 1.625 TI 1
BP BB-3 XTRA O 332 Pkg
2038113 332 115 2.300 / 1.880 315 1.645 TI 1
BP BB-3 XTRA O 351 Bare
2038001 351 119         1
BP BB-3 XTRA O 351 Pkg
2038104 351 119 2.350 / 1.880 250 1.625 TI 1
BP BB-3 XTRA O 351 Pkg
2038105 351 119 2.350 / 1.880 315 1.645 TI 1
BP BB-3 XTRA O 351 Pkg
2038106 351 115 2.350 / 1.880 250 1.625 TI 1
BP BB-3 XTRA O 351 Pkg
2038107 351 115 2.350 / 1.880 315 1.645 TI 1
BP BB-3 XTRA O 365 Bare
2038003 365 119         1
BP BB-3 XTRA O 365 Pkg
2038110 365 119 2.350 / 1.880 250 1.625 TI 1
BP BB-3 XTRA O 365 Pkg
2038111 365 119 2.350 / 1.880 315 1.645 TI 1
BP BB-3 XTRA O 365 Pkg
2038114 365 115 2.350 / 1.880 250 1.625 TI 1
BP BB-3 XTRA O 365 Pkg
2038115 365 115 2.350 / 1.880 315 1.645 TI 1
BP BB-3 XTRA COMBO
9992007-3 366 119 2.350 / 1.880 250 1.625 TI 1
BP BB-3 XTRA O COMBO
9992009-3 332 / 351 / 365 119 2.300 – 2.350 / 1.880 250 1.625 TI 1
**Indicates most popular packages sold. **