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The BB-2 and BB-2 Plus heads work well with a heavy car and smaller engine (427-509 cu in). The BB-2 has a 305 cc intake port and flows 320 cfm; the BB-2 Plus has a 312 cc intake port and flows over 340 cfm with only the bowls blended and the intake ports matched. Both heads may be purchased angle milled to 110 cc. The combustion chambers are 119 cc and are properly shaped for use with either methanol or gasoline, preventing detonation.
While creating the BB-2 Plus CNC, the professionals at BRODIX invested many long hours on the flow bench and at the track developing a completely ported cylinder head. The BRODIX porting design was incorporated into a 100% CNC ported masterpiece that can be mass produced. The CNC ported BB-2 Plus castings are CNC ported to a mirror finish and flow within 1% of each other.
The bottom line is that our customers can now buy the most accurate, best flowing out-of-the-box cylinder heads available 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, and the valve cover rails are now raised to assure no oil leakage.
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Strongest Castings in The Business!
See a Comparison
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Intake Port
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Chamber Volume
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Valve Sizes Intake/Exhaust
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Exhaust
Pattern
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Valve
Centerline
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Intake Manifold
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BB-2
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305 cc
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119 cc
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2.250/1.880
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Standard
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Standard
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HV 2000/
HV 2001
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BB-2 PLUS
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312 cc
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119 cc
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2.250/1.880
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Standard
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Standard
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HV 2000/
HV 2001
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STS BB-2 PLUS
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320 cc
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119 cc
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2.250/1.880
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Standard
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Standard
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HV 2000/
HV 2001
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Cubic Inch
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Compression
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Camshaft
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RPM
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Application
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BB-2
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477 - 482
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11.5 Minimum
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Flat Tappet/Roller
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4000-7000
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Pro Street/
Drag Racing
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BB-2 PLUS
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427 - 509
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11.5 Minimum
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Flat Tappet/Roller
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4000-7200
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Pro Street/
Drag Race
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STS BB-2 PLUS
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468 - 522
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11.5 Minimum
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Flat Tappet/Roller
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4000-7200
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Pro Street/
Drag Race
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Valve Size
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0.200
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0.300
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0.400
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0.500
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0.600
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0.700
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0.800
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BB-2
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2.250 Intake
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157
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212
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263
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294
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312
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320
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1.880 Exhaust
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107
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137
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166
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190
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214
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226
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BB-2 PLUS
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2.250 Intake
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150
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215
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265
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311
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334
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344
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1.880 Exhaust
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122
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148
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187
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216
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229
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238
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STS BB-2 PLUS
(CNC Ported)
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2.250 Intake
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162
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244
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285
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328
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359
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369
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373
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1.880 Exhaust
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132
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169
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204
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234
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261
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274
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284
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Available 100% CNC Ported
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• PS CB:
Valve Bowls Blended
• PS MI:
Match Intake Port to BRODIX MG 2001
• PS Valve Job:
Competition Valve Job
• Intake Valves:
2.250 x 5.218 o.a.l. -BR 81040
(Standard Package)
2.250 x 5.318 o.a.l. - BR 81140
(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
• Valve Seals:
11/32 - US VS529V
Special Intake Gaskets Are Available Exclusively From BRODIX
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• Torque Heads:
70 ft-lb
• Torque Rocker Studs:
40-45 ft-lb
• Intake Gaskets:
BRODIX MG 2001, COMETIC C5428,
FEL-PRO 52465
• Head Gaskets:
4.310 - FEL-PRO 1027, COMETIC C5432
4.540 - FEL-PRO 1017, COMETIC C5433
• 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
• Pushrods:
Check Pushrod Clearance with Head Installed on the
Engine Block Before Final Assembly
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BB-2 Bare
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119 Chamber
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2020000
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BB-2 Pkg
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119 Chamber
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2021000
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BB-2 Pkg (1.625 Spring)
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119 Chamber
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2021002
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BB-2 PLUS Bare
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119 Chamber
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2020001
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BB-2 PLUS Pkg
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119 Chamber
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2021012
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BB-2 PLUS Pkg (1.625 Spring)
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119 Chamber
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2021014
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STS BB-2 PLUS Bare
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119 Chamber
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2028001
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STS BB-2 PLUS Pkg
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119 Chamber
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2028109
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STS BB-2 PLUS Pkg (1.625 Spring)
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119 Chamber
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2028110
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119 Chamber
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9992000-3
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119 Chamber
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9992004-3
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119 Chamber
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9992002-3
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Phone: (479) 394-1075 • Fax: (479) 394-1996 • 301 Maple • P.O. Box 1347 • Mena, Arkansas 71953
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| Not legal for sale or use on pollution controlled motor vehicles. |
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© 2009 by Brodix, Inc.
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