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Brodix BB-4 Series / 24°

Part Number 2041004
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Brodix BB-4 Series / 24°
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Your Price:  
$2,680.56
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Description

The BRODIX BB-4 valve angles have been rolled 2° from stock to produce more torque and less chamber volume.
The BB-4 has a raised intake port design (approximately .400”) allowing the short-turn radius a better air flow angle without sacrificing velocity.Our competitors offer a similar version of these heads, but they have larger intake ports in the stock location. The competitor’s low profile head slows down the air speed making the engine extremely lazy. If you want to take the next step up from a standard valve angle cylinder head, the BRODIX BB-4 is the ticket.
***The price in the shopping cart reflects a pair of heads***

  • Ends milled and drilled for accessories
  • 24° Valve angles
  • Raised valve cover rail
  • Best rocker stud bosses in the industry
Cylinder Head Specifications
Intake Port Chamber Volume Valve Sizes Intake/Exhaust Exhaust
Pattern
Valve
Centerline
Intake Manifold
BB-4 340 cc 119 cc 2.300/1.880 Standard Standard SA 2012/SA 2020
STS BB-4
XTRA
390 cc 119 cc 2.350/1.880-1.900 Standard Standard SA 2012/SA 2020

Cylinder Head Recommendations

 

Cubic Inch

Compression

Camshaft

RPM

Application

BB-4

509 - 555

13.1 Minimum

Roller

4000-7500

Pro Street/
Drag Race

STS BB-4 XTRA

565 - 632

13.1 Minimum

Roller

4000-7500

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-4

2.300 Intake

151

211

261

303

334

361

 

1.880 Exhaust

132

161

188

216

236

252

 

STS BB-4 XTRA
4.600 Bore
(CNC Ported)

2.350 Intake

141

206

275

327

382

425

447

1.900 Exhaust

122

156

190

222

245

263

276

 

 

 

 

Package Heads Include

• PS CB:
Valve Bowls Blended• PS MI:
Match Intake Port to BRODIX MG 2001
• 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)
2.350 x 5.568 o.a.l. - BR 81351
(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)
1.900 x 5.494 o.a.l. - BR 81139
(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

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