 |
|
 |
|
 |
| |
|
The BRODIX -4 and -5 valve angles have been rolled 2° from stock to produce more torque and less chamber volume.
The -4 and -5 have 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.
When Sonny Leonard designed the -5 cylinder head for larger cubic inch engines, he incorporated the most important things: correct port shape, volume, and velocity. If you want to take the next step up from a standard valve angle cylinder head, the BRODIX -4 or -5 is the ticket.
|
|
|
|
|
|
Strongest Castings in The Business!
See a Comparison
|
|
|
|
|
|
|
|
|
|
|
|
|
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
|
BB-5
|
387 cc
|
119 cc
|
2.350/1.900
|
Standard
|
Standard
|
SA 2012/SA 2020
|
|
|
|
|
|
|
|
|
|
|
|
|
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
|
BB-5
|
565 - 632
|
13.1 Minimum
|
Roller
|
4000-7500
|
Pro Street/
Drag Race
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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
|
BB-5
|
2.350 Intake
|
108
|
150
|
203
|
258
|
309
|
354
|
384
|
1.900 Exhaust
|
77
|
103
|
134
|
167
|
200
|
222
|
238
|
|
|
|
|
|
|
|
|
• 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
Special Intake Gaskets Are Available Exclusively From BRODIX
|
|
|
 |
• 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
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:
24° and 4° Intake,
15° and 4° Exhaust
• Angle Milling:
.0066 in Per cc
• Flat Milling:
.0050 in Per cc
• Angle Machining:
Not Available
• 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
|
|
|
|
|
|
|
BB-4 Bare
|
119 Chamber
|
Custom Order
|
BB-4 Pkg
|
119 Chamber
|
2041004
|
BB-4 Pkg (1.625 Spring)
|
119 Chamber
|
2041006
|
STS BB-4 XTRA Bare
|
119 Chamber
|
2048000
|
STS BB-4 XTRA Pkg
|
119 Chamber
|
2048100
|
STS BB-4 XTRA Pkg (1.625 Spring)
|
119 Chamber
|
2048101
|
BB-5 Bare
|
119 Chamber
|
2050000
|
BB-5 Pkg (1.625 Spring)
|
119 Chamber
|
2051000
|
|
|
|
|
|
|
|
|
|
|
|
Phone: (479) 394-1075 • Fax: (479) 394-1996 • 301 Maple • P.O. Box 1347 • Mena, Arkansas 71953
|
| Not legal for sale or use on pollution controlled motor vehicles. |
|
© 2008 by Brodix, Inc.
|
|
Permission is granted to view and print materials from Brodix.com for the non-commercial purpose of viewing, reading, and retaining them for reference.
Any other copying, distribution, retransmission, or modification of information or materials on this site - whether in electronic or hard copy form - without the express prior written permission of Brodix, Inc., is strictly prohibited.
|
|
