CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
BR SERIES LS COMPATIBLE/12 DEGREE CYLINDER HEADS
BRODIX delivers the industry's most durable
replacement for the LS style cylinder heads
with the introduction of the BR series. The
BR 7 is an out-of-the-box version that comes
standard with 71 cc combustion chambers,
bowls blended, and intake ports matched.
The STS BR 7 is a 100% CNC ported version
that flows over 375 cfm. The BR 7 and the
STS BR 7 both utilize a 12° valve angle and
2.204 / 1.614 valve combination. The
STS BR 7 273 flows over 415 cfm with a
71 cc combustion chamber and 2.250 / 1.614
valves. The BR 7 series heads accept all
standard LS components and share all of the
legendary BRODIX features including: easily
repairable A-356 virgin aluminum alloy and
the strongest deck surface in the business.
• Torque Heads: 11 mm STUDS - 85 ft-lb WITH OIL
8 mm STUDS - 26 ft-lb WITH OIL
• Torque Rocker Studs: 22 ft-lb
• Intake Gaskets: GM 19172113, FEL-PRO 1208-3 (.060) - (BR 7, STS BR 7)
GM 19172113 TRIM TO FIT, FEL-PRO 1208-3 TRIM TO FIT -
(STS BR 7 273)
• Head Gaskets: GM 12582179, FEL-PRO 1185-041 (4.175 BORE)
• Exhaust Gaskets: FEL-PRO 1440
• Head Studs: ARP 234-4317
• Accessory Bolt Holes Are Drilled
• Spark Plug Starting Points: 14mm 3/4 REACH SEALS WITH WASHER
NGK R5671A-7 FOR PUMP GAS
NGK R5671A-8 FOR RACING GAS
• Spring Pockets: MAY NOT BE CUT ANY LARGER OR DEEPER THAN 1.350
• Valve Angle: 12°
• Flat Milling: .0060 in PER cc
• Dowel Shift: STANDARD
• Pushrod Slots: STANDARD
• Pistons: STANDARD
• Rocker Arms: STANDARD
• Lifters: STANDARD
• Pushrods: MEASURE FOR PROPER LENGTH
STS BR 7
• 100% LS Compatible
• 264 cc Rectangular Intake Port Flows
Over 375 cfm
• Exhaust Port Flows 240 cfm
• 71 cc Combustion Chambers
• 2.204 / 1.614 Valve Sizes
• 100% CNC Ported
• 4.125 Minimum Bore
BR 7
• 100% LS Compatible
• 262 cc Rectangular Intake Port Flows
Over 360 cfm
• Exhaust Port Flows 221 cfm
• 71 cc CNC Ported Combustion Chambers
• 2.204 / 1.614 Valve Sizes
• Most Powerful Out-of-the-Box Head in Its Class
• 4.125 Minimum Bore
Package Heads:
• PS CB: VALVE BOWLS BLENDED
• PS MI: MATCH INTAKE PORTS
• PS Valve Job: COMPETITION VALVE JOB
• Intake Valves: 2.204 X 5.200 o.a.l. X 8 mm STEM, BEAD LOCK - BR 70204
(BR 7, STS BR 7)
2.250 X 5.200 o.a.l. X 8 mm STEM, BEAD LOCK
(STS BR 7 273)
• Exhaust Valves: 1.614 X 5.230 o.a.l. X 8 mm STEM, BEAD LOCK - BR 70614
• Valve Springs: 1.295 HYDRAULIC ROLLER SPRING - MA 221436,
155 lb CLOSED, 405 lb OPEN, 1.810 INSTALLED
HEIGHT, .600 MAXIMUM LIFT
• Retainers: 1.290 7° STEEL - MA 23621
• Valve Locks: 7° MACHINED BEAD LOCK - MA 13098
Rocker Studs: NOT AVAILABLE
• Valve Seals: 8 mm - US VS805V
Facts And Related Components:
Torque Heads: 11 mm STUDS - 85 ft-lb WITH OIL
8 mm STUDS - 26 ft-lb WITH OIL
• Torque Rocker Studs: 22 ft-lb
• Intake Gaskets: GM 19172113, FEL-PRO 1208-3 (.060) - (BR 7, STS BR 7)
GM 19172113 TRIM TO FIT, FEL-PRO 1208-3 TRIM TO FIT -
(STS BR 7 273)
• Head Gaskets: GM 12582179, FEL-PRO 1185-041 (4.175 BORE)
• Exhaust Gaskets: FEL-PRO 1440
• Head Studs: ARP 234-4317
• Accessory Bolt Holes Are Drilled
• Spark Plug Starting Points: 14mm 3/4 REACH SEALS WITH WASHER
NGK R5671A-7 FOR PUMP GAS
NGK R5671A-8 FOR RACING GAS
• Spring Pockets: MAY NOT BE CUT ANY LARGER OR DEEPER THAN 1.350
• Valve Angle: 12°
• Flat Milling: .0060 in PER cc
• Dowel Shift: STANDARD
• Pushrod Slots: STANDARD
• Pistons: STANDARD
• Rocker Arms: STANDARD
• Lifters: STANDARD
• Pushrods: MEASURE FOR PROPER LENGTH
STS BR 7 273
• Flows Over 415 cfm
• 2.250 / 1.614 Valve Sizes
• 50° Valve Job (Intake)
• 45° Valve Job (Exhaust)
• 273 cc Intake Port
• Uses Standard LS 7 Components
• 12° Valve Angle
• 100% LS Compatible
• 264 cc Rectangular Intake Port Flows
Over 375 cfm
• Exhaust Port Flows 240 cfm
• 71 cc Combustion Chambers
• 2.204 / 1.614 Valve Sizes
• 100% CNC Ported
• 4.125 Minimum Bore
CYLINDER HEAD SPECIFICATIONS:
Intake Chamber VALVE SIZES VALVE EXHAUST VALVE INTAKE
PORT Volume INTAKE/EXHAUST ANGLE PATTERN CENTERLINE MANIFOLD
BR 7 262 cc 71 cc 2.204 / 1.614 12° Standard Standard Standard
STS BR 7 264 cc 71 cc 2.204 / 1.614 12° Standard Standard Standard
STS BR 7 273 273 cc 71 cc 2.250 / 1.614 12° Standard Standard Standard
FLOW CHART AT 28" H20
VALVE SIZE 0.200 0.300 0.400 0.500 0.600 0.650 0.700
BR 7 2.204 INTAKE 150 144 294 334 360 364
1.614 EXHAUST 113 158 188 208 216 221
STS BR 7 2.204 INTAKE 159 240 303 343 369 376 364
(CNC Ported) 1.614 EXHAUST 116 169 208 224 233 235 240
STS BR 7 273 2.250 INTAKE 147 233 286 344 381 409 416
(CNC Ported) 1.614 EXHAUST 116 169 208 224 233 235 240
BASIC EASY ORDER NUMBERSEasy order # Port Vol Cham Vol. Int/Exh Valve Spring Diam Ret. ST/TI Price
• BR 7 Bare 1170000 262 71 MAKE OFFER PER 2
• BR 7 Pkg 1171000 262 71 2.204/1.614 1.295 ST MAKE OFFER PER 2
• STS BR 7 Bare 1178000 264 71 MAKE OFFER PER 2
• STS BR 7 Pkg 1178100 264 71 2.204/1.614 1.295 ST MAKE OFFER PER 2
• STS BR 7 273 Bare 1178001 273 72 MAKE OFFER PER 2
• STS BR 7 273 Pkg 1178101 273 72 2.250/1.1614 1.350 ST MAKE OFFER PER 2
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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
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