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 72 cc combustion chamber and 2.250 / 1.614 valves.
BR 7™
• 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
• 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
• Uses Standard LS7 Components
STS BR 7
• 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
• 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
• Uses Standard LS7 Components
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 LS7 Components
• 12° Valve Angle
• Flows Over 415 cfm
• 2.250 / 1.614 Valve Sizes
• 50° Valve Job (Intake)
• 45° Valve Job (Exhaust)
• 273 cc Intake Port
• Uses Standard LS7 Components
• 12° Valve Angle
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Assembled units come with:
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• Valve Springs:
1.350 Hydraulic Roller Spring – MA 221435,
180 lb Closed, 430 lb Open,
1.885 Installed Height,
.700 Maximum Lift
(BR 7, STS BR 7, STS BR 7 273)
1.350 Hydraulic Roller Spring – MA 221435,
180 lb Closed, 430 lb Open,
1.885 Installed Height,
.700 Maximum Lift
(BR 7, STS BR 7, STS BR 7 273)
• Intake Valves:
2.204 x 5.200 o.a.l. x 8 mm Stem, Beadlock – BR 70204
(BR 7, STS BR 7)
2.250 x 5.200 o.a.l. x 8 mm Stem, Beadlock – BR 70225
(STS BR 7 273)
2.204 x 5.200 o.a.l. x 8 mm Stem, Beadlock – BR 70204
(BR 7, STS BR 7)
2.250 x 5.200 o.a.l. x 8 mm Stem, Beadlock – BR 70225
(STS BR 7 273)
• Exhaust Valves:
1.614 x 5.230 o.a.l. x 8 mm Stem, Beadlock -BR 70614
(BR 7, STS BR 7, STS BR 7 273)
1.614 x 5.450 o.a.l. x 8 mm Stem, Beadlock – BR 72614
(STS BR 7 BS 273)
1.614 x 5.230 o.a.l. x 8 mm Stem, Beadlock -BR 70614
(BR 7, STS BR 7, STS BR 7 273)
1.614 x 5.450 o.a.l. x 8 mm Stem, Beadlock – BR 72614
(STS BR 7 BS 273)
Cylinder heads sold as in pairs