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Vehicle Info NeededBR 7 Series Cylinder Heads 262 cc Intake Ports
Ships on 09/22/2026
Lowest Price Guarantee- BR 7 Series Cylinder Heads
- 262 cc Intake Ports
- 72 cc Combustion Chambers
- 2.204 in. Intake / 1.614 in. Exhaust Valves
- 1.350 in. Dia. Springs - 180 lb. Seat Pressure
- Steel Retainers
- Assembled, Pair
Cylinder Head Specifications - Intake Port Volume: 262cc
- Combustion Chamber Volume: 72cc
- Valves: 2.204' dia. x 5.200' o.a.l. Intake / 1.614' dia. x 5.230' o.a.l. Exhaust ( 8mm Stem Diameter )
- Valve Springs: 1.350' Diameter - Open Pressure: 430 lbs.; Closed Pressure: 180 lbs.; Installed Height: 1.810'; Max Lift: .700'
- Spring Retainers: 1.290' 7° Steel
- Valve Seals: 8mmFacts and Related Components
- Torque Heads: 11mm STUDS - 85 ft-lb. WITH OIL / 8mm STUDS - 26 ft-lb. WITH OIL
- Torque Rocker Studs: 22 ft-lb.
- Intake Gasket: Fel-Pro p/n 375-1208-3 (.060), GM p/n 809-19172113
- Head Gasket: Fel-Pro p/n 375-1185-041 (4.175 bore) or GM p/n 809-12582179
- Exhaust Gasket: Fel-Pro p/n 375-1440
- Head Studs: ARP p/n 070-234-4319 (under cut studs)
- Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat (NGK R5671A)
- Valve Angle: 12°
- Flat Milling: .0060' per cc
- Dowell Shift: Standard
- Pushrod Slots: Standard
- Rocker Arms: LS7 style
- Lifters: Standard
- Intake Manifold: LS7 or Equivalent
- Valve Centerline: Standard
- Spring Pockets: 1.350' out of the box, May not be cut any larger or deeper
- Accessory Bolt Holes are Drilled
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
LS7 Design 12° Cylinder Heads from Brodix!
Brodix delivers the industry's most powerful and durable out-of-the-box LS head in it's class with their BR series. The ''BR 7'' comes standard with 72cc combustion chambers, bowls blended, and intake ports matched. The ''STS BR 7'' is a 100% CNC ported version that flows over 375cfm. 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 415cfm with a 72cc combustion chamber and 2.250'' / 1.614'' valves. The BR-series heads feature the ''6 head bolt per cylinder'' LSX block design but are standard LS block compatible and accepts standard LS7 valvetrain components. The 6-bolt LSX design easily and reliably handles increased cylinder pressures of turbocharged, supercharged or high compression applications. Every casting is poured from A-356 virgin aluminum and tested before Brodix utilizes their in-house processes such as CNC machining and heat treating to assure that you receive the best products for your hard-earned money. Solid, phosphorous bronze guides are used to reduce valve leakage and oil consumption. The ductile iron valve seats are installed for use with unleaded fuel. Sold in Pairs.
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