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- BB-2 Series Cylinder Head
- 305cc Intake Ports
- 119cc Combustion Chambers
- 2.250'' Intake / 1.880'' Exhaust Valve Sizes
- Bare, 1/pkg.
This head is sold as an unassembled bare casting. It is finished machined and includes valve guides and valve seats installed. This head does NOT include rocker studs, valves, springs, retainers or locks.
Cylinder Head Specifications - Intake Port Volume: 305cc - Rectangle Port
- Combustion Chamber Volume: 119cc
- Valve Sizes: 2.250' Intake / 1.880' Exhaust ( 11/32' Stem Diameter )
- Spark Plug Configuration: AngledFacts and Related Components
- Torque Heads: 70 ft-lb.
- Torque Rocker Studs: 40-45 ft-lb.
- Intake Gasket: Brodix p/n 158-MG2001, Fel-Pro p/n 375-1252-3, Cometic p/n 245-C5428
- Head Gasket: 4.310' Bore - Fel-Pro p/n 375-1027, Cometic p/n 245-C5432; 4.540' Bore - Fel-Pro p/n 375-1017, Cometic p/n 245-C5433
- Exhaust Gasket: Fel-Pro p/n 375-1411 or Cometic p/n 245-C5429
- Head Bolts: ARP p/n 070-135-3606, Manley p/n 660-42192
- Head Studs: ARP p/n 070-235-4702 (12-point)
- Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
- Valve Angle: 26° and 4° Intake, 17° and 4° Exhaust
- Angle Milling: .0066' per cc
- Flat Milling: .0050' per cc
- Pushrod Slots: Standard
- Pushrods: Check pushrod clearance with head installed on the engine block before final assembly
- Stud Girdle: Standard, Brodix p/n 158-1230
- Rocker Arms: Standard
- Lifters: Standard
- Pistons: Standard
- Exhaust Pattern: Raised .600'
- Valve Centerline: Standard
- Spring Pockets: May not be cut any larger or deeper than 1.625'
- Accessory Bolt Holes are Drilled
- Recommended Intake Manifold: Brodix HV 2000 (p/n 158-HV2000) / HV 2001 (p/n 158-HV2001)
Accurate Airflow for Heavy BBC Builds
BRODIX BB-2 Plus Series 26-degree cylinder heads are engineered for heavy vehicles and smaller big block Chevy combinations in the 427-509 cu in range, delivering strong, repeatable airflow with a 312 cc intake port and 119 cc combustion chambers shaped for methanol or gasoline to help resist detonation. The 100% CNC-ported design is developed on the flow bench and at the track for consistent out-of-the-box performance, while standard-parts compatibility helps you retain common pistons, intake manifolds, and rocker arms. Raised .600 in. exhaust ports and a raised valve cover rail support improved flow and sealing for serious street/strip and bracket-style builds.
