SAR/BRODIX BB-5 390CC MAX FLOW MARINE HEADS

Designed by Sonny's (Manufactured by Brodix) At SAR all head porting is done in-house. We use a state of the art 5 axis CNC vertical machining center, which can produce precision work to programmed "blue print" specs. These BB-5 aluminum heads are the largest intake port BBC head casting available with raised intake ports recommended for 540 cu. in. and larger engines, with capabilities of sustaining 600+ cu. in. Other features include, replaceable bronze guides, valve sizes are 2.300" x 1.920" for supercharged applications and 2.350" x 1.900" for N/A applications. Custom Sonny's heart chamber design is also incorporated in this cylinder head. Peak Intake flow: Short 418 cfm @ .800" lift @ 28" H20 405cfm @ .700" lift @ 28" H20 Long 401 cfm @ .800" lift @ 28" H20 383cfm @ .700" lift @ 28" H20 Peak Exhaust flow: 303 cfm @ .800" lift @ 28" H20 295cfm @ .700" lift @ 28" H20