The BB-2 is the most common Brodix big block head. This head is recommended to be used on a 427-509 engine with at least 12:1 compression. The BB-2 has ductile iron seats with solid phosphorous bronze guides that are replaceable. Has a strong rocker boss and may be milled for a Jesel shaft system. All standard parts such as rockers, valve covers, intake manifold and pistons may be used. Longer head bolts or 10 longer head studs must be used! The exhaust ports have been raised .600'' higher than stock. May be angle milled to 108cc's or angle machined to 98cc's. Features: *Completely CNC Ported to its Maximum Potential, Eliminating Any Hand Finishing. *355cc Intake Ports *119cc Combustion Chambers *2.300'' Intake/ 1.880'' Exhaust Valves *1.625'' Roller Valve Spring, 240 lb. @ seat, .700'' Max Lift *1.625'' Titanium Retainer *10° Jumbo Valve Locks *11/32'' Valve Seals *Accessory Bolt Holes Drilled *7/16'' Rocker Studs, .250'' Longer with 3/8'' Guide Plates *26° x 4° Intake Valve Angle, 17° x 4° Exhaust Valve Angle *Pushrod length is 8.250'' Intake and 9.250'' Exhaust |
