Chrysler Mopar BB 413 426 440 HiRise Aluminum Intake Manifold [Satin] that have a 4bolt pattern

that have a 4bolt pattern

Speedmaster axle stubs are machined from solid billet 4340 material

and header clearance

Couple this Hi-Ram intake with the high flowing LS3 style cylinder heads has outstanding potential for naturally aspirated and forced induction applications

Manifolds are cast from steel molds

Chrysler Mopar BB 413 426 440 HiRise Aluminum Intake Manifold [Satin] that have a 4bolt patternStep up to the high rpm power of an open plenum with Speedmaster HiRise intake manifolds. These cast aluminum manifolds accept square bore carburetors and are pressure tested to ensure maximum performance. They start to make awesome power around 3,000 rpm.