COLLECTEUR D'ADMISSION V8 5,7L VORTEC 4 CORPS

Performance manifold for GM 5.0L/305ci & 5.7L/350ci Vortec Marine engines in IRONIntake manifold is secured to heads with 8 bolts. This manifold is a perfect performance upgrade for Mercruiser and Volvo engines with both two and four barrel carburetors. Two barrel applications require a carburetor upgrade. Manifold is set up with 4 barrel square bore bolt pattern.Intake has a brass coating that protects areas where sea water flows for ultimate protection against salt water damage.A new carburetor and this performance intake manifold can boost engines up to 30 horsepower.