Air Flow Research is excited to announce their new 18-degree Magnum Series intake manifolds. These manifolds are ideal for 540+ci big-block Chevy race engines with high airflow requirements. Every Air Flow Research intake manifold is cast and machined on computerized machining centers here in the United States. AFR designed the new Magnum manifolds to run “as cast,” with plenty of material to have your manifold CNC-ported. They also recommend using their AFR 6880 Intake Gasket with the 18-degree Magnum intake manifold for proper port alignment. There’s more info at airflowresearch.com or you can call them at 877.892.8844.