The Edelbrock polished RPM Air-Gap dual-plane intake for 396–502 ci Chevrolet V8s with rectangular-port heads isolates the runners from hot engine oil to keep the charge cooler and denser. Tuned for up to 6,500 rpm, it features a larger plenum and runners for high-output engines, and includes rear water outlets, distributor clamp locations and nitrous bosses while accepting late-model alternator and A/C brackets for street use.
Edelbrock Polished B/B Chev Rect Port RPM Air-Gap Manifold