Edelbrock part #7520 Air-Gap Dual-Quad-O intake manifold is designed for street 396-502 c.i.d. Chevy V8's with 1975 & earlier oval port heads. This intake stands 7/8" taller than the low-profile C-66-O dual-quad intake and offer performance improvements in the 1500-6500 rpm range. The large runners feature our unique Air-Gap design that separates the runners from the hot engine valley for a cooler, denser charge.. Edelbrock; Intake Manifold; Intake; Manifold; Dual-Plane; Performer RPM; Performer RPM AIR-GAP; 180-degree intake; Victor Jr.; Torker; Torker II; Smal-Block Ford; SBF; 302 Ford; 331 Ford; 347 Ford; Hot Rod; Street Machine; Musclecar; Ford Truck; Ford Bron. Edelbrock RPM Air-Gap Dual Quad Manifold for Chevrolet 396-502 Big-Block V8 with large Oval Port Heads. MANIFOLD; 1965-00 BB CHEVY; OVAL PORT; DUAL QUAD; PERFORMER RPM. Edelbrock Manifold Dual Quad RPM Air Gap BB Chevy Oval Port. RPM Air-Gap Dual Quad Big Block Chevy Intake Manifold. Use Progressive Throttle Linkage Kit PN[7094]. Chevrolet:Big-Block:396 (6.5L)-502 (8.2L). RPM Air-Gap Dual-Quad Intake Manifold. RPM Dual Quad BBC Oval Port Intake. Engine Intake Manifold. Intake Mnfld. { eo : 7in.}. MANIFOLD

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