Performer manifolds are dual-plane low-rise intake manifolds with a 180+ firing order and patented runner design that you wont find on other brands. This patented design greatly improves torque over a wide RPM range especially off-idle through the m id-range. Throttle response is excellent. Performers are ideal for passenger cars trucks 4X4s tow vehicles and RVs.There are EGR and non-EGR versions available for most GM V-8s. Most performer intakes are 50-State street legal when used with the corre ct carburetor and in the correct application.Designed for street 1967-85 350 and 403 Oldsmobile V8s. This manifold is a stock replacement/street legal part for 1967-72 350 and 403 V8s with 4 bbl and without stock EGR or 1972-85 350 and 403 with stock EGR except 1976 with back pressure EGRs.
