Designed for street 429/460 c.i.d. Ford V8s. #2166 is stock replacement/street legal part for 429 & 460 V8s with OEM 4-bbl. carburetor with electric choke; 1968-72 (1973 non-CA); except stock equipped EGR. #3766 is stock replacement/street legal part for 460 V8s with OEM 4V carburetor with electric choke; 1979-87. Will not fit 429 Cobra-Jets or 1966-68 462 Lincolns and will not accept stock spread-bore carb. Will not fit 1988 and later models. #3766 cannot use #8714 to block-off EGR. Must use stock EGR plate. Edelbrock Performer 460 Intake Manifold 2166 Cast Finish - Non-EGR - Idle-5500rpm - 68-87 Ford 429-460 - For 4 bbl Carbs w/Elec Choke - Except Cobra Jets - Street Legal - Street/Hi Performance Use OnlyFor Idle to 5500 RPM Street-Driven PerformanceDual-Plane Low-Rise Intake w/180 deg. Firing OrderPatented Runner Design Ensures Broad Torque CurveExcellent Throttle Response and Mid-Range PowerAccepts Late-Model Choke; Waterneck; and HEIAccepts A/C And AlternatorAccepts Exhaust Heated ChokesPit Stop USAoffers Edelbrock Performer 460 Intake Manifold 2166 at low everyday prices. Be sure to check out all of the products from Edelbrock including Edelbrock Engine Parts and Accessories, Edelbrock Intake Manifolds, Edelbrock Intake Manifolds - BB Chevy, Edelbrock Intake Manifolds - BBC.