The Edelbrock Performer 2-O #3761 EGR intake manifold is designed for street 396-502 c.i.d. big-block Chevy V8's using general duty oval-port cylinder heads. Will not fit under hood of Corvette without hood modifications. Will not fit "tall block" V8's. May be used with OEM or aftermarket carbs. Will fit 1965-90 oval port heads.