Edelbrock part 2191 Performer 440 intake manifold is designed for street 413 - 426 - 440 c.i.d. Chrysler V8's that measure 8.75 across block. Will not fit 1962 - 64 Max Wedge heads. Edelbrock's Patented Dual - plane, low - rise design with a 180 - degree firing order greatly improves torque over a wide rpm range for excellent throttle response from off - idle through 5500rpm. This Performer intake manifold is ideal for passenger cars, trucks, 4x4s, tow vehicles and RVs.