Edelbrock part 2176 Performer intake manifold is designed for street 318 - 340 - 360 c.i.d. Chrysler V8's. This manifold is not for use on marine engines used in salt water. Will not fit 1992 and later Magnum engines. 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.