Edelbrock SBC Performer Eps ManifoldEdelbrock part #2701 Performer EPS intake manifold is designed for 1986 and earlier 262 400 cubic inch Chevys. 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. With that the Edelbrock Performer EPS intake manifold has a runner design that's "tuned" for peak torque at 3500 rpm on a 350 inch engine making it ideal for power from off idle to 5500