Product Features: 2701 intake manifold is designed for Chevy 1986 and earlier 262-400 cubic-inch. 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 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 rpm. Dyno tests showed From 3000 to 4500 rpm, the power increases averaged 5+ ft-lbs. of torque for more performance where you need it most. Notes:Not fit under the hood of a Corvette Accepts a 4150-Style Square-Bore Carburetor Compatible with Chevy Small Block SBC 262 265 267 283 302 305 307 327 350 383 400 V8 Engine