8125 Weiand Street Warrior Intake - Chevy Small Block V8. Street WarriorT Intake Manifold 283-406ci, 1955-86 and 1987 & later with aluminum heads. All new, optimized design for today's higher output small block engines. Port Size: 1.84" height 1.12" width.Idle to 5,500 RPM band. Universal dual pattern carb flange accepts spread bore (Quadrajets) and square bore carbs. Runner geometry optimized using Computational Fluid Dynamics software for even fuel & air distribution. So we have a chance to make it right - we want your repeat business! Check out the official Holley Performance.