Holley EFI 300-620BK Holley EFI Modular Lo-Ram Intake ManifoldIntake Manifold Holley EFI Modular Lo Ram Intake Manifold Holley EFI Modular Lo Ram Intake Manifold; Upper; Top Feed Cast Black; 9. 07 in. w o Intercooler Front Height; For Use w GM LS1 LS2 LS6; SPECIFICATIONS: Engine Make Size: GM LS1 LS2 LS6 Number of Carbs: None; For Fuel Injection Position: Upper RPM Range: 7000 8000 Usage: Street Hi Performance WARNING CA Proposition 65: No FEATURES: For Forced Induction Engines With Peak Power At 7000 8000 Rpm