Overview Reviews Product Description 300-218 Holley EFI Holley Hi-Ram Manifold Top - 1 X 92mm GM LS Throttle Valve Top 1 x 92mm GM LS Throttle Valve Top Only-Bolt up through design (Threaded mounting holes) Product Videos Custom Field Product Reviews Write a Review Write a Review × 300-218 Holley EFI Holley Hi-Ram Manifold Top - 1 X 92mm GM LS Throttle Valve Top Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *