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