Holley Aluminum Street Avenger Carburetor 770cfm # HO0-83770Holley Aluminum Street Avenger Carburetor 770cfm # HO0 83770 Holley's Street Avenger series carburetors have been taken to the next level. Street Avenger carburetors are known to bolt on right out of the box, so what could be better than a Holley Street Avenger carburetor? How about one in aluminum? They save weight and look great. The tumble polished aluminum finish will keep its shine for a long time to come or it can be hand polished to a show