This GM 4-71 / 471 2x2 blower top plate is designed to fit a pair of two barrel carburetors atop a GM 4-71 supercharger. Originally utilized on the old Detroit diesels, these superchargers have been a favorite of hot-rodders since the 50s! Carburetors are spaced 4.800 inches apart on center utilizing 5/16-18 threaded holes for mounting. This piece is cast of A356 aluminum, and cnc machined. Made in the USA. Carburetors and supercharger not included.
