This is a new base plate assembly for all 1961-66 Tri-Power end carburetors for Pontiac GTO LeMans Tempest Grand Prix and Bonneville. Also works on 1966 Oldsmobile Cutlass Tri-Power with 400 engine and Pontiac models with 326 389 400 421 428 455 engines. Comes as a complete die cast base assembly with throttle shaft butterflies and linkage return springs. This base plate is for front or rear carburetor and if using power brakes you will have to drill and tap the base plate for your vacuum fitting. Replace your old worn out base plates with this great reproduction.base plate assembly with this great reproduction. {specs}.
