HOLLEY LIST 1850-2 4781 4 Barrel Carburetor 4BBL 6R1717B For Rebuild 2 Barrels move free, a little stiff, the other 2 are stuck, from setting a long time in garage, Dont remember what it come off of, i think Chevy but not sure Look good at pictures you will see other sets of numbers here and there Will need a total rebuild, possibly set in brake fluid for a week to free all parts before dismantling for rebuild, at least thats what i would do in the past when i was a mechanic, i quit in early 2000 because of Health reason, heart attack and 3 strokes so im done '' May be some outside screws missing but cant remember, so PLEASE LOOK GOOD ''SOLD AS IS FOR REBUILD''' SOLID CONDITON, NO CRACKS NO RETURNS