Replaces factory hold down stud 0n 1929-1953 Chevrolets. Length is 6 9/16". Threads into 3/8" X 16 tapped hole in head under rocker arm assembly. Top 2 1/2" of stud is threaded 3/8" X 24. These are slightly long for a G.M.C. 270 or 302 but can be used. Will also fit models of Ford six and International inline six. We can send these by Priority Mail. $5.00 each stud. Part number PVCK1S
