Set of 4.030 bore size Hastings Cast Rings for Small Block Chevy & Ford as well as other 4.030 diameter bore applications with 5/64 5/64 & 3/16 rings lands.  For blocks bored +.030 over size or 4.030 Bore diameter! If you need a different over size, we have these same rings in other sizes. Please message us the size needed to verify availability before ordering.