4 bolt block. Standard bore. Date is Oct.68. Suffis is HN.

WOW thats the build month of my car :D but I already have a 3932388 - 4bolt block now. If its been checked and in good condition my guess would be $750 but I really dont have any background to place much weight on my ideas of value on a block. Just a total guess on my part.

I recently sold a standard bore March 69 cast HB coded 388 4 bolt block for $350.