5913 head casting is 54-55. 848 came in 56 and up. The distributor pad stamp supports a towanda block built 54. The year on the block, the casting date pad looks, like an 8 in the photo but i will bet is a 3, so December of 53. Factory retooled like august september, so this would be a motor built for the 54 model year.
Last edited by Dragsix; 04/04/2022 3:39 PM.
