there should a small indintion on one of the teeth on the cam shaft like it was hit with a punch and one on the teeth of the cam gear that looks the same but on the cam gear there isnt one on both sides on the cam gear so you might have to flip it over
so i came across a flat head engine gold mine i think i have 5 blocks now 3 of which are good 5hp blcks and 1 needs to be bored over and the other one is a 3 hp engine and all in pretty good shape just missing some parts here and there
OK so besides the cheap project im doing im actually thinking about investing the money and buying a good block and building an actual racing engine so where and what would u recomend starting