I'm currently installing a 261 out of a late 50s car into my 61 1/2ton 4x4 Carryall.The original engine was a 235.I just realized that the bellhousing is different.Are the timing marks on the two bellhousings the same?Will I create any timing issues if I use my original b.housing on the 261?Are there any other differences I need to consider when doing this swap?
