Hey smart engine guys... can you help me?

Couldn't tell you the specs on that cam but in 1968 ALL 340 4speed cars got it. Automatic cars got the regular 340 cam, as well as all 340's from then on. Seem to remember that it was around 8 degrees bigger that the regular 340 cam. As far as engine weight, if you want that big block, use a 383-400 block and stroke it. to get the seight down, use an alloy waterpump and housing, master cylinder, mini starter, aluminum heads and intake, etc. and the front end of that Cuda will weigh less than the original 340.