[Chevelle-list] 396 Block

[RJ Winkler]

Hey guys,             I recently picked up 2 396 blocks to go have checked out at a machine shop.  They both are 3999290 castings with suffix codes CTB.  Works out to be a 1972 402 in a Chevelle, impala, or one other I cant remember.  Anyway, I was wonder what your thoughts might be on whether or not its worth buying one of them.  I’ve heard blocks after 1970 or 71 have a lower level of nickel and crack easier?  Is it worth having the machine work done to one and build up an engine with it or should I look for an earlier block?  Thanks –RJ