Streets,
the 327 is not the original engine, when my father purchased the car use it had the 327 in it. But it is a Super Sport and not a clone, i need to look up the vin number and see which of the 396 engines it came with. When the 67 Chevelle SS was produced it came with a 396 with three different horse power sets, one at 325hp, 350hp, and at 375hp. I believe the vin number should tell which model it was.