Fair few versions of that engine, so depends on the whole of the mods etc.

But the 60s 327s wernt bad, depending on the heads/cam/manifolds/carb etc etc

Some were well over 350bhp/350lbft as standard, but there are plenty of versions and heads so hard to know if its a lightly hotted up 250bhp one thats shagged, or a mint top model modified to be even better.