N/A or forced industion? I used to run a 8# blower on my 94 LT1 making 415 rwhp and never blew it up, but I'd say that was alot for the stock bottom end. Weakest link were the stock pistons which would blow up with too much boost or N20, also opti's were a weak point. The 95+ had a vented unit which was supposed to be a better design.
93-95 F-body LT1's were 275 hp
96-97 F-body LT1's were 285 hp
96-97 Ram Air/SS LT1's were 305 hp
92-96 Vette LT1's were 300 hp
96 LT4's were 330 hp
lots of info on:
www.camaroz28.com