It was factory rated at 290@5800rpm, car mags calculated from performance that it actually was about 350 at 6500 or so rpms.
93-97 z28 camaro's have 275 stock horsepower at the crank, not RWH.
It has 275hp stock
305
245 horsepower
190 horsepower stock
Depends on what year Z28 you're referring to...
310 horsepower 325 horsepower
200 wrhp stock
190 hp
285
305 hp
310