approximate on horsepower

i have an 83 camaro 350 w/ straight pipes w/ cherry bombs and it doesnt have a cadalytic converter and its stock other than that....i got this from my grandma and she had a 305 in it stock and my grandpa put a 350 in it without any modifications, im just wonderin about how much hp and tourque it has

the 305 came factory speced at 190 h.p. your average 350 has around 275 hp and 325 torque...exhaust prolly add around 10 to 15 hp with the strait pipes and no cat so work up from there

thanks that helps to know approximate of how much hp i have w/o taking it to a dyno