I have an 86 IROC, the engine has 92k on it, i have added edelbrock headers and a flowmaster, other mods include a Summitt Cam 214/224, a double roller timing chain, HEI Dist. and a small pulley on the crank. I was wondering if anyone had an idea of how much HP this will put out, i think the stock lg4 of this year put out 145hp while others say 165hp I am not sure?

 

165 stock with carb, not sure about TBI
If you still have the stock heads I'd guess you're up around 225.