I have a 92 camaro b4c (police interceptor) tpi 305 speed density. i bought it when i turned 18 rode it to hard spun a rod bearing i took it to the shop and they put the stock z28 back in it they didn't know that in 92 they had two differant 305's that year well either did i (they put the smaller cam in it and 1.5 rockers) when i got it back it starts right up then about two min after running it starts lopeing really bad then dies. and when i drive it i will start doing it and try to die when i'm driving and when i'm driving at one constant speed the check engine light will come on. i have talked to a bunch of people about it they all tell me its not the cam i just figured i would put it back to what the computer wants and if i still have the problem go from there. sorry about the long story. doe sanyone know what it is. please help me out the car was bad fast for stock when i got it now its slow i lost a lot of power

 

What Check Engine code is it throwing?

 

ECU.

 

well i found out my oxgen sensor is bad so i'm going to replace that then see if it fixes my problem