I have a 1995 lt1 z28 with a t56 its got as far as I know nothing done to it except an slp intake ineed some advise as to what to do it wont rev over 3500 half the time acts like its spark knocking or somthing an has no power when it does and doesnt do it.... should I try and build this motor or should I swap it to an ls type motor any advise would help just background info im in michigan and would like around 550/600 hp/tq

 

I think fixing your problems first is a better start than jumping ship and seeking 550 HP....

You will need boost or spray and forged internals to reach that goal.

 

Sounds like your opti could be bad, any codes? Sounds like you need to do a shitload more reading if your asking for 550 hp. What's your budget? I hope it's $20,000, it takes more than just an engine for that much hp, need a trans, a rear, suspension, etc etc.

 

I'd try to make sure all your plugs and wires are in good, did you change them recently or are they old? Same for your opti, it might be going bad on you.