If it was a carb you wouldn't have a chip in it. The chip is for the fuel injection and timing. Dynamo? I am assuming you mean dynomometer or dyno for short and in which case 305 hp is not alot at all mu stock ls1 did that. Your gearing would not allow 175 mph maybe the screen said that but it just can't happen. I understand that you had a cam and heads but it is a 305 and it is a conventional small block. It won't make much past 6-6500 max and even then doubtful. We are car guys here and understand how things work.
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2000 SS Procharger
98 Z vert turbo
07 TB SS cai catback and tune
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