Those are pretty stout numbers from a gen 1 or 2 with out even a LT header. Dynos are dynos after all. Which cams were those? Generally for track you dont want to give away too much bottom end.Mine made 447 rwh on the dyno a good day with stock heads, cams, exhaust manifolds and cats on 93 octane. I think you could get to 470 with headers, ported heads and cams.