well they say the 3.3 can rev up to 50,000 rpm before exploding and mine flies at full throttle. My defense earlier was claiming its the most powerfull small block. I firmly believe that and I will even come back for a race to prove that. I must have gotten the 1 out of 20 that work i guess. I dunno. It idles really low and never fluctuates, runs lower 200's, never misses on power. I never owned an engine so reliable and fast. For small blocks I definatly think its the #1 engine of choice IMO.