In an attempt to share an opinion based on the first post, I do believe that Slughammer engine is a 180 HP smogger 383 from the 70s with a bunch of eye candy bolted to it like, chrome valve covers, headers, tunnel ram....etc. Uncle Tony's viewers are so inept that they hear 383 and think "Road Runner " engine (335 HP) they do not know any better and this is why Tony gets away with his nonsense...these folks dont understand automotive basics so Uncle tonys line of bull sounds like rocket scientist dialogue to them...:)