I have to tend to agree with this. The 417 I currently have is a good running engine. Runs on 91 octane and will run 10's all day day long. Besides a low 8 second 3rd gen turbo Hemi Dart, I am the only one in my local group that has a small block and it's actually the fastest of our street cars. One car is a Trick Flow headed 440 Dart, another with a 505" with 440 Source heads in a 330, and a 512 Challenger with Eddy heads. They're always shaking their heads in disbelief that this little small block will pull on them. Don't ask me why. The combo just works.