I've seen A LOT of posts about making HP with a 318-So why is it so ???

To take a 426 and get 425 HP out of it is pretty sad.

no no...425hp at 5000 rpm like the factory rating.
It was at 465hp at 6200 and still climbing but the owner said stop right there![/QUOTE]

I wish I could tell you I know exactly what RPM they test to, but I’m having a hard time remembering if I even had lunch. My guess is it was higher that 6200 but at this point it’s a WAG on my part. At the time I was 7 years old. The HP number always stuck with me, especially after I got to driving age and everybody and their mom had a 500 HP SBC and ive never forgotten that hemi.

And we all know that RPM makes more power. I’d be surprised if they didn’t run it to 7K.