I have an 86 460 carbed and I wanted to know what specs are available. Specifically what the RPM power range is. I have a C6 auto tranny behind it and the engine idles at 1000, and the C6 I believe has three (3) gears in it so at the top gear around 65MPH it runs around 5000 rpm. Is this normal? This is my first big block ford that's why I'm asking. Biggest prior to this was a 302 and that motor would be screaming.