What is a good 440 cruising/freeway RPM ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

[maxwellwedge]

4000??  God God man, how fast are you going and how short are your tires?

Near 70 MPH - F70-15 Polyglas - I did say near 4000 - probably 3800-3900...Who knows if the factory tach is reading right but it sounds near 4000 as well.

[skip68]

I think I'm going with 3.55's

[mikesbbody]

have a play with this    http://vexer.com/68rt/speed.html

[mikesbbody]

I forgot to say, I have 3.55's in my Charger Auto, 28 tall tires, and it doesnt rev too much on the highway.
I cant say how high because my Tach doesnt work 

[mauve66]

chuck, don't forget to change the speedo gear in the tranny also

[skip68]

chuck, don't forget to change the speedo gear in the tranny also

Thanks Robert.     I need a new speedo cable anyway.  I put a new one in but I messed up and had it against my manifold so it melted.     I just use my GPS to watch my speed.   

[skip68]

    Thanks Mike, I think 3.55's it is.