<font color=purple>This is the exact cam I have in my racer, so I think I can comment here [img]/wwwthreads_images/icons/smile.gif[/img]. Personally, this is on the upper end of what I'd consider for a daily driver. It will definitely have some rumpety rumpety to it & should be paired with the Performer RPM intake and some decent heads for best results. Vacuum, I'm not sure. If I had to guess, you'd be pulling somewhere between 13-16" vacuum (again, strictly a GUESS) with this cam at idle - should idle around 1,100.
You really should be regeared and/or running a bit of stall (~2k-2,400) with an automatic, but might be able to get away with it in a stick truck if you're geared low (you have 3.08's right? - not so good for this).
This is a healthy cam. With the right intake, carb, & heads, a 9.5:1 350 will put out 420HP with this cam. That's pretty damn mean for a street-driven truck IMO. If it were me, I'd do it if I had something else to drive. But, if it were my only truck, I think I'd be looking at the Performer cam & intake instead of the Performer RPM.
BTW, for anyone else with an opinion, the full specs on this cam are:
[img]/wwwthreads_images/icons/wink.gif[/img] Got Mud?
G.U.M.B.O. Mud Racing