SCs are not the fastest 911s they ever made, (or the slowest, by a longshot), when I first got mine it was the slowest one I'd ever driven. I bought it anyways 'cause it had good compression and sounded right, I knew that it was a matter of tuning. Since that time I've gotten it running a lot better w/o much effort, and it is about to get a minor rebuild, (studs, resealed, SSIs, cams, etc.), after which I am expecting some pretty decent thrust and torque, all the while getting 20+mpg on 87 octane and being one of the best driving cars ever made, IMO.
I have driven quite a few of them over the years, worked at dealer in the '80s, even stock when running right they do not have massive torque, but can be quick. Especially off the line and in their sweet-spot, ~3-5000rpm. His car needs to be checked out, IMO.
