How fast should a stock sc be able to go?

[911mot]

My 3.2 does 120mph at 6000 rpm.



Then I shift to fifth

[zotman72]

My '8O SC has seen 135 mph in the middle of nowhere Utah no problem. YMMV

[Rick V]

142. Redline and used my GPS to log the speed. That should land Ya in jail in any state. I was a dumba$$ for doing it on the public interstate in the first place.

[RarlyL8]

My '78 with SSIs topped out at a corrected 140mph @ 6500rpm all day long. It did 140mph with the stock body and with the widebody conversion. The (stock) 915/61 gearing was perfect as the engine was running out of juice at the same time it hit red line.

[Two Tone]

I posted the following in an earlier thread on the same question:

My '77 S with a 3.0 will do exactly 146 real mph (GPS). In my case its most definitely rpm limited, not horsepower. If I wanted to go past the red line I know it would break 150 but I don't see the need to be that hard on my 30 y.o. car for the sake of 3mph. The car does this easily and while it feels a little light in the steering (no spoiler or tail) it isn't scary. Noisy, yes, but not scary. Based on my own car, I find the other claims of top speeds in this neighborhood totally believable.

[K. Roman]

I took my 996TT 175. My 80 SC about 120.

[Brother]

139. Ops tested in targa with 170,000+ miles on it.

Look at the transmission chart in the owners manual or in Bruce Anderson's 911 handbook.

[Drdogface]

140 + for my 79 SC... I backed off before it was done..

[Joe Bob]

My SC did 132 indicated at Willow Springs. A recent GPS survey found the gaugeto be reading low by 10mph above 70.....

My new 964 speedo gauge is spot on....

[N11Porsche]

My 1979SC, with 180K, has seen 130 mph and was short of being at red-line. I have read the Porsche speedometers read on the optimistic side.

[N11Porsche]

I've read that the Porsche speedometer's read very "optomistic". With that in mind, I took my 1979SC to 130 mph and it wasn't at redline, but close.