what can a stock stang beat?

[89 Cobra LX]

Originally posted by 95mustanggt


Really that much? That would mean I shift at 4000 RPM or maybe 4200 (assuming the error as a percentage)?

I don't know. I guess a dyno don't lie none, but I have a hard time believing that.

I would guess the error is a percentage, you're probably shifting closer to 4200 RPMs. When my car was at an idle the Stock tach and the Dyno were within a couple of hundred RPMs.

It sucks that the stock tachs are so far off and it's hard to get used to shifting well into the red, but at least I know what the motor is actually doing. A good aftermarket Tach would be all one needs to accurately monitor the motor, but I always spend the money on something else. Why in the hell are the Tachs in the Mustang so far off? Is it so the idiots that want to shift their cars at 7k can go out and think that's what they are doing?