Discussion in 'V8 Discussion' started by patrick hubbard, Aug 22, 2019.
How much horse power does our cars make. I have been told 140 at the wheels. It feels like more.
It was listed as 235 at the crank new so I would guess-- IIRC it would dyno about as much as the v6 auto cars so maybe around 180-190. At this age who knows? You could always dyno it and get an idea
look at some of this https://shoforum.com/index.php?threads/dyno-archive.49020/
Back forever ago after all my mods were done mine dynoed at 204.7 hp at the rear wheels. Of course, that was almost 20 years ago. I doubt it makes that much these days.
I was looking forever to find a rwd SHO
We also not forget that hp calculation changed around 2004-2005.
Cars produced before these years have more power (a bit) than listed if we take consideration with the new calcul.
I was aware of this but it's only this week when I was watching a video on which used sports cars are the best buy on youtube that I learned more on this. The guy spoke about the Mustang Cobra "Terminator" of 2002-2003 and was speaking about the specs of this car and said it was first rated at 385 hp but with the new formula, it was now at 405 hp...
The ratio is a 5,52% bonus hp. If the same ratio can be used, then a new 1996 SHO can have 248 hp stock !
*(237 hp for the 97 to 99 years)
Ops. My error. I guess I am so old I just regularly think 'rear wheels'. It was a front wheel measure on the dyno, rather obviously.
Which brings up an interesting question, as I have never taken the 911 C4S to the dyno: how do they measure an all wheel drive vehicle that alters its power to the wheels dynamically? Does anyone know?
Depends on the Dyno. Some can only measure one axel. Some cars have issues when using a dyno if they have all wheel drive, even if the dyno supports it and have to disconnect the rear.
Interesting. Thank you. I have only had two AWD coupes, a '91 Talon TSI (really a Mits Eclipse) and now the '10 911 C4S and I have never actually taken either to be dynoed as I did not modify either. I have just assumed the numbers from the manufacturer are at least pretty close. IIRC the Talon was claimed to have 200 hp and the 911 in the form mine has says 408. Quite a difference between the two in the almost 20 years between them, considering they have about the same curb weight.
Also makes a difference as to how old and/or the way it measures. Dynojet, Dynapack, & Mustang are ones I know of, but think there has recently been another one released. If you do dyno your vehicles, do them on the same type. Different types will have different values based on how they measure. Some smog shops use a dyno to simulate real world emissions.
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