ZL1 Tested vs BOSS
#281
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That doesn't mean they are telling the truth. The 03/04 (I know, old to bring up) Cobras would dyno at the wheels what Ford rated them at the crank, just like F-bodys were underrated, and lots of other cars. The reason it might be underrated is the 2010+ 5.4L with that blower and at 15 PSI is good for right around 650whp(like was said earlier in this thread). So it's either a tune away from making big power, or is already making more than they are saying.
Either way, if someone would have told any of us 10-15 years ago that the top dog Mustang would be making 650hp stock and top out over 200mph, we would have told them they were ******* crazy.
Either way, if someone would have told any of us 10-15 years ago that the top dog Mustang would be making 650hp stock and top out over 200mph, we would have told them they were ******* crazy.
If a new car receives the current SAE certification it is not under rated. Period.
Some ls3 camaros have dynoed 39x rwhp stock...some have dynoed as low as 35x. It is dyno variance etc.
#282
so this from motortrend is whp, or chp?
2011 Mustang 5.0 (4th gear pull, 15% powertrain loss)
Claimed horsepower: 412 hp @ 6500 rpm
Claimed torque: 390 lb-ft @ 4250 rpm
Actual horsepower: 435 hp 6500 rpm
Actual torque: 404 lb-ft @ 4400 rpm
i thought they rated at the crank, but the way they phrase that it looks like whp.
2011 Mustang 5.0 (4th gear pull, 15% powertrain loss)
Claimed horsepower: 412 hp @ 6500 rpm
Claimed torque: 390 lb-ft @ 4250 rpm
Actual horsepower: 435 hp 6500 rpm
Actual torque: 404 lb-ft @ 4400 rpm
i thought they rated at the crank, but the way they phrase that it looks like whp.
#283
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so this from motortrend is whp, or chp?
2011 Mustang 5.0 (4th gear pull, 15% powertrain loss)
Claimed horsepower: 412 hp @ 6500 rpm
Claimed torque: 390 lb-ft @ 4250 rpm
Actual horsepower: 435 hp 6500 rpm
Actual torque: 404 lb-ft @ 4400 rpm
i thought they rated at the crank, but the way they phrase that it looks like whp.
2011 Mustang 5.0 (4th gear pull, 15% powertrain loss)
Claimed horsepower: 412 hp @ 6500 rpm
Claimed torque: 390 lb-ft @ 4250 rpm
Actual horsepower: 435 hp 6500 rpm
Actual torque: 404 lb-ft @ 4400 rpm
i thought they rated at the crank, but the way they phrase that it looks like whp.
two..that was just their guesstimation going on the rwhp numbers. Nothing but a guess. The motor is SAE certified under the revised 2007 standards at 412hp. It will make within 1% of that. The reason the 5.0 dynos more or less the same as an ls3 camaro is because it is not turning an irs or 20 inch wheels.
#284
i wasnt giving too much weight to their claim of 435. just as chevy wouldn't step on the corvettes toes with the camaro, i think ford won't step on the boss's toes with the gt.....and if the gt truly made 435, then either it'd be too close to the boss, or the boss would be way under rated.
#285
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i wasnt giving too much weight to their claim of 435. just as chevy wouldn't step on the corvettes toes with the camaro, i think ford won't step on the boss's toes with the gt.....and if the gt truly made 435, then either it'd be too close to the boss, or the boss would be way under rated.
I tell everyone this from time to time. Do some google research on the new SAE standards. You will then laugh at all the threads of people talking about under rated cars that are 2007-2008 and newer. It is nothing more than dyno variance. Hell....my car dynoed 7rwhp different on back to back pulls on the same dyno. A chassis dyno is a horrible way to guess a cars crank hp.
#288
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I'm saying it's detuned for the boost level it's at stock. You don't add .4L of displacement to a motor and make ~75-100hp less, as the 5.4L with just the new blower at the same boost makes 650 at the wheels, unless they aren't really making 15lbs of boost like they said.