Boss 302 on the dyno - 416 rwhp
2/25/11 | 08:40 PM
#1
Thread Starter
Bullitt Member
Joined: October 28, 2009
Posts: 214
Likes: 0
Boss 302 on the dyno - 416 rwhp
Inside Line already put a Boss 302 Laguna Seca on the dyno and it made 416 rwhp:
http://www.youtube.com/watch?v=XonbZwYcIM0
Unfortunately they didn't do a comparison with the regular and TracKey
http://www.youtube.com/watch?v=XonbZwYcIM0
Unfortunately they didn't do a comparison with the regular and TracKey
2/25/11 | 10:18 PM
#3
YESSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
Sounds like the track key from the choppy idle just before they hook up the tow straps
I AM PLEASED
Sounds like the track key from the choppy idle just before they hook up the tow straps
I AM PLEASED
2/25/11 | 10:37 PM
#5
Mach 1 Member
Joined: October 29, 2010
Posts: 953
Likes: 0
From: Florida
My best benchracing says with headers, o/r cat delete/ aftermaket tune/ and intake these things should be 455-475 whp and over 510 at the motor!! Forged internals and 8,000 RPM anyone??
2/25/11 | 11:00 PM
#6
But yes, with some light mods this thing should put down even more power.
I'm gonna (try to) leave the powertrain alone until the warranty's up, though. Maybe.
2/25/11 | 11:03 PM
#7
Member
Joined: April 1, 2010
Posts: 33
Likes: 0
For reference, the standard gt put down 395 hp and 365 tq on inside line's dyno.
So looks like the Boss puts down 10 less ft/lbs and 31 more hp. Considering x% drivetrain losses, I guess it's surprising that both numbers are so close to the power differences ford quotes at the flywheel. Does that mean the Boss gains more HP and loses more TQ than ford says(compared to the GT)?
So looks like the Boss puts down 10 less ft/lbs and 31 more hp. Considering x% drivetrain losses, I guess it's surprising that both numbers are so close to the power differences ford quotes at the flywheel. Does that mean the Boss gains more HP and loses more TQ than ford says(compared to the GT)?
2/25/11 | 11:29 PM
#8
Bullitt Member
Joined: November 3, 2010
Posts: 454
Likes: 0
For reference, the standard gt put down 395 hp and 365 tq on inside line's dyno.
So looks like the Boss puts down 10 less ft/lbs and 31 more hp. Considering x% drivetrain losses, I guess it's surprising that both numbers are so close to the power differences ford quotes at the flywheel. Does that mean the Boss gains more HP and loses more TQ than ford says(compared to the GT)?
So looks like the Boss puts down 10 less ft/lbs and 31 more hp. Considering x% drivetrain losses, I guess it's surprising that both numbers are so close to the power differences ford quotes at the flywheel. Does that mean the Boss gains more HP and loses more TQ than ford says(compared to the GT)?
added torque with an engine that "pulls like a freight train".
2/26/11 | 04:58 AM
#9
AKA 1 BULLITT------------ Legacy TMS Member
Joined: January 29, 2004
Posts: 7,737
Likes: 346
From: U S A
2/26/11 | 05:04 AM
#10
Cobra Member
Joined: January 24, 2011
Posts: 1,382
Likes: 0
From: NY
Originally Posted by phytrpilot
What you state may be true. But at the speeds it will run flawlessly there is no more need for
added torque with an engine that "pulls like a freight train".
2/26/11 | 07:49 AM
#11
Cobra Member
Joined: September 10, 2004
Posts: 1,302
Likes: 0
From: Charlotte NC
Very nice - assuming a 10% driveline loss that means the Boss is making 457 HP at the flywheel - assuming a 15% loss, the flywheel HP jumps to 478. Either way, the Boss is definitely making more HP that advertised which is awesome. Ford has also stated that the Track Key tune doesn't increase peak HP.
Agree with others, there is more potential in this engine. Just a few short years ago, it would have taken some form of forced induction to make that kind of HP, very impressive.
Agree with others, there is more potential in this engine. Just a few short years ago, it would have taken some form of forced induction to make that kind of HP, very impressive.
2/26/11 | 09:23 AM
#12
Bullitt Member
Joined: February 12, 2011
Posts: 364
Likes: 0
From: Knoxville, TN
From Jeff Seaman, Mustang powertrain engineer:
"Are there any changes to the power delivery, such as the torque curve?
Absolutely. From an advertisement standpoint, we are not going to say that the TracKey gets you anything more than the base key. You’re welcome to go find out for yourself – it’s just the flip of a key. The low end torque is improved substantially, again making tradeoffs for basic drivability in order to deliver performance at all cost."
I like to see what Livernois can do with this car. That said I'll probably keep mine engine stock until the warranty is over.
2/26/11 | 10:21 PM
#14
Bullitt Member
Joined: January 21, 2011
Posts: 284
Likes: 0
From: Laredo, Tx
With manual trans and a live rear axle I have usually seen 10-12% considered for drivetrain loss. Putting it around 470 - 500. I tend to think it's closer to 475. Either way too close for comfort for GT500 owners Of course the BOSS has a decent weight advantage.
Of course the BOSS has a decent weight advantage.
2/27/11 | 09:06 AM
#16
Shelby GT350 Member
Joined: November 20, 2010
Posts: 2,382
Likes: 1
From: Sioux Falls, SD
Some have 50% more hp than the Boss and only 10% more weight 
2/27/11 | 09:53 PM
#17
Mach 1 Member
Joined: December 13, 2006
Posts: 850
Likes: 0
2/28/11 | 06:49 PM
#20
Here are the graphs and commentary from their testing:
By Josh Jacquot | February 27, 2011
We barely let the engine cool after the drive down from Monterey before rolling into MD Automotive in Westminster, California and strapping the 2012 Ford Mustang Boss 302 to its Dynojet chassis dyno.
Ford claims the Boss produces 444 hp at 7,500 rpm and 380 lb-ft of torque at 4,500 rpm -- a substantial horsepower gain over the stock 5.0 GT's 412 hp at 6,500 rpm and 390 lb-ft at 4,250 rpm. Ford reengineered just about every piece of the Boss 302's engine so the gain should be substantial. And it is.
A careful look at the Boss' power trace shows it making power all the way past redline. In fact, the fuel cut appears to be about 7,700 rpm -- an astonishing speed for a V8 this size. With coolant and oil temps stabilized, we saw three runs within five peak horsepower of one another. And when you're talking about 415 hp, that's pretty much dead consistent. The lines laid down right on top of each other.
But how big is the improvement relative to a 2011 Ford Mustang GT 5.0?
Big.
Ford claims a 32-hp difference between the peak output of these engines and we measured 36 hp. Perhaps more relevant is torque, which Ford claims to be 10 lb-ft lower in the Boss. Not according to our numbers. Sure, the torque peak comes 900 rpm later, but there are two more lb-ft to be had from the higher-revving engine. Of course, at 4,350 rpm, where the GT makes peak torque, the Boss trails by about 11 lb-ft.
What the data doesn't tell you is how transformational a 900-rpm increase in peak power is between these two engines. At the GT's power peak of 6,650 rpm, the Boss is alreay making 24 additional hp. And it continues over the next 900 rpm to pour on the coals and churn out another 12 hp.
By Josh Jacquot | February 27, 2011
We barely let the engine cool after the drive down from Monterey before rolling into MD Automotive in Westminster, California and strapping the 2012 Ford Mustang Boss 302 to its Dynojet chassis dyno.
Ford claims the Boss produces 444 hp at 7,500 rpm and 380 lb-ft of torque at 4,500 rpm -- a substantial horsepower gain over the stock 5.0 GT's 412 hp at 6,500 rpm and 390 lb-ft at 4,250 rpm. Ford reengineered just about every piece of the Boss 302's engine so the gain should be substantial. And it is.
A careful look at the Boss' power trace shows it making power all the way past redline. In fact, the fuel cut appears to be about 7,700 rpm -- an astonishing speed for a V8 this size. With coolant and oil temps stabilized, we saw three runs within five peak horsepower of one another. And when you're talking about 415 hp, that's pretty much dead consistent. The lines laid down right on top of each other.
But how big is the improvement relative to a 2011 Ford Mustang GT 5.0?
Big.
Ford claims a 32-hp difference between the peak output of these engines and we measured 36 hp. Perhaps more relevant is torque, which Ford claims to be 10 lb-ft lower in the Boss. Not according to our numbers. Sure, the torque peak comes 900 rpm later, but there are two more lb-ft to be had from the higher-revving engine. Of course, at 4,350 rpm, where the GT makes peak torque, the Boss trails by about 11 lb-ft.
What the data doesn't tell you is how transformational a 900-rpm increase in peak power is between these two engines. At the GT's power peak of 6,650 rpm, the Boss is alreay making 24 additional hp. And it continues over the next 900 rpm to pour on the coals and churn out another 12 hp.