The Mustang Forum for Track & Racing Enthusiasts

Taking your Mustang to an open track/HPDE event for the first time? Do you race competitively? This forum is for you! Log in to remove most ads.

  • Welcome to the Ford Mustang forum built for owners of the Mustang GT350, BOSS 302, GT500, and all other S550, S197, SN95, Fox Body and older Mustangs set up for open track days, road racing, and/or autocross. Join our forum, interact with others, share your build, and help us strengthen this community!

Anyone dyno'd a Boss 302 yet?

steveespo

Lord knows I'm a Voodoo Child
Moderator
3,752
1,223
Exp. Type
Time Attack
Exp. Level
10-20 Years
NY Metro
Has anyone here put their car on a dyno jet. Just ran my 2011 GT with Boss manifold, Steeda CAI and Brenspeed tune and got 403 HP/357 TQ. Car made peak power from 6800 right to 7300. really awesome. Would like to know what a stock Boss puts down and what may be on the table with a tune/mods.
Steve
 
steveespo said:
Has anyone here put their car on a dyno jet. Just ran my 2011 GT with Boss manifold, Steeda CAI and Brenspeed tune and got 403 HP/357 TQ. Car made peak power from 6800 right to 7300. really awesome. Would like to know what a stock Boss puts down and what may be on the table with a tune/mods.
Steve
I'm guessing it RWHP, since the GT is 412 stock?
 

steveespo

Lord knows I'm a Voodoo Child
Moderator
3,752
1,223
Exp. Type
Time Attack
Exp. Level
10-20 Years
NY Metro
Yes that's SAE corrected 403 hp at the wheels. 3.31 gears pulls were in 4th and 5th gears and were 402, 403, and 404. Stock on the same dyne the car was 369/347. With a tune and CAI it made 382/350. Boss manifold was good for 20 hp. Next up is 3.55s with a Torsen T2, then long tubes and high flow cats/larger pipes. There are cars making 445 at the wheels with that combo. Coyote and Roadrunner motors are the real deal.

Someone has had to have a Boss on a dyno, maybe when I get my '13 (real one!)

Steve
 
I'm waiting for the Trackey because I want to see the difference. The local Mustang tuner, best on the peninsula was drooling all over my car. He can't wait to dyno it.
 
Yes I had mine dyno'd with just the plates removed from the side pipes. It put down 404.5rwhp & 349.74rwtq SAE at 80F with the hp climbing all the way to redline. For comparsion my 11' GT 3.73 6m car put down 379.96rwhp & 364.59rwtq SAE at 72F. The GT's power had peaked at 6400rpm though where the Boss made power all the way to 7500rpm. The GT had 470 miles on it and the Boss had 770miles on it when they were dyno'd.
 
GotCurvz said:
Yes I had mine dyno'd with just the plates removed from the side pipes. It put down 404.5rwhp & 349.74rwtq SAE at 80F with the hp climbing all the way to redline. For comparsion my 11' GT 3.73 6m car put down 379.96rwhp & 364.59rwtq SAE at 72F. The GT's power had peaked at 6400rpm though where the Boss made power all the way to 7500rpm. The GT had 470 miles on it and the Boss had 770miles on it when they were dyno'd.

Yes Very nice. That would be about 470 to the flywheel. That is sweet!
 

ufnavy06

Some say he has a tattoo of his face on his face.
ORANGE CRUSH said:
GotCurvz said:
Yes I had mine dyno'd with just the plates removed from the side pipes. It put down 404.5rwhp & 349.74rwtq SAE at 80F with the hp climbing all the way to redline. For comparsion my 11' GT 3.73 6m car put down 379.96rwhp & 364.59rwtq SAE at 72F. The GT's power had peaked at 6400rpm though where the Boss made power all the way to 7500rpm. The GT had 470 miles on it and the Boss had 770miles on it when they were dyno'd.

Yes Very nice. That would be about 470 to the flywheel. That is sweet!

Well have we established a loss through the drivetrain? If it's 10%, that's 445 (385 lbft) which is right on, if it's 15% then it is closer to 465 (402 lbft). I'm all about those #s.
 
had mine Dyno'd today on a Dyno-mite dynamiter. Ambient was 96 degrees. According to shop tech we are looking at 17% drivetrain loss. My Boss made 369 RWHP / 341 RWTQ....

I'm thinking something had to be wrong with the set-up they had. A stock 5.0 GT went after me and put down 362 RWHP so WTF??

SRPerfDynoRun_Boss302.jpg
 

TMO Supporting Vendors

Latest posts

Buy TMO Apparel

Buy TMO Apparel
Top