firehawk933

I'm going to have my stock 2002 Firehawk M6 dyno'd for a baseline before I start my mods, Any ideas what I should expect?

Rotzy

310-320

Just dyno'ed mine. Only mod was a gmmg exhaust. They ranged from 315-319hp and 330-332tq.

firehawk933

Thats a little surprising, I saw a dyno sheet for a 2001 Camero SS which was rated at 320hp that dyno'd at 311hp and 332tq. With are cars being rated 25 hp more than the SS I figured ours would run Higher

Rotzy

I wasn't surprised at all. With the exception of the lid on the 2002's and the gmmg exhaust, they're basicly the same. I think we all know gm underrated these engines (320-325hp???). I'd bet SLP's hp numbers are closer to accurate (335-345).

What's the conversion factor for getting engine hp from RWHP?

firehawk933

So I could have saved $5000 and got an easy to get SS? Maybee the next SS owner I run into I should congratulate for being smarter than I was and not falling into the firehawk trap.

Rotzy

Hey man, I'm just saying it the way it is. Lets face it, there's only two items that slp installs on the car that will add HP; the lid and the exhaust. And, for most vehicles, that combination (without tuning) is not going to produce 20+ rwhp over an SS or WS6.

Ackattack1

iTrader: (7)

You could have saved about $10k, got a z28, spent $400 in mods (lid and exhasut) and had the same hp.

Of course that wouldn't include the upgraded suspension and wheels, but if hp and 1/4 mile are your only concerns that is the cheap way to go.

IntenseSS

depends on a dyno jet or a mustang dyno

Dawg One

Very, very true. In my experience, with an educated operator, a Dyno Jet is going to give you a much more accurate output than a Mustang. The technology is completely different. The Mustang (brand, not car) dyno uses resistance, with your rear wheels setting in between two rollers and the apparatus applying brake pressure to measure resistance. The Dyno Jet is one single roller driving the rear wheels and in my experience has delivered much more accurate readings.
Of all the people I've seen post on the net, a Dyno Jet result will give a much closer spread between HP and Torque. People (and I know a few locals... ) who have dynoed with a Mustang seem to have an exaggerated and much wider spread between HP and Torque.
I dynoed my Firehawk when new and no mods and got 305 RWHP and 320 ft./lbs torque. Since then, I've completely changed my exhaust from cats back and know it's more, but there are few places to dyno 'round my parts that know what they're doing. I actually did my base runs at a Ford Mustang Performance shop the first time around...

68birdls1

iTrader: (46)

hey man, you need to be happy with your firehawk, because unlike the camaro, you firehawk is a numbered car. that means it will keep its value, and will be worth more than a camaro ss. just look at it as an investvestment.

bascam1

i just dynoed mine, a stock 02 ws6 @326 ponies and 356 lb of torque no mods
these are rear wheel numbers

Rotzy

Congratulations. Those are great numbers, but certainly well above the norm. what type of dyno was that?

Seems like a bit split between hp and tq numbers for a stock car.

Dan

iTrader: (1)

That 356rwtq sounds a bit high?

Angus

iTrader: (2)

I did 320HP at MTI with an A4 and 1800 miles on the car. Don't remember the TQ #'s.

Ta's02Ws6

i made 350rwhp and 348rwtq with just a slp lid! and it was a dyno jet,but congrats on your numbers!

Spl170s

iTrader: (8)

Mustang Dyno i ran on claims 260-265 rwhp on stock LS1's consistently, they dyno before mods... i only produced 340 rwhp and 408rwtq on the dyno with bolt on's, G5X2 cam, full LT exhaust and intake mods. Was overly dissappointed with the numbers, but my car ran extremely lean also. So, i still have some bugs to work out.

ataylors

iTrader: (2)

Ah, you got this backwards, a dyno jet always reads higher because they have no way to compensate for the weight of the car. Plus dyno jet doesnt even truly measure torque, they only calculate it. Honestly a Dyno jet is a really fancy Gtech-Pro.. The Mustang dyno is far ahead, thats why they are making add ons for Dyno jets to be able to apply load like the Mustang does. Also only the smaller Mustangs have dual rollers. The only thing you can really compare when dyno'ing is to your ohter runs, all dyno's will read differant. If you dyno on a Mustang you should also ask when they last calibrated it. Dyno Jets dont need to be calibrated because they dont really measure.

demonspeed

iTrader: (7)

That's funny, I have a number too... right from SLP

who cares?

FWIW, my SS put down 303.5 rwhp and 319 rwtq bone stock with 12K miles. That's a 2000 with the "miniscule" 320 rating.