FIRST DYNO - Looking for Opinions 
FIRST DYNO - Looking for Opinions
autos loss anywhere from 17-20% depending so id figure around 380FWHP based on the stangdyno #s. On an inertia dyno ud have prolly put another est 10-15rw down so then you could say close to 400FWHP. Remember these are estimated #s. Give or take Ur ETs at the track will tell the real story!!!
On The Tree
Joined: Oct 2004
Posts: 109
Likes: 0
From: Yorktown, NY
mustang dynos are more accurate in terms of horsepower, because of the loading bearing, it simulates real road driving. Nice numbers, my stock hawk put out 290 on a mustang, and 307 on a dyno jet...
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Thread Starter
TECH Addict
Joined: Feb 2004
Posts: 2,335
Likes: 0
From: Michigan
Originally Posted by Wicked_Hugger99
autos loss anywhere from 17-20% depending so id figure around 380FWHP based on the stangdyno #s. On an inertia dyno ud have prolly put another est 10-15rw down so then you could say close to 400FWHP. Remember these are estimated #s. Give or take Ur ETs at the track will tell the real story!!!
I have been hearing that with the Dynojet and figure the Mustang would be better at guessing FWHP.
So, if I took 318.4 times 117 (for a 17% loss) I would guess-timate a 373 FWHP. OR, 318.4 times 120 (for a 20% loss) I would guess-timate a 382 FWHP.
Either way 373 HP sounds better than the advertised 325 HP from Pontiac (BTW, I know the 325 is under rated) with only a Lid, headers, and muffler.
* Also, how can I use my ETs from the track to help determine FWHP? Or, do you just mean that I should have a noticable increase. So, I did 13.2 before mods and tune and I should do what after? Maybe 12.8 @ 110
ya id have prolly guessed that. My old Z when it was at 330rwhp hit 109.8mph but when i say varibles i mean Ex. like if you were to run skinnes ud pick sum mph cuz of less air resistance, U know things like that. But guessin rwhp by Trap speed is always just a rough estimation. Jus my humble opinion cuz im no expert
Thread Starter
TECH Addict
Joined: Feb 2004
Posts: 2,335
Likes: 0
From: Michigan
Originally Posted by PewterWSSicc
Hmm, so would you guess that my car has 321 rwhp because i hit 109 in the quater.
When I ran the 13.2 at 104 mph I had a clogged driver side cat that took some 'umph' away. I think the 01 and 02 F-Bodies can trap at 108 mph normally. That said I hope I am closer to a 112 mph trap speed with my 322 torque max.
yea cuz i think ud have hit 335-340rw on an inertia dyno. You just might hit 112mph w/ optimal weather conditions and maybe a lose a lil weight like takin out spare tire, etc. Try disconnectin the front swaybar too. all imho
TECH Regular
Joined: Jan 2005
Posts: 476
Likes: 0
From: Pleasanton, CA
I thought stock F-bodies usually trapped around 106 or 107 mph in the quarter. I am sure there are exeptions and just unusually strong motors. But isnt that pretty much what they do, 106/107 mph.
Thread Starter
TECH Addict
Joined: Feb 2004
Posts: 2,335
Likes: 0
From: Michigan
Originally Posted by Wicked_Hugger99
yea cuz i think ud have hit 335-340rw on an inertia dyno. You just might hit 112mph w/ optimal weather conditions and maybe a lose a lil weight like takin out spare tire, etc. Try disconnectin the front swaybar too. all imho
Weight reduction is good. The sway bar is gonna go from a 32mm to 35 for road racing. I just like to get it to the drag strip too.
My goal has been to get to 12.8 and I am hoping to do that as soon as I can get to Milan.
Originally Posted by PewterWSSicc
I thought stock F-bodies usually trapped around 106 or 107 mph in the quarter. I am sure there are exeptions and just unusually strong motors. But isnt that pretty much what they do, 106/107 mph.
I was going by memory and I was probably a bit more optimisitic (or not).
Motortrend for the 00' WS6 did the 1/4 in 13.5 at 107.4 mph.
My mods and dyno numbers are in sig. The dyno was done on a Dyno Jet, and the convertor was unlocked as I'm sure yours was to. The dyno was done at Fastech, someone on here said it was reading about 10 rwhp low but I'm sure about that. I have no new track times but I'm expecting probably a 12.6 - 12.7. My car before Mac's dynoed at 322 rwhp and ran the #'s in the sig in the 1/8th which should equal about a 12.9 - 13.0.