Highest dyno for a Stock Internal NA engine?
TECH Junkie
Joined: Jan 2002
Posts: 3,015
Likes: 0
From: At the office
Originally Posted by absolut_speed
362.5hp and 372.7ft-lb tq
-Ported Throttle Body
-Descreened MAF
-MSD Wires
-NGK Plugs
-QTP Stainless Headers
-QTP Merge Collectors
-QuickTime Electric Cutout
-QTP Off-road Y-pipe
-Speed Inc Dynotune
-Ported Throttle Body
-Descreened MAF
-MSD Wires
-NGK Plugs
-QTP Stainless Headers
-QTP Merge Collectors
-QuickTime Electric Cutout
-QTP Off-road Y-pipe
-Speed Inc Dynotune
I put down 363rwhp/372rwtq with just bolt ons, through a 12 bolt with 3.73s...this was about 2 years ago.
My mods at the time were:
12 bolt w/ 3.73s
NO TUNING
Grottyohann headers
True dual exhaust/Xpipe
lid
ported TB
stock descreened MAF
ASP pullies
aluminum flywheel
carbon fiber d/s
indiglo gauges
I'm sure without the 12 bolt and with some tuning to bump the timing a bit and get a solid a/f ratio, I could have approached 380rwhp.
I think a max effort bolt on car can make over 380rwhp with all the mods I listed above, plus say a Meziere waterpump, tuning and if they're considered "bolt ons", some 1.8 roller rockers.
We've had a few strong ones in here.
One was a 02 WS6 and made 350hp/359tq on a stock tune and 358hp/372tq after our tune at 13.0/1 AF Think his mods were ported TB, PPC headers, off road ypipe, corsa exhaust, ASP and Lid.
He put a Electric WP on it and is due to get a 90mm LSX. Results will be interesting when it comes back in!
Another 02 Z made 350hp/362tq and made 356hp/371tq after the tune. He threw a 228/224 cam in it and ran some 11.7's at 118mph on drag radials.
One was a 02 WS6 and made 350hp/359tq on a stock tune and 358hp/372tq after our tune at 13.0/1 AF Think his mods were ported TB, PPC headers, off road ypipe, corsa exhaust, ASP and Lid.
He put a Electric WP on it and is due to get a 90mm LSX. Results will be interesting when it comes back in!
Another 02 Z made 350hp/362tq and made 356hp/371tq after the tune. He threw a 228/224 cam in it and ran some 11.7's at 118mph on drag radials.
TECH Apprentice
Joined: Jan 2002
Posts: 311
Likes: 0
Originally Posted by Smoke_ur_5.0
We've had a few strong ones in here.
One was a 02 WS6 and made 350hp/359tq on a stock tune and 358hp/372tq after our tune at 13.0/1 AF Think his mods were ported TB, PPC headers, off road ypipe, corsa exhaust, ASP and Lid.
He put a Electric WP on it and is due to get a 90mm LSX. Results will be interesting when it comes back in!
One was a 02 WS6 and made 350hp/359tq on a stock tune and 358hp/372tq after our tune at 13.0/1 AF Think his mods were ported TB, PPC headers, off road ypipe, corsa exhaust, ASP and Lid.
He put a Electric WP on it and is due to get a 90mm LSX. Results will be interesting when it comes back in!
If you look at the quickest stock interals list in the drag racing forum, and take the MPH and weights to your favorite calculator, it looks like 3 guys are above 390, 10 are above 370, and 21 are above 350. How in the heck do they do that?
Unfortunately, those guys don't seem to post dyno numbers ...
Unfortunately, those guys don't seem to post dyno numbers ...
Originally Posted by critter
If you look at the quickest stock interals list in the drag racing forum, and take the MPH and weights to your favorite calculator, it looks like 3 guys are above 390, 10 are above 370, and 21 are above 350. How in the heck do they do that?
Unfortunately, those guys don't seem to post dyno numbers ...
Unfortunately, those guys don't seem to post dyno numbers ...
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TECH Fanatic
Joined: Nov 2001
Posts: 1,695
Likes: 9
From: Raleigh, NC
I watched a bolt on '02 SS put down 350/360 through manifolds and cats this year at the bristol bash... Pulley, SLP 85MM MAF, catback, and lid were the only mods that I know of. It was freakish...My friends '01 SS with TR 224, Hooker LTs & ORP, & Ported TB only made 375/365 on the same dyno same day 
Originally Posted by niphilli
I watched a bolt on '02 SS put down 350/360 through manifolds and cats this year at the bristol bash... Pulley, SLP 85MM MAF, catback, and lid were the only mods that I know of. It was freakish...My friends '01 SS with TR 224, Hooker LTs & ORP, & Ported TB only made 375/365 on the same dyno same day
Originally Posted by SMOKIN01TA
how do you calculate that?
where K is in 234..245. I suspect most of the calculators on the net use 234 as that is what has been published for the last 40 year. So do the slide rule power calculators you get from Moroso and others. However, taking a sample of a bunch of todays cars that have dyno numbers and track numbers indicates that 244 is closest. I can usually get a match within a couple HP comparing calculated HP to dyno HP for cars that post numbers here. Probably would need a different constant if everyone used Mustang dynos.
Originally Posted by critter
HP = race-weight * MPH^3 / K^3
where K is in 234..245. I suspect most of the calculators on the net use 234 as that is what has been published for the last 40 year. So do the slide rule power calculators you get from Moroso and others. However, taking a sample of a bunch of todays cars that have dyno numbers and track numbers indicates that 244 is closest. I can usually get a match within a couple HP comparing calculated HP to dyno HP for cars that post numbers here. Probably would need a different constant if everyone used Mustang dynos.
where K is in 234..245. I suspect most of the calculators on the net use 234 as that is what has been published for the last 40 year. So do the slide rule power calculators you get from Moroso and others. However, taking a sample of a bunch of todays cars that have dyno numbers and track numbers indicates that 244 is closest. I can usually get a match within a couple HP comparing calculated HP to dyno HP for cars that post numbers here. Probably would need a different constant if everyone used Mustang dynos.
critter
There's one big problem with taking trap speed and weight to figure out rwhp. When people run awesome times at the track it's usually not in 68 to 70 degree weather which is the SAE correct temprature. The hp calculated from mph and weight at the track is almost always higher than an SAE corrected hp since it's usually cooler than 70 degrees or whatever SAE tempratue is.
I know in 30 degree weather with the DA around -2000ft the altitude correction factor is aroun 108%, or the air 8% more dense than at 70 degrees and sea level.
Given that formula my car is making 369rwhp, or higher than anyone else that's reported SAE corrected dyno numbers in this thread. SAE corrected I'm actually around 340rwhp.
There's one big problem with taking trap speed and weight to figure out rwhp. When people run awesome times at the track it's usually not in 68 to 70 degree weather which is the SAE correct temprature. The hp calculated from mph and weight at the track is almost always higher than an SAE corrected hp since it's usually cooler than 70 degrees or whatever SAE tempratue is.
I know in 30 degree weather with the DA around -2000ft the altitude correction factor is aroun 108%, or the air 8% more dense than at 70 degrees and sea level.
Given that formula my car is making 369rwhp, or higher than anyone else that's reported SAE corrected dyno numbers in this thread. SAE corrected I'm actually around 340rwhp.
On The Tree
Joined: Feb 2002
Posts: 102
Likes: 0
I tuned a 02 Z28 6spd that pulled 371 rwhp SAE, full bolt-ons. Dynotech Headers, AMS true duals, pulley, shortbelt, AMS ported TB, and lots of time on the dyno. 
I will print up a dynosheet and scan it for ya. Car put out ~338 with stock manifolds, and put out 368rwhp with just the change to dynotechs and duals.
Chris
AMS Racing
I will print up a dynosheet and scan it for ya. Car put out ~338 with stock manifolds, and put out 368rwhp with just the change to dynotechs and duals. Chris
AMS Racing
Originally Posted by AMS
I tuned a 02 Z28 6spd that pulled 371 rwhp SAE, full bolt-ons. Dynotech Headers, AMS true duals, pulley, shortbelt, AMS ported TB, and lots of time on the dyno. I will print up a dynosheet and scan it for ya. Car put out ~338 with stock manifolds, and put out 368rwhp with just the change to dynotechs and duals.
Chris
AMS Racing
I will print up a dynosheet and scan it for ya. Car put out ~338 with stock manifolds, and put out 368rwhp with just the change to dynotechs and duals. Chris
AMS Racing
I think a lot of people will be surprised that bolt-on cars are breaking 370rwhp.
Originally Posted by FAST LS1
critter
There's one big problem with taking trap speed and weight to figure out rwhp. When people run awesome times at the track it's usually not in 68 to 70 degree weather which is the SAE correct temprature. The hp calculated from mph and weight at the track is almost always higher than an SAE corrected hp since it's usually cooler than 70 degrees or whatever SAE tempratue is.
I know in 30 degree weather with the DA around -2000ft the altitude correction factor is aroun 108%, or the air 8% more dense than at 70 degrees and sea level.
Given that formula my car is making 369rwhp, or higher than anyone else that's reported SAE corrected dyno numbers in this thread. SAE corrected I'm actually around 340rwhp.
There's one big problem with taking trap speed and weight to figure out rwhp. When people run awesome times at the track it's usually not in 68 to 70 degree weather which is the SAE correct temprature. The hp calculated from mph and weight at the track is almost always higher than an SAE corrected hp since it's usually cooler than 70 degrees or whatever SAE tempratue is.
I know in 30 degree weather with the DA around -2000ft the altitude correction factor is aroun 108%, or the air 8% more dense than at 70 degrees and sea level.
Given that formula my car is making 369rwhp, or higher than anyone else that's reported SAE corrected dyno numbers in this thread. SAE corrected I'm actually around 340rwhp.
Incidently, that might be the answer to how JS12, RAGEman, RUQWIKR, et. al. get those boggling numbers - large negative DA. 119.23 MPH at 3435# is simply incredible, but if that was at -2700 DA, the computed HP would drop 10%, and 360 HP sounds a lot more reasonable for a bolt-on car than 400.
In any case, if you take care and do the correction, the numbers are as good as dyno numbers and are a lot more available to those of us out in the sticks. There is no dyno local and even the local track doesn't have a scale. Finally,
the one and only time I had a car dyno tuned, it slowed down even though the dyno numbers were better.
Last edited by critter; Feb 12, 2004 at 07:19 AM.
9 Second Club
Joined: Feb 2004
Posts: 818
Likes: 215
From: VA
I had the gm hot cam, home ported heads, stock intake, hptb, hpma, asp, macs & 4.56's 
in a stock rear. It made 368hp and 340 trq (20hp gaine with Fbody central tune) It made power all the way to 6600 & was spun to 7000. Went 12.5@113 with 2.0 60' on street tires.
in a stock rear. It made 368hp and 340 trq (20hp gaine with Fbody central tune) It made power all the way to 6600 & was spun to 7000. Went 12.5@113 with 2.0 60' on street tires.