LT1-LT4 Modifications 1993-97 Gen II Small Block V8

superflow number to dynjet numbers???

Thread Tools
 
Search this Thread
 
Old Dec 24, 2006 | 03:13 PM
  #1  
Mighty Whitey's Avatar
Thread Starter
12 Second Club
 
Joined: Feb 2006
Posts: 876
Likes: 0
From: Catlettsburg, Ky
Default superflow number to dynjet numbers???

just curious as to what kind of correction factor there is to go from a superflow dyno number to a dynojet number?

I dynoed my car with an a4 on a dynojet and made 349hp/363tq. I re-dynoed my car on a superflow dyno; with the 6spd, comp 503 (instead of 501) EWP, and double roller chain, it made 382hp/380tq.

I would have imagined swapping form the a4 to the 6spd ALONE would have gave me a majority of the gains that I got... and the car CLEARLY has more power now than before..

are superflow numbers different than dynojet numbers? something in-between a mustang dyno and a dynojet perhaps? I heard 7%, but I don't know how reliable that source is.
Reply
Old Dec 25, 2006 | 02:51 PM
  #2  
Ed Wright's Avatar
9-Second Club
iTrader: (1)
 
Joined: Feb 2002
Posts: 3,397
Likes: 9
From: Tulsa, OK
Default

Originally Posted by Mighty Whitey
just curious as to what kind of correction factor there is to go from a superflow dyno number to a dynojet number?

I dynoed my car with an a4 on a dynojet and made 349hp/363tq. I re-dynoed my car on a superflow dyno; with the 6spd, comp 503 (instead of 501) EWP, and double roller chain, it made 382hp/380tq.

I would have imagined swapping form the a4 to the 6spd ALONE would have gave me a majority of the gains that I got... and the car CLEARLY has more power now than before..

are superflow numbers different than dynojet numbers? something in-between a mustang dyno and a dynojet perhaps? I heard 7%, but I don't know how reliable that source is.

No such thing. These things are only good for comparing changes to a given vehicle on a given day. Dynos of the same brand in different locations often give different numbers for the same vehicle. The weather stations are not that acurrate, and the weather correction factors (SAE, Std, etc, ) are not that acrurate for a wide range of weather conditions, elevations, etc.
Reply
Old Dec 25, 2006 | 02:54 PM
  #3  
Mighty Whitey's Avatar
Thread Starter
12 Second Club
 
Joined: Feb 2006
Posts: 876
Likes: 0
From: Catlettsburg, Ky
Default

Originally Posted by Ed Wright
No such thing. These things are only good for comparing changes to a given vehicle on a given day. Dynos of the same brand in different locations often give different numbers for the same vehicle. The weather stations are not that acurrate, and the weather correction factors (SAE, Std, etc, ) are not that acrurate for a wide range of weather conditions, elevations, etc.

thank you for setting me straight... now, a buddy of mine who's on his high horse right now dynoed 45xrwhp in his ls1 car is all excited that it REALLY made 48xrwhp "dynojet corrected".... man I can't wait to bust his ***** on this one!
Reply
Old Dec 26, 2006 | 09:03 AM
  #4  
Ed Wright's Avatar
9-Second Club
iTrader: (1)
 
Joined: Feb 2002
Posts: 3,397
Likes: 9
From: Tulsa, OK
Default

The "internet story" is that Mustang dynos always give lower numbers than Dynojet, but I have a customer that always gains 10 to 15 on his local Mustang dyno after his stuff leaves my place. I have a Dynojet. If I were going to buy a dyno now, it would be a Superflow. They only built engine dynos when I bought mine or I would have bought one then. I tuned for too many shops with Mustang dynos that were having dyno problems at that time, so I knew I didn't need that. I don't hear of many problems with them now. That was about ten years ago. Trying to compare dyno numbers from different dynos in different parts of the country, you may as well be playing with yourself. About as productive.
Reply
Old Dec 26, 2006 | 10:33 AM
  #5  
BlackScreaminMachine's Avatar
Internet Mechanic
20 Year Member
iTrader: (17)
 
Joined: May 2005
Posts: 9,830
Likes: 2
From: Wallingford CT
Default

Ive used Super flow and Dynojet, I have seen maybe 1 hp difference, same mods, different day. I have seen Mustang dyno's be lower compared to the other 2 but it is to my knowledge that you have to input for alot of thing when dynoing. I could be wrong but that seems to me the reason why there is a variation.

In your case, you totally changed the setup, so who knows what diff in the #'s becuase in this equation your car's mods is the dependent factor.
Reply
Old Dec 26, 2006 | 11:10 AM
  #6  
Torkman15's Avatar
10 Second Moderator
iTrader: (2)
 
Joined: Feb 2004
Posts: 559
Likes: 0
From: Mid Michigan
Default

Dont get cought up by the dyno dragon, just take good notes at the track and study and use your time slips to get a real world idea of gains made.
Reply




All times are GMT -5. The time now is 06:41 PM.

story-0
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-1
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-2
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-3
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-4
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-5
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-6
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-7
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-8
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE
story-9
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE