Dyno today - 6.0L, Absolute Heads, etc
10-25-2003, 07:19 PM
#1
Dyno today - 6.0L, Absolute Heads, etc If you were hoping for "dyno queen" numbers, I am about to burst your bubble. This post will hopefully make you realize that dynos are for tuning and not for making peak numbers.
The numbers overall are on the "low side" compared to most dyno graphs and this is why:
1 - TH400 with 4000 stall nitrous converter
2 - 12-bolt with 3.73s
3 - ET Streets
4 - 3-inch steel driveshaft
5 - Less than 50 miles on motor
So here is the graph comparing my base pull with the final "tuned" pull:
As you can see, only 400hp and 438tq. Now comes the information you may find interesting. The first pull (red one in top graph) was using the tuning that I ran an 11.25 @ 118 on Thursday night. After tuning, I gained about 21hp and 25tq. If numbers are correct, I should gain 2mph and some ET with the new tuning.
Now let me ask you this, "How many 379 rwhp cars do you know of running 11.2s at 118?" Not many I would guess. This is substantial proof that ET is all about weight and the launch. Haven't had a chance to weigh the car yet.
Of course, these numbers would have been higher with street tires on the car, through a 6-speed and 10-bolt with alumnum driveshaft. How much higher? No one knows for sure.
Moral is, many will dyno higher, but run slower. So don't get hung up on dyno numbers. You might also notice how flat the curve is, meaning consistent power throughout without big peaks or lulls.
The numbers overall are on the "low side" compared to most dyno graphs and this is why:
1 - TH400 with 4000 stall nitrous converter
2 - 12-bolt with 3.73s
3 - ET Streets
4 - 3-inch steel driveshaft
5 - Less than 50 miles on motor
So here is the graph comparing my base pull with the final "tuned" pull:
As you can see, only 400hp and 438tq. Now comes the information you may find interesting. The first pull (red one in top graph) was using the tuning that I ran an 11.25 @ 118 on Thursday night. After tuning, I gained about 21hp and 25tq. If numbers are correct, I should gain 2mph and some ET with the new tuning.
Now let me ask you this, "How many 379 rwhp cars do you know of running 11.2s at 118?" Not many I would guess. This is substantial proof that ET is all about weight and the launch. Haven't had a chance to weigh the car yet.
Of course, these numbers would have been higher with street tires on the car, through a 6-speed and 10-bolt with alumnum driveshaft. How much higher? No one knows for sure.
Moral is, many will dyno higher, but run slower. So don't get hung up on dyno numbers. You might also notice how flat the curve is, meaning consistent power throughout without big peaks or lulls.
10-25-2003, 07:27 PM
#3
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400 rwhp on an unlocked converter is really good, no that is awsome.... Who did you dyno tuning? Strange as it may be I ran exactly 11.25 @117.84 with my AS heads but my DA was around 2600+ with the interior in the car...
10-25-2003, 07:31 PM
#4
Todd, you don't have to explain that dyno #'s don't mean squat and should only be used as a measuring device. The non-ignorant people that know this wouldn't even question the #'s or ask, "why are they so low, yada...."
Your car is HAULIN' major ***** and you gained a LOT of power on the tune. I can't wait to see 10s
Your car is HAULIN' major ***** and you gained a LOT of power on the tune. I can't wait to see 10s
10-25-2003, 07:45 PM
#6
You guys are right. Just expecting guys to come in and start ragging on Jay's heads or soemthing I guess.
The converter is not locked. Don't think that is an option for me AFAIK. It should respond well to the nitrous next spring when I juice it though
I did the tuning myself using edit.
The converter is not locked. Don't think that is an option for me AFAIK. It should respond well to the nitrous next spring when I juice it though
I did the tuning myself using edit.
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10-25-2003, 08:32 PM
#9
Tweaked the injector flow rate for LTrims and worked the PE table for final A/F ratio. I wanted to be at 13:1 beacause it is a little on the safe side, especially when I start to spray. I know the TNT kits are jetted a little heavy on the fuel side, but can't be too safe!
I think a 10.9x is obtainable at the Thunder race. And low 10s or high 9s on the 150 jets.
I can't believe how smooth and well the car launches. I never had 60-foot times this good even when I was turbo or running spray. Already cut a 1.50 on just the motor! But I think I will need a taller tire for nitrous, because I am already trapping with the shift light illuminated.
I think a 10.9x is obtainable at the Thunder race. And low 10s or high 9s on the 150 jets.
I can't believe how smooth and well the car launches. I never had 60-foot times this good even when I was turbo or running spray. Already cut a 1.50 on just the motor! But I think I will need a taller tire for nitrous, because I am already trapping with the shift light illuminated.
10-25-2003, 08:47 PM
#11
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I have AS 5.3 stage 2s,595/595...230/230....110lsa cam,hooker longtubes,Vig 3600 ,LS6 intake,3.73s..I only run 12.0s at 114 for some reason....I made 386 rwhp and 378 rwtq.....Anyone have any ideas what may be wrong?
Last edited by Hugger SS; 10-25-2003 at 08:58 PM.
10-25-2003, 08:56 PM
#12
Is your engine a cast iron 6.0L block or an auminum 5.7L Block you had sleeved or stroked? Those times and numbers look very good to me. I can see what you mean by Dyno Queens. My car Dynoed 408 rwhp with the 150 shot N20 but it only pulled 12.7 at the track. Yes I have issues with traction and every thing else. You proved to me how much faster my car could be if I just worked on the Traction problems and worried about more power latter. Also makes me want a 4" bore block and not worry about a big sleeved block. Outstanding times and numbers. Hats off to you!!
10-26-2003, 01:46 AM
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Nice numbers 
When I was A4 and running on the track I made 122.6mph with around 390RWHP unlocked through 12 bolt and heavy DS.
When I switched back to the six speed (though with a cam change) I ran 11.1@124mph at 130 pounds more weight.
I think you have the power for tens@122-124 personally great job
When I was A4 and running on the track I made 122.6mph with around 390RWHP unlocked through 12 bolt and heavy DS.
When I switched back to the six speed (though with a cam change) I ran 11.1@124mph at 130 pounds more weight.
I think you have the power for tens@122-124 personally
great job 
10-26-2003, 06:25 AM
#16
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Hey Todd,
Those look like good numbers through the auto with a loose N2O verter. I am having a hard time reading your A/F (cant see the gridlines), but it looks a lil on the lean side (especially in the midrange). Are you going to spray it?
-Nick
Those look like good numbers through the auto with a loose N2O verter. I am having a hard time reading your A/F (cant see the gridlines), but it looks a lil on the lean side (especially in the midrange). Are you going to spray it?
-Nick
10-26-2003, 08:02 AM
#17
Levi - The dyno is in Columbus about an hour away. There are closer dynos, but Brian is easy to work with and always does his repeat customers right. There is no set formula for tweaking the PE tables. It is mostly trial and error. Make an adjustment and then make a pull. You get the feel for it after a while.
Nick - the image is hard to read, but it traces pretty close to the 13 line all the way across. I will spray with a TNT kit, but will back the timing off a little. Less timing will effectively richen it up. The TNT kits are jetted rich anyway because they are set up for 50psi of fuel pressure.
Nick - the image is hard to read, but it traces pretty close to the 13 line all the way across. I will spray with a TNT kit, but will back the timing off a little. Less timing will effectively richen it up. The TNT kits are jetted rich anyway because they are set up for 50psi of fuel pressure.
10-26-2003, 08:06 AM
#18
Texas - My block is a stock 6.0L iron block with no machine work. Just had the stock crank, Eagle rods, and Wiseco pistons balanced by a local machine shop that builds lots of reace motors.
Hugger - Hard to say what is going on there. What kind of y-pipe and exhaust are you running? Did you dyno through the exhaust? Lot's a variables can affect perfomance.
Hugger - Hard to say what is going on there. What kind of y-pipe and exhaust are you running? Did you dyno through the exhaust? Lot's a variables can affect perfomance.
10-26-2003, 08:59 AM
#20
Originally Posted by Hugger SS
I have AS 5.3 stage 2s,595/595...230/230....110lsa cam,hooker longtubes,Vig 3600 ,LS6 intake,3.73s..I only run 12.0s at 114 for some reason....I made 386 rwhp and 378 rwtq.....Anyone have any ideas what may be wrong?
BTW 386 rwhpo on a unlocked Vig3600 would have be around 400-405 If the convertter was locked