DYNO results -STOCK- HO, 6spd, 3.73

[jgibson]

Thought I would share my dyno results with you all.



No Mustang dyno available here (Fort Collins, CO) so used a Dynojet 1200.



Temp was 71 deg, Altitude 5,200 feet. Again this truck is completely STOCK, HO, 6spd, 3. 73 gears, stock tires, runs all made in 5th gear.



Runs 1 and 2 done for repeatability. Run 3 done with the air box wide open NO air filter. No real gains on the 3rd run. Thus with the STOCK exhaust, the STOCK filter and air box are adequate. The first picture is of all 3 runs corrected to SAE power numbers. The next picture is the ACTUAL power, uncorrected.

 

[jgibson]

DYNO results -STOCK- HO, 6spd, 3.73 Non corrected

This is the non corrected power. If these images are too small for you to see. Go to my "readers rigs" gallery. There are larger images there.



Enjoy

 

[rbattelle]

It's disappointing that it doesn't look much like Cummins' claims (peak torque from 1400-3000 RPM). But still nice.

 

[Kimber]

Not as bad as I thought

Makes me feel somewhat better... By calculating a 20% drivetrain loss, I was expecting around 240-245hp.

 

[WadePatton]

more HO numbers

I finally found the numbers for everybody at our June dyno run.



Kirk Harris (4ramtracks) 03 3500 HO 6-sp made 262/473 on the Mustang.



Eric Lamb (elamb) 02 2500 HO 6-sp made 235/486.

 

[Vaughn MacKenzie]

On a dynojet I did 269. 9 and 499 Torque totally bone stock and 2000 miles. Vaughn

 

[Prairie Dog]

Originally posted by rbattelle

It's disappointing that it doesn't look much like Cummins' claims (peak torque from 1400-3000 RPM). But still nice.

Don't feel too bad. On the dyno the intercooler can't do it's job and that makes a big difference.

 

[jgibson]

-Vaughn-

Originally posted by Vaughn MacKenzie

On a dynojet I did 269. 9 and 499 Torque totally bone stock and 2000 miles. Vaughn

Are your figures corrected by SAE or uncorrected?

 

[jgibson]

Prairie Dog

Originally posted by Prairie Dog

Don't feel too bad. On the dyno the inter-cooler can't do it's job and that makes a big difference.

Prairie Dog,



I disagree that the inter-cooler is not as functional on a dyno. In order to keep the engine cool and also keep the fan clutch from engaging (thus using from 4 to 20 HP) a very large fan is placed in front of the radiator (intercooler). This fan is moving every bit as much air, thus cooling capacity, over the inter-cooler as when the truck is moving down the road!



John

 

[KLockliear]

SAE corrected #'s for the 03 HO's we have seen all run in the high 270's to the low 280's.



Rbattelle, this is a typical curve on these motors. Even the older ones look similar, regardless of what Cummins thinks.

 

[Swayse]

Keith, mine made 448 SAE corrected rwhp on a Dyonjet 1200 dyno. You told me I would make about 430 rwhp with my set up, close. Truck runs perfect, no codes, no surging on cruise, and I think I picked up 1 or 2 mpg.



I wish I would have dynoed after each mod to see what difference each mod made, but I did run at the strip.



All runs were done in 4x4 with 315/70/17 tires and 4" exhaust and AFE intake. Only the stock runs had the stock turbo.



Stock 18. 02 at 74

EZ Edge 15. 9 at 84

Bully Dog 14. 9 at 88

DD3 injectors and EZ Edge 14. 31 at 93. 01



No more racing for me until I get a new clutch, no clutch until I know what kind of power to expect with the new boxes. I'm thinking a South Bend MU 13-1. 375 Con FE and upgrade my input shaft while I'm in there.

 

[KLockliear]

The clutch for you would be the MU1947 Con FE. Good job with those numbers.

 

[y-knot]

I think you are just trying to kidd yourself by thinking the intercooler isn't doing it's job while the truck is on the dyno. The intercooler is still functioning, the fan is turning and air is being drrawn thru. So don't try and find comfort for your lower then expected dyno numbers, by blaming the intercooler. I can and do monitor intake air charge temperature, and sitting still for a while does not drasticly change the charge temp.

 

[jgibson]

Yup!

Like I said... . I believe the inter-cooler IS doing it's job on the dyno! The numbers I got on my STOCK truck are actually what I did expect. Take into account all of the parasitic losses from accessories and drive line, and throw out the SAE correction, actual numbers that I got are really quite good.



At least I know from where I start and will be able to offer real increase numbers (or not) for each mod I do, not seat of the pants stuff! I will use the same dyno after each addition, so I hope to give real numbers to those considering doing the same type of improvements. I will also be able to put a $ per HP / Torque gain to each addition.