[SRT8 Freak]

I Dyno'd my 300C SRT8 last Saturday in Pleasanton, CA.

HP: 352.12 (at the wheel)
TRQ: 347.57
Run Conditions: 68.15F, 33% humidity

The car was tested in 4th gear and maxed at 168mph at 5,800 rpm. I would love to see what it would do in 5th!

The technician stated that the car was running very "rich" for factory tunning and suggested that "leaning" out the air\fuel mixture would increase HP.

I have 1,320 miles on the car and the engine is stock - no mods.

The numbers seem to add up: 425hp - 17% power loss through the drivetrain. Typlically, auto-tranny's can expect 15-20% loss.

Now that I have a "baseline" dyno run, I am looking forward to seeing how much of an increase a CAI and SuperJet II chip will give me over stock.

DOES ANYBODY HAVE ANY DYNO FIGURES ON HP INCREASE WITH THE TWO ABOVE MODS on the 300C SRT8?

Hope the above data helps.

SRT8 Freak

 

[glhs837]

What kind of fan, if any, was used during the run, and what were coolant temps, if you have that? I'm thinking your numbers are a bit low becuase the car was not happy with the environment. Google "Dinan dyno", theres an article where he makes the same car give three different readings, just by changing the size of the fan in front of it.

He's building a mongo test cell, becuase even with a huge turbine fane, he still cant accurately reproduce airflow at speed.

 

[Weedo]

I Dyno'd my 300C SRT8 last Saturday in Pleasanton, CA.

HP: 352.12 (at the wheel)
TRQ: 347.57

Very similar to our SRT-8 Magnum:
346rwhp
350rwtq

The crazy part is that our '05 C6 Corvette 6-speed put down EXACTLY the same numbers (different day, same dyno, similar temps). Yep, 346/350 (stock). A couple of strong stock V8's their putting out!! :eek5:

 

[SRT8 Freak]

What kind of fan...

Yes, a fan was used. However, it looked like it was something you could buy at Home Depot for your shop/garage. Bigger than your typical house fan to keep you cool a hot day, but nowhere near industrial stength CFM.

Your right, a better/bigger fan (airflow) would probably yeild better results.

What kind of fan, if any, was used during the run, and what were coolant temps, if you have that? I'm thinking your numbers are a bit low becuase the car was not happy with the environment. Google "Dinan dyno", theres an article where he makes the same car give three different readings, just by changing the size of the fan in front of it.

He's building a mongo test cell, becuase even with a huge turbine fane, he still cant accurately reproduce airflow at speed.