Although this is an outdated/abandoned convo. Maybe someone else looking for info might use this. I have a '05 Ram SRT-10 Quad Cab; only mods are Volant CAI and resonator delete. Ran it down in Arizona Southwest International Raceway. Temps were 103 for all my runs, barometric pressure was like 29.8, had around 7% humidity, and elevation is around 2600' above sea level. I ran on HORRIBLE street tires and could not get traction through first and some of second. Ended up running an average time of 14.4 to 14.6 ending around 93-97mph launching with tow/haul on and from around 1k RPM.
Case in point. I believe its all about location. An Srt-10 in Arizona will run completely different than one say in Flordia, California, etc... If you've actually ran your truck at the 1/4, use the link below and pick a racetrack. Its amazing what elevation and air density can do to your times/speed. Hope this helps someone. Me personally, I'm going back to central California and might run at Sacremento Raceway. Hoping for a 13.8 @ around 100-103.
DA Calculator - Density Altitude Calculator - DragTimes.com