treynor
Enthusiast
I borrowed's Liz's SRT/10 for a spin at the dragstrip today. Her car still has the stock run-flats on it, and I was going to get up and put on our new Purner drag wheels (more on that later), but at 6AM I decided I'd rather sleep an extra hour and give it a go with the stock tires. So off to the dragstrip I went.
The first few passes were predictably poor, as the track warmed up and I experimented with tire pressures and shift points. The SRT would spin on launch, then spin again during the 1-2 shift. I ran three passes in a row wth 2.0 60's and 12.2-.3 @ 118 1/4s, and started recording my launch RPM and shift points.
As the track continued to improve, I found that the 1-2 shift seemed to work best at 5900 RPM because the tach lagged, and the 2-3 shift at 6000 produced the highest 1/8th - 1/4 MPH gain. I finally put it all together with a launch which produced a 1.93 60 and an 11.8 @ 122 pass, staying in 3rd and hitting the rev limited just before the traps. I backed it up with a 1.90 60 and an 11.757 @ 119 pass where I tried shifting to 4th just before the traps.
Next week: returning to the dragstrip with Purner's new 18" wheel+spacer+studs package which fits over the stock rear brakes! I expect to run 11.4s
The first few passes were predictably poor, as the track warmed up and I experimented with tire pressures and shift points. The SRT would spin on launch, then spin again during the 1-2 shift. I ran three passes in a row wth 2.0 60's and 12.2-.3 @ 118 1/4s, and started recording my launch RPM and shift points.
As the track continued to improve, I found that the 1-2 shift seemed to work best at 5900 RPM because the tach lagged, and the 2-3 shift at 6000 produced the highest 1/8th - 1/4 MPH gain. I finally put it all together with a launch which produced a 1.93 60 and an 11.8 @ 122 pass, staying in 3rd and hitting the rev limited just before the traps. I backed it up with a 1.90 60 and an 11.757 @ 119 pass where I tried shifting to 4th just before the traps.
Next week: returning to the dragstrip with Purner's new 18" wheel+spacer+studs package which fits over the stock rear brakes! I expect to run 11.4s
You must be registered for see images
You must be registered for see images