Took my truck to the track for Saturday morning test and tune. It wasn't that busy but I only got in 3 runs. They broke us into 4 groups, and then had 4 lanes, 1&2 for street tires and 3&4 for slicks. They didn't seem to be enforcing it very strictly though as I saw a bunch of cars on slicks in lanes 1 and 2. Every time I got up to the front, I got paired with someone from lane 3 which was mostly caged big block drag cars. I don't know why the fat guy directing the cars wouldn't put me next to other street cars but it was actually pissing me off because there was a GMC Sierra I wanted to race as well as a 99-04 Mustang GT and some Civic's that would have been better matches for me than the big block 70 Camaro that I kept getting paired with.
First run was against the Camaro. He ran in the 11's. My truck pulled a 2.460 60 foot, and ran firstname.lastname@example.org. Never got it out of 2nd gear. I was surprised because I usually cross in 3rd but I was at near 6000 rpm in 2nd when I crossed.
2nd run I pulled a 2.454 60 foot, and ran email@example.com. I got into 3rd gear and it pulled 2 more mph on the trap speed.
3rd run was a 2.429 60 foot and another firstname.lastname@example.org. The 2nd and 3rd run I tried to stall the truck up against the brakes before launching but it didn't help much at all on the 60 foot times. I usually just mash the gas from idle on the 3rd yellow light.
Well that sucked. It was 86 degrees and we are 4226 ft above sea level.
I ran here a few weeks ago and ran a couple of 15.1@94mph runs and a 15.2@93mph. I was actually impressed with that time because most cars are .5-.7 slower up here at this track.
I just ran a DA correction, and it says my 15.7@90mph should be:
Stock and Mildly Modified Naturally Aspirated Engines
14.278 @ 98.717 MPH
Extensively Modified Naturally Aspirated Engines
14.58 @ 96.549 MPH
The density altitude correction says 7197 ft. Wow!
I usually run closer to the extensively modified N/A corrected times even though my truck is mostly stock. I did pull the spare and tailgate.
My coolant temps were hovering at 203 degrees. I popped the hood between runs to cool it down but by the time I'd get through staging (turning it off each time I pulled forward) and up to the line I was back around 197-203 again.
It was hot but not humid. The truck was basically a turd below 4000 rpm. It wasn't pulling like it normally does off the line. I never new the heat would affect my truck like this.
Are there any tricks I can do like put a resistor in the air charge temp sensor to fool the computer that its cooler outside to richen the mixture? Would a 180 degree t-stat help keep the coolant temps lower. I get nervous when my temp gets over 200 degrees. My GMC never gets over 185 degrees. I have a 180 t-stat and electric fan on that truck.