Hey Greg, any reason you wouldn’t try a classic 14x32-15 slick? More tread width, less rollout so you can 60 foot better? I am running a 10.5w -31 because that’s all that will fit... With the 4.56 gears and shorter tires I am revving a bit more through the lights, but some say that is the optimum way to ET, by hitting the peak just after 1,000 feet if the motor hold on to the hp on the top...
Just some ideas...
Arnie
I thought I would try some lighter tires. The 10.5x33 tires way 13 lbs less EACH than what I was running. I need a tall 33 inch tire since I have a 4.56 gear. I have 14 inch rims, so my rational was I will be hitting the tire well with that wide rim, almost like the sweet spot of a bigger tire if you follow my logic. The edges on my 15x33s had a funny pattern, at least to my eye. Having put down three runs with 60 fts of 1.276, 1.274, and 1.275 I think it is going to get better. How hard do you hit yours/ Launch rpm off the brake? I only went up to 4,000 rpm this weekend.
The weather station I have is new to me and I quoted what I thought was DA, (2427) but it is listed as "perf density" Then further was a DA number that was higher. Rereading my weather conditions for the 8.854 pass at 1.54.32 I have -a correction of 1.0884, ADR of 90.7, DA of 3275 feet. Can someone shed light on the difference between perf altitude and density altitude?
