Figured I'd head out to the track today ad try the 82mm pulley out, last time was March and it was some great blower weather (-300 DA) and with the 90mm pulley it ran 10.83 @ 128 or so.
Today I threw the 82mm pulley on, weather was decent (+500 DA, 60 degrees) so if it ran the same as the 90mm in -500 DA weather I'd be happy. Only thing thats different from March was I put a steel 1 piece PST driveshaft in the car and the 82mm pulley, I used Justin's 90mm tune and just backed off the timing a bit in some RPM ranges and added a little more fuel to be safe.
Exact list of Mods:
2011 base GT auto, 7990 miles (put the blower on with 1200 miles on it), 3/4 tank of fuel.
Roush/TVS 2.3 supercharger with a VMP 82mm pulley, 9psi.
Slightly modified VMP tune.
Roush rear springs.
K&N drop in air filter.
PST 1 piece steel driveshaft.
Stock front wheels/tires, stock rear wheels with M/T 265/18 drag radials.
GT500 mufflers (for sound).
Edelbrock panhard bar (to center rear).
Removed jack/spare.
Made three passes, best was off the trailer 10.708 @ 131.9, car didnt hook well but it still ran decent. Second pass it spun a little more and I didnt have much cooldown time, ran a 10.80 @ 130. Third pass spun pretty bad when it shifted second so I had to let off completely and get back on it, still ran a 10.85 which surprised me as much as I had to back off the throttle.
Pic of the first two slips:
Thought I'd run the car across the scales, this is without me in it, I weigh 235 and the scale read 3885 with me in it.
Video of the best pass, FWIW the Challenger next to me had a Magnusson supercharger and some other mods, same 2.3 TVS b,ower. Nice guy that owned it, needless to say he was pretty shocked when I pulled away from pretty quick.
All in all I'm pretty happy with this setup, this isnt a race car its my daily driver so I'm not trying to squeeze every tenth out of it or lose sleep if its not within .05 each pass. I'm about at the limit of these little 18" drag radials on stock suspension parts, its hooks OK but a good set of 275/60 DRs and some LCA brackets/LCAs would probably help the 60 foot enough to get it in the 60s or 50s on a good day.
But since I dont want to make a race car out of this I'll just leave it as-is, car still drives/rides like stock and I dont want to mess it up
Today I threw the 82mm pulley on, weather was decent (+500 DA, 60 degrees) so if it ran the same as the 90mm in -500 DA weather I'd be happy. Only thing thats different from March was I put a steel 1 piece PST driveshaft in the car and the 82mm pulley, I used Justin's 90mm tune and just backed off the timing a bit in some RPM ranges and added a little more fuel to be safe.
Exact list of Mods:
2011 base GT auto, 7990 miles (put the blower on with 1200 miles on it), 3/4 tank of fuel.
Roush/TVS 2.3 supercharger with a VMP 82mm pulley, 9psi.
Slightly modified VMP tune.
Roush rear springs.
K&N drop in air filter.
PST 1 piece steel driveshaft.
Stock front wheels/tires, stock rear wheels with M/T 265/18 drag radials.
GT500 mufflers (for sound).
Edelbrock panhard bar (to center rear).
Removed jack/spare.
Made three passes, best was off the trailer 10.708 @ 131.9, car didnt hook well but it still ran decent. Second pass it spun a little more and I didnt have much cooldown time, ran a 10.80 @ 130. Third pass spun pretty bad when it shifted second so I had to let off completely and get back on it, still ran a 10.85 which surprised me as much as I had to back off the throttle.
Pic of the first two slips:
Thought I'd run the car across the scales, this is without me in it, I weigh 235 and the scale read 3885 with me in it.
Video of the best pass, FWIW the Challenger next to me had a Magnusson supercharger and some other mods, same 2.3 TVS b,ower. Nice guy that owned it, needless to say he was pretty shocked when I pulled away from pretty quick.
All in all I'm pretty happy with this setup, this isnt a race car its my daily driver so I'm not trying to squeeze every tenth out of it or lose sleep if its not within .05 each pass. I'm about at the limit of these little 18" drag radials on stock suspension parts, its hooks OK but a good set of 275/60 DRs and some LCA brackets/LCAs would probably help the 60 foot enough to get it in the 60s or 50s on a good day.
But since I dont want to make a race car out of this I'll just leave it as-is, car still drives/rides like stock and I dont want to mess it up
