Bernd and Jason
Thanks for the responce.
Berndt, i checked out that excel spreddsheet, pretty cool. My gear ratio
shows going from a 3.55 to 3.42. I don't know if that alot but,
Jason
My traction was so so. Everyone was complaining. The best 60 ft times went
from a best last year 2.12 to a best 2.34. Last year i had the stock 15x8
with the 255x65x15. This year with the R/T wheels 17x9 with 255x55x17.
these are an inch taller, and seem alot heavier.
Just for the fun of it i might get back to the track with my original rims
on the back to see if they make a difference. Hopefully it won't be windy
(tail wind ok)
<bernd@texas.net> wrote in message
news:200105311432.f4VEWiR11852@mw3.texas.net...
>
> (1) Yes, it will change the effective ratio - Depending on the tire size,
it
> can change it as much as +/- 1.0
> (2)That would also slow you down as well
>
> If you want to see the actual change in gearing with the different
rims/tires
> combo: http://www.speedtweaks.net/Automotive_Calculations.xls
>
> - Bernd
>
> > Hi all, 2k QC 4.7 5spd. 3.55. LSD
> > I was a little disappointed last night at the drag strip.
> > My best pass was a 15.89 at 84 mph.
> > The reason i am not happy is when my truck was stock i ran a 15.85@ 84
mph.
> > Now i have a Jet stage 2, intense performance stage 2, bosch 4417 +4,
180 t
> > stat and a Gibson single side swept.
> > What gives?
> > I think 2 things could be a factor.
> > 1. I put R/T wheels and tires. They are 1 inch taller that my stock
tires,
> > that would change the gear ratio?
> > 2. There was a pretty good head wind last night plus it was pretty
damp.
> >
> > What do you all think?
> >
> >
> >
>
>
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