hey peoples, i have a question about diff ratios and their effect on quarter mile times.
i have a 3.45:1 LSD at the moment, but a guy at work says he can get me a set of 3.7:1 diff gears for about $80, plus fitting and lapping into my housing (havent got a quote yet)
my current revs @ 60 in 4th are 1600, (1:1 ratio) and i figure that a set of 3.7s will see it turning at 1715 (or thereabouts
) at the same speed/gear, so maybe these extra revs will help stop me creeping over the speed limit cause it is reving a little harder.
what is the 5th gear ratio on a T5? i want to work out what revs @100km/h
i have done a 15.7, there is a 15.6 in there definately and maybe a 15.5 if i get it all perfect, 15.7 was @ 88.5MPH - how/will this be affected if i get the shorter ratio diff?
working off the terminal speed i was doing about 3800rpm in 4th as i crossed the line, and max power is at around 4500 (seat of the pants dyno lol)
do you think it will be worth it and where can i get a speedo gear to keep my speedo accurate?
sorry for so many questions, thanks for your help in advance!