Quote:
Originally Posted by Toyota86.ir
My Summury about FD swap with AT and MT Transmission :
most street drag is between 20-110 miles and the best choice for AT is 4.88-5.29 and best choice for MT is 4.77-4.88
my choice for AT is 4.88 and for MT is 4.72
please see below, each cell number shows the percent of time reduction.
for example the AT 4.88 number in table is 5.2 at 170km/s. number 5.2 means if AT 4.1 reach 170km/s in 17 seconds then AT 4.88 reach 170km/h in 16.11 seconds.
16.11 is 5.2% lower than 17 seconds.
see other numbers in this excel :
http://toyota86.ir/wp-content/upload...1/FD-GR-T.xlsx
this is another useful excel i downloaded from this forum and uploaded again because google link was not available:
http://toyota86.ir/wp-content/upload...86-Ratios.xlsx |
In drag racing you want to run max rpm at the end of the 1/4 in 1:1 which is 5th gear. A 5.29 will not get you there unless you run a smaller tire. A drag only no street driving car would want a 5.71 ratio in 5th gear or a 4.56 max rpm in 4th gear. SO choose tire size then get the gearing