at 3000 I am at 100mph in 5th - but then I could not get my speedo to report perfectly with the 3:73 speedo cog - it always seemed to be reading too fast so I ended up using a 4:10 speedo cog - hmmm - maybe it was correct.
Here's what your set-up looks like. 2300 RPM at 70. That's pretty good for cruizing. At 1800 RPM it will lug at 55mph in 5th unless you are running a diesel. You would need to shift to 4th to accel.
Your tranny has a pretty low first, so that gear will not be very usefull with a 3.73 diff. Redline at 35 mph is pretty low. If you are thinking of quarter mile runs, you should think of 2nd gear starts.
You can make 1st gear useful with a 3.27 diff. but 5th is pretty useless unless you are going 80 or so.
There's no one good solution for a T5 since the ratios are so wide. Pick your poison. The 3.73 gives you gears 2-5. The 3.27 gives you 1-4 useful. You pretty much need to go to a closed ratio TKO road race tranny to get all of the gears to work. Here's what it looks like with a 3.55
Henry at 55mph I'm right about 1800-1900 rpm. 2000 [email protected] 60mph. I have 17"'s. First gear with either 355's or 373's will seem to short for these light wt. cars.
Engine combo is a factor when looking at what gears to run. Stock engine will benifit from the 373's,as will the 355's if used. Really not a huge difference between these two ratios if you have the chance to drive them back to back. I can hardly notice any difference in first gear when driveing cars with these two ratio's. Most noticable difference is when in 3rd and 4th gears between the two ratio's.
Pete beat me to it. After a long question on this a few years back I went with the TKO road race, 373's backing up the 418w 1,800 at 55 in 5th but the torque of the 418 saves the down shift if I need to go go go..
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