Tranny and rear diff gear ratio for TT Vette??
12-24-2006, 09:48 PM
#2
Staging Lane
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FRC Tom(his name on Z06vette) uses a 2.73 rear gear with a 402 & STS with upgraded turbos and alot of boost. You'd only shift 2 or 3 times before 200 lol. He's also used 3.15s which he said made a difference. A local here in Houston is putting 3.15s on his 408 STS TT
12-24-2006, 10:20 PM
#3
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FRCs come with an M6 tranny which is a .74 5th gear. With a 3.42 final drive you would be going 206 mph at 6750 RPM (assuming a 26" tall tire).
If you had an M12 (which has a .84 5th gear), you would want a 3.15 final drive which would put 204 mph at 7k RPM in 5th (assuming a 26" tall tire).
If you had an M12 (which has a .84 5th gear), you would want a 3.15 final drive which would put 204 mph at 7k RPM in 5th (assuming a 26" tall tire).
12-24-2006, 10:36 PM
#4
Originally Posted by pianoprodigy
FRCs come with an M6 tranny which is a .74 5th gear. With a 3.42 final drive you would be going 206 mph at 6750 RPM (assuming a 26" tall tire).
If you had an M12 (which has a .84 5th gear), you would want a 3.15 final drive which would put 204 mph at 7k RPM in 5th (assuming a 26" tall tire).
If you had an M12 (which has a .84 5th gear), you would want a 3.15 final drive which would put 204 mph at 7k RPM in 5th (assuming a 26" tall tire).
12-25-2006, 10:21 AM
#5
9 Second Club
How much power/torque do you have, and where is it created. Do you anticipate 200 in 5th or 6th gear ?
Punch a few ratios into this, and see where 200mph will fall to tie in with your max power/torque.
http://www.geocities.com/z_design_st...ion_z28_6.html
Punch a few ratios into this, and see where 200mph will fall to tie in with your max power/torque.
http://www.geocities.com/z_design_st...ion_z28_6.html
12-26-2006, 12:36 PM
#6
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Originally Posted by VINCE
So are you suggesting I leave my current setup alone since I have the M6 transmission with my current setup?
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12-28-2006, 05:52 AM
#8
9 Second Club
then check your current speeds, versus rpm's and play with them in the calculator to see what may work best.
If you could be pulling 200+ just around max power/torque, or perhaps a little over 200mph, then you should be fine.
If you could be pulling 200+ just around max power/torque, or perhaps a little over 200mph, then you should be fine.
12-28-2006, 07:05 AM
#9
Originally Posted by stevieturbo
then check your current speeds, versus rpm's and play with them in the calculator to see what may work best.
If you could be pulling 200+ just around max power/torque, or perhaps a little over 200mph, then you should be fine.
If you could be pulling 200+ just around max power/torque, or perhaps a little over 200mph, then you should be fine.
