way to not launch, you were rolling when you started.

I'll send you a message. thanks

thanks for the advice, sure i dont need my old gears lol

sorry, that didnt post right but if you move the longest columns to the right then its got you're actuall speed at each rpm in each gear with your 4.10 final drive and stock transmission gearing. Hope it helps you out bro. And by the way, you dont want to get rid of your stock 3.27 ring and pinion do you?

Gear set: Manually entered values
Gear 1 2 3 4 5 Final
Ratios: 3.370 1.990 1.330 1.000 0.670 4.100

RPM Limit: 7000
RPM @Peak Power: 5800
Tyre Size: 245/45 x 17
Tyre Diameter: 25.68 in
Tyre Circumference: 80.68 in


Gear Mph per 1000 RPM Mph @5800 RPM Mph @7000 RPM
--------------------------------------------------------
1 5.53 32 39
2 9.36 54 66
3 14.01 81 98
4 18.63 108 130
5 27.81 161 195

Mph RPM (in Gears)
-------------------------------------------------
1 2 3 4 5
-------------------------------------------------
5 904 534 357 268 180
10 1809 1068 714 537 360
15 2713 1602 1071 805 539
20 3617 2136 1428 1073 719
25 4521 2670 1784 1342 899
30 5426 3204 2141 1610 1079
35 6330 3738 2498 1878 1258
40 4272 2855 2147 1438
45 4806 3212 2415 1618
50 5340 3569 2683 1798
55 5874 3926 2952 1978
60 6408 4283 3220 2157
65 6942 4639 3488 2337
70 4996 3757 2517
75 5353 4025 2697
80 5710 4293 2877
85 6067 4562 3056
90 6424 4830 3236
95 6781 5098 3416
100 5367 3596
105 5635 3775
110 5903 3955
115 6172 4135
120 6440 4315
125 6708 4495
130 6977 4674
135 4854
140 5034
145 5214
150 5393
155 5573
160 5753
165 5933
170 6113
175 6292
180 6472
185 6652
190 6832

Gear Change RPM drop (change @5800) RPM drop (change @7000)
-------------------------------------------------------------
1 -> 2 -2375 (to 3425) -2866 (to 4134)
2 -> 3 -1924 (to 3876) -2322 (to 4678)
3 -> 4 -1439 (to 4361) -1737 (to 5263)
4 -> 5 -1914 (to 3886) -2310 (to 4690)

well, lets do the math. if you've got the stock size tires(245/45/17) then your tire diameter should be around 25.70 inches give or take just a tad depending on manufacturer of the tires you have. With a 1.00 4th gear which is what the 98 cobra had, and 4.10 rear end, then you should be doing right around 116mph@ 6000rpm in 4th gear and you're speedo is showing what looks like 132mph? at what looks to be close to 6000rpm in 4th so its off quit a bit. I've got a program that calculates gear ratios if you'd like me to email it to you just so you can check everything over and see exactley how far off it is, I'd be more than happy to help out. ;) The thing to realize is that the faster you go, the more its going to be off. You may only be off by 7mph at 60mph, but as you go faster, the difference also increases so by the time you're doing 120, its pretty much doubled to around 14mph.

must be nice to have traction like that

My 99 GT SC 4.6 came with 3.27 gears factory and I installed 4.10's with a 26 inch tall tire and it was off almost 15 mph at that speed...need a programer or a speedcal.Its more than 7 mph fast..

thats wat i meant my bad its reading 7mph faster than it shows

6mph slower? what gear was in it before? If you came from a 308 or something similar than it would be showing alot faster than its actually going. I'm not knocking it bro....just letting you know.(if you didnt already).