jrherald420

i was under the impression that the 3650 didnt appear intill mid 2001-2004 in the GT's i always thought that the 3550 was pre 99.

defconfire

do you mean the T-45?

jrherald420

i dont know what i mean the jagermister is kinda kicking my azz now. i just thought that the 3650 wasnt released till mid 2001-2004. ****s i dont know right now sorry.

defconfire

yeah it was,

But when you said "I always thought that the 3550 was pre 99." I was like wtf?

jrherald420

yeah i guess i ment pre mid 2001.. like i said jagermister and rockstar are in full swing right now!!!! lol time for another.....

defconfire

No, I meant i had never heard of 3550!

lol you'll get what I'm saying eventually

jrherald420

ill read it again in the morning!!!!lol

StriderTacticaL

Cliffyk are you sure youe guessimator is somewhat accurate? I have a stock gears and at 4th gear at 40mph I am at about 2000rpm but it days 3.73's

makriluc

jrherald420, the tranny was changed on my Cobra, when, I don't know.

StriderTacticaL, I'm like you. I hit fourth gear so quickly, It' s unbeleivable. I used to own a 95 gt and the gear ratio was as any other car I drove. But this one (Cobra), I use fifth gear in city driving or else I'm often in the 3000 rpm range.

cliffyk

I'd say your speedometer or tach are inaccurate (or you don't have strock tires, or do have 3.73s). I know it's not a perfect algorithm, but it can't be that far off.

At 2k rpm in 4th you should be going 45 or so--here's is my "speed in each gear calculator", and since this is not reverse engineering it is accurate.

With stock tires at 40 mph in 4th, with the 3.27s, you should be down around 1750 rpm.

Try using a higher speed (both the speedometer and tach will be more accuarte at higher speeds), and make sure you interpolate the numbers as well as you can.

For the reverse math to work the speed and rpm need to be within 3% to 4% accurate.