What are the Stock gear ratios are in a T-5 in an 88 Mustang - Forums at Modded Mustangs
 
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post #1 of 12 Old October 24th, 2007, 08:12 PM Thread Starter
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What are the Stock gear ratios are in a T-5 in an 88 Mustang

Anyone know the stock gear ratios for a T-5 in an 88 mustang gt?

Are 87-93 all the same ratios? (tranny wise)
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post #2 of 12 Old October 24th, 2007, 09:30 PM Thread Starter
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post #3 of 12 Old October 24th, 2007, 10:05 PM
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no they are not all the same



this is from 86.5-89 mustangs 3.35 1.93 1.29 1.00 0.68

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1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600
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post #4 of 12 Old October 24th, 2007, 10:26 PM Thread Starter
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Ok, thanks alot. The reason I was asking was because I was comparing what the RPM would be on an 88 Mustang GT with a T-5 and T-56:

At: 85mph with stock 2.73 rearend in 5th gear with T-5

And: 85mph with 4.10 rearend in 6th gear with T-56

It seems like the RPMs are about the same.

I found this helpful website to calculate all of this if anyone is interested. The website says it's not 100% accurate, but it seems pretty damn close to me. Well here it is if no one has established this yet:

Note*: I'm not sure if this site pertains to a certain vehicle, but i don't think it matters because i tried the calculations on some other website.

http://tech.oldsgmail.com/axle_RPM.html

I'll post it on a new topic also.
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post #5 of 12 Old October 24th, 2007, 10:30 PM
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this is darrells sight http://webpages.charter.net/darrell1/calculators.html

2004 tahoe z71 Daily
2004 BBM Gto ls1 6 speed 57,000 miles
1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600
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post #6 of 12 Old October 24th, 2007, 10:37 PM Thread Starter
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Oh, ok.......thats good to know.


Well anyway, that's gotta be pretty sick with the T-56 running a steep ass gear and still being able to cruize like normal when you want.
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post #7 of 12 Old October 24th, 2007, 10:40 PM Thread Starter
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Ok, i've just noticed something. I'm not trying to step on toes here but on Darrel's website, it doesn't give the option of entering Tranny ratios.........does it?
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post #8 of 12 Old October 24th, 2007, 10:40 PM
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Quote:
Originally Posted by NYHigH
Oh, ok.......thats good to know.


Well anyway, that's gotta be pretty sick with the T-56 running a steep ass gear and still being able to cruize like normal when you want.
they are very nice transmissions but they are just so pricey

2004 tahoe z71 Daily
2004 BBM Gto ls1 6 speed 57,000 miles
1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600
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post #9 of 12 Old October 24th, 2007, 10:46 PM
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i jus went to the 1st web site (not darrels) and it says tht at 90mph in 4th gear i should be at 4392 rpm and in my car it says 5000. i've got 3.73 gears stock tranny 5spd and i put 2 different speedo gears in and they both gave the same reading. anybody no whats wrong with my car

89 gt 3.73 gears, full exhaust, holley system max2 intake manifold, 70mm throttle body, jet chip
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post #10 of 12 Old October 24th, 2007, 11:10 PM
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Quote:
Originally Posted by NYHigH
Ok, I just thought of something after seeing the difference in the 1st gear ratios between:

T5: 1st gear @ 3.35 ratio with stock 2.73's at 25mph= about 3000RPMs
1st gear @ 3.35 ratio with 4.10's at 25mph = about 4500RPMs

T56: 1st gear @ 2.66 ratio with 4.10's at 25mph = about 3500 RPMs


Doesn't seem like your gaining much. What's the point of spending 3gs on a T56? The whole point is the low first gear but it seems the 2.66 gear on the T56 brings it right back to stock WTF?
i would spend my money somewhere else and if a new transmission is needed i would buy a tko600 it will handle more than the t-56 but it only has 5 gears but who needs a 6th gear but if you had 4.10's you could run much faster on topend if thats what your into

2004 tahoe z71 Daily
2004 BBM Gto ls1 6 speed 57,000 miles
1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600
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post #11 of 12 Old October 24th, 2007, 11:11 PM
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Quote:
Originally Posted by cali 5.0
i jus went to the 1st web site (not darrels) and it says tht at 90mph in 4th gear i should be at 4392 rpm and in my car it says 5000. i've got 3.73 gears stock tranny 5spd and i put 2 different speedo gears in and they both gave the same reading. anybody no whats wrong with my car
the stock guages are not accurate especially the tachs

2004 tahoe z71 Daily
2004 BBM Gto ls1 6 speed 57,000 miles
1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600
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post #12 of 12 Old October 24th, 2007, 11:17 PM
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i got an aftermarket tach also and they both read about the same

89 gt 3.73 gears, full exhaust, holley system max2 intake manifold, 70mm throttle body, jet chip
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