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Unread 02-22-2012   #1 (permalink)
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Default stock T5 gear set ratio?

89 5.0L

Whats the stock gear set ratio for the T5 of that year?
I do not have the original tranny.
Actually I have a 4 cyl and I have a rebuild kit and am going to buy the full gear set (with input shaft) to convert it into what would be the stock T5 for that car.
Is it 2.95 or 3.35?
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Unread 02-22-2012   #2 (permalink)
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3.35 1st is stock for a V8 T5. I'd make sure what your planning is going to be economically feasible before you begin... This may help you out:

All about T5s
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Unread 02-22-2012   #3 (permalink)
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Quote:
Originally Posted by YLDPONY View Post
3.35 1st is stock for a V8 T5. I'd make sure what your planning is going to be economically feasible before you begin... This may help you out:

All about T5s
While that article is mostly on-track there are so MANY little things in it that are just SO, So wrong! It was copied word for word from another website that has since pulled it...

That chart, however, at the bottom of the page is a copy of the BEST Ford T-5 chart around!

An 89 would have had an 052 Counter Gear and the ID tag would have read 1352-169.
Ratios for that set are: 3.35 1.93 1.29 1.0 0.068

You will also need a new front bearing retainer because the 4-cylinder version is not compatible with the bearing used on the 8-cyl input shaft. Not to mention that it will be the old aluminum type.

If you are buying new gears, get the 2.95 gear set. It is stronger than either of the two 3.35 sets that were produced.
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Unread 02-23-2012   #4 (permalink)
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Quote:
Originally Posted by SPeace-ATL View Post
While that article is mostly on-track there are so MANY little things in it that are just SO, So wrong! It was copied word for word from another website that has since pulled it...

That chart, however, at the bottom of the page is a copy of the BEST Ford T-5 chart around!
I never even read the article, I just found the chart useful. Thanks for the heads up

I will also agree, a 2.95 1st gearset is a better deal.
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Unread 02-23-2012   #5 (permalink)
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The fifth gear pair 27t/59t that comes in a 4-cyl T5 is the same as comes in a 3.35 V8 T5 and the 99-04 V6 T5. This would have a ratio of 0.68 in a 3.35 T5.

If you keep that fifth gear pair and install a 2.95 gear set, the ratio for fifth will be 0.5911 which is pretty tall. Some really like it for the highway economy.

The normal fifth gear for a 2.95 T5 is 0.63 which comes from a 25t/51t pair. These can be found in a 94-98 V6 T5.

There are other gear pairs that will yield Fifth gear ratios of 0.73 and 0.80 in a 2.95 T5.
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Unread 02-23-2012   #6 (permalink)
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Thanks guys, I really appreciate the advice.

To recap - I already have the rebuild kit with all bearings and syncros, a new steel bearing retainer (V8) plus a 4-cyl tranny that is in "nice" condition to use for the build. As such, it is economically feasible.


Q1: Can someone confirm to me that the main long shaft itself is the same between the 4-cyl and the 8-cyl T5? I am assuming yes, so that I can re-use my 4-cyl shaft with the new gearset and T5 rebuild kit (V8).

Q2: I would indeed like a lower RPM fifth gear. The recommendation is to install a 2.95 gear set, however retain the gears for fifth? Those are the ones in the extension housing, correct?

Q3: Given what I have, I am thinking all I need is the complete 2.95 gearset, correct? (includes input shaft, gear shaft, and the gears).

thanks!
Greg
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Unread 02-23-2012   #7 (permalink)
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Quote:
Originally Posted by greg_mustang View Post
Thanks guys, I really appreciate the advice.

To recap - I already have the rebuild kit with all bearings and syncros, a new steel bearing retainer (V8) plus a 4-cyl tranny that is in "nice" condition to use for the build. As such, it is economically feasible.


Q1: Can someone confirm to me that the main long shaft itself is the same between the 4-cyl and the 8-cyl T5? I am assuming yes, so that I can re-use my 4-cyl shaft with the new gearset and T5 rebuild kit (V8).
Yes, the main shaft is the same between a 4-cyl and a V8 Mustang T5.


Quote:
Originally Posted by greg_mustang View Post
Q2: I would indeed like a lower RPM fifth gear. The recommendation is to install a 2.95 gear set, however retain the gears for fifth? Those are the ones in the extension housing, correct?
Yes, the fifth gear pair is in the extension housing. As I was saying in the earlier post. The 4-cyl should have a 27/59 pair will yield a 0.59 ratio for fifth which will chug along economically on the highway. A racing fifth gear pair is available that will give a peppy 0.80 fifth gear. Re-read what I said above about available ratios.


Quote:
Originally Posted by greg_mustang View Post
Q3: Given what I have, I am thinking all I need is the complete 2.95 gearset, correct? (includes input shaft, gear shaft, and the gears).

thanks!
Greg
Input, counter gear, first gear, second gear, third gear.

They are available in the top-quality OEM in Tremec-brand boxes, or in generic white, blue, or plain brown boxes that were made overseas and will work, but may not be as good.

You will need to choose the input shaft that is NOT for the T5Z so that it will match your output shaft. You need the 24t one with the part number that ends in "020."
The T5Z one ends in "060." Yours will have the 15 loose roller bearings and the T5Z uses a caged, tapered bearing set.

To reconfirm for you, all you need to convert a 4-cyl T5 to a Fox v8 type is the gears, the rebuild kit and the front retainer.
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Unread 02-23-2012   #8 (permalink)
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THANK YOU!!!

i am ordering the 2.95 gear set today from thegearbox.org
unless you know of a less expensive alternative (costing me 445$ shipped to Canada).


Greg
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Unread 02-23-2012   #9 (permalink)
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Quote:
Originally Posted by greg_mustang View Post
THANK YOU!!!

i am ordering the 2.95 gear set today from thegearbox.org
unless you know of a less expensive alternative (costing me 445$ shipped to Canada).

Greg
Those would be the imported aftermarket "replica" gears at that price.
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