Borg Warner T5 Gear ratio??

[Husker]

Hello,
I picked up A T 5 Yesterday the tag reads 1352-193. Come out of a 90 S-10 so the guy said.
.86 and .72 fifth gear being shown in my searches. So I need to know if this sounds like a good way to check.

I printed a circle with the 360* printed, cut the center out to fit over throwout bearing surface. Marked both end of the shafts at 12:00 lined the input shaft up with 0* . Turned the output shaft 360*, the Input shaft was sitting at about 310*.
I divided 7.2 by 360 and come up with 50.
Divide 8.6 by 360 is approx. 41.8
Anyway if math is correct the Input shaft turned .72 compared to Output shaft and left 50* left.
Hope this is not to confusing.
The above was before Edit.

I think I figured out what I needed. If it was .72 The input shaft should have turned less than 3/4 of 1 revolution. So I think I have the .86.
Anyway if math is correct the Input shaft turned .72 compared to Output shaft and left 50* left.
Hope this is not to confusing.
Some sites show 1352-193 as .86 fifth Gear and the others show .72.

Any help would be helpful.
Ron

[Husker]

It is going to go in My 68 Short box 2WD with a 250 ci and 3.73 rear. If it is the .72 Fifth.
Ron

[geezer#99]

According to this list it's from a 4 banger. Is it gonna be strong enough or even bolt up to your bell?
http://www.britishv8.org/articles/bo...t5-id-tags.htm

[Husker]

Should be strong enough It's not a hot rod. I may have to get a shim to go around the Transmission piece that fits in bell housing. Heres a a Good write up.
http://67-72chevytrucks.com/vboard/s...d.php?t=438224
Ron

[Wrenchbender Ret]

It will fit with the few normal modifications or the available spacer. It is plenty stout for a 250. I run them behind 350 V-8s. The .086 wont do you a whole lot of good.

[Husker]

Can the 5th gears be changed out? Have not found a lot on the gear change.
Thanks for reply
Ron

[geezer#99]

THat would only change your rpm by about 400rpm with the .72 o/d at 70 mph.
Your six banger might not have enough oomph to pull down that low. You might be shifting back to 4th all the time.

[Lugnutz65]

I specialize in adapting T5s for our old trucks.
The 13-52-193 tag should have the 0.86 overdrive gear according to THIS CHART.

First gear will seem pretty low but I have helped many folks get them into their trucks and they say that first gear is kinda low but isn't that bad. After all, you will spend very little time in first.

A T5 with an 0.86 overdrive works really well with a 3.08 rear axle gear. If you have a 3.73 (very common) then you should search for a 0.72 overdrive gear. The 0.72 OD gear is perfect for a 3.73 rear and it's what I have in my truck with an inline 230ci.

You don't need the adapter plate if you do a Jeep input shaft swap. LINK HERE

Here's my BLOG with a ton of T5 info. HERE I show how to calculate the gear ratios inside a T5. If you want to do it accurately, make sure you do 10 revolutions.

[Husker]

Lugnutz where does one find a Jeep shaft? Thanks for info.
Ron

[Lugnutz65]

Originally Posted by Husker

Lugnutz where does one find a Jeep shaft? Thanks for info.
Ron

You can get them on eBay. Look for Jeep T5 shaft with 10 splines. You do NOT want the 14 spline version. Cost is about $70 delivered. They only work with the S10 type T5s.

[KVB]

Originally Posted by Lugnutz65

I specialize in adapting T5s for our old trucks.
The 13-52-193 tag should have the 0.86 overdrive gear according to THIS CHART.

First gear will seem pretty low but I have helped many folks get them into their trucks and they say that first gear is kinda low but isn't that bad. After all, you will spend very little time in first.

A T5 with an 0.86 overdrive works really well with a 3.08 rear axle gear. If you have a 3.73 (very common) then you should search for a 0.72 overdrive gear. The 0.72 OD gear is perfect for a 3.73 rear and it's what I have in my truck with an inline 230ci.

You don't need the adapter plate if you do a Jeep input shaft swap. LINK HERE

Here's my BLOG with a ton of T5 info. HERE I show how to calculate the gear ratios inside a T5. If you want to do it accurately, make sure you do 10 revolutions.

Jay, thanks for your help in getting my T5 modified, installation was a breeze. Where did you get the shifter in the pic, and what did you use to mount it to the transmission?

[Lugnutz65]

Originally Posted by KVB

Jay, thanks for your help in getting my T5 modified, installation was a breeze. Where did you get the shifter in the pic, and what did you use to mount it to the transmission?

THE SHORT ANSWER: That's a salvage yard shifter handle and a T56 shifter base I bought on eBay.

I sold the T56 shifter base because it isn't a short throw design. With the long handle, I wanted a short throw base so I modified a stock S10 short throw base - LINK HERE.

The T56 base comes in different styles. Some have a longer Mustang bolt pattern and some have a smaller Chevy pattern.

Helpful links and pics:
Lokar sells similar handles but I have not found a vendor with one exactly like mine. Speedway Motors sells them as well as other vendors. THIS ONE is similar. THIS ONE TOO.

Lokar shifter handles are designed to bolt to the shifter base. The stock T5 shifter base has a threaded stem, so you would need to modify a stock T5 stem to get the handle to bolt on similar to what I did. Or you can buy and aftermarket shifter base. CORE SHIFTERS sells nice short throw shifter bases. Not cheap and currently sold out.

Lastly, you can make your own handle like mine using the drawings I made.

[Husker]

Hey Lugnutz,
Great Blog, Have been using it for My T5.
I am in need of a 8 Tooth Drive gear for my speedo. I have 28.5" tires and was going to use 8 Tooth Drive and 21 tooth Driven gear. Can't seem to find a 8 Tooth Drive. Anyone out there have one they want to get rid of?
Thanks
Ron

[Lugnutz65]

Originally Posted by Husker

Hey Lugnutz,
Great Blog, Have been using it for My T5.
I am in need of a 8 Tooth Drive gear for my speedo. I have 28.5" tires and was going to use 8 Tooth Drive and 21 tooth Driven gear. Can't seem to find a 8 Tooth Drive. Anyone out there have one they want to get rid of?
Thanks
Ron

The T5 came with either a 7 tooth or 9 tooth drive gear and they are still available new from LA Speedometer Gear. Here is their ebay link.
They sell driven gears and drive gears too. I don't think you will find an 8 tooth drive gear with the right size and splines.

My tires are 235/75/R15 and 28.8" tall and I have a 3.73 rear. I use a 7 tooth drive gear and maybe an 18 tooth driven. I can't remember exactly.

[Husker]

Got the Rebuild of My T5 done with the help Of Lugnutz65 Blog, Great site.
Now I am need of Lubrication it is a NWC. Many say ATF and also some say SAE30 oil. Which is best Thanks
Link to Great Blog http://www.lugnutz65chevystepside.weebly.com/
Ron

[Lugnutz65]

Originally Posted by Husker

Got the Rebuild of My T5 done with the help Of Lugnutz65 Blog, Great site.
Now I am need of Lubrication it is a NWC. Many say ATF and also some say SAE30 oil. Which is best Thanks
Link to Great Blog http://www.lugnutz65chevystepside.weebly.com/
Ron

Thanks for the kind words.
I have confirmed through numerous sources that even the non-world class T5's used ATF. Dexron II ATF was used in T5s but is no longer available.
You should use Dex/Merc ATF. An alternative would be Penzoil Synchromesh for a non-world class T5. ATF will give a smoother shift than synchromesh.

[Wrenchbender Ret]

Can a guy change the front shaft without pulling the rear housing?
George

[Husker]

Yes four bolts. Then you can put a ten tooth Jeep shaft on. Here is how to do it Courteous of Lugnutz65
Ron
http://lugnutz65chevystepside.weebly...ter-plate.html