I have a 1934 Ford with Flathead V8 and a NWC T5 that has a 4.03:1 first gear( too low). I want a rebuilt unit with a higher first gear. My tranny now has issues and I know it would be more cost effective to go the rebuilt route. Know anyone who sells them? I’m on Denver Metro. Sent from my iPhone using The H.A.M.B. mobile app
The higher first gear units were the WC v8 camaro/firebird flavor. The s10's will have the lower (weaker) 1st gear.
Thanks man I know. There were some 2wd pickups and some mini vans came with 3.76 low. I even saw some 3.5 in various other T5s. Looking for a good rebuilding company. Sent from my iPhone using The H.A.M.B. mobile app
His engine power does not justify a WC T5. A 3.76 gearset T5 will fix the problem. A Camaro/Firebird one might be geared too tall for the flatty.
I agree, here is a chart of the units and their gear sets... http://www.britishv8.org/articles/borg-warner-t5-id-tags.htm
One of the most common S10 T5's with the 3.76 gearset is the 13-52-145. I have used these with great success behind flathead V8's.
Thanks. I got the 13-52 list and there were tons for every car company. Seems like you know a lot. Do you think the case length and spline number would be right? Sent from my iPhone using The H.A.M.B. mobile app
13-52 is the model class. It means T5, just as 13-51 means T4 (4-speed). Don't panic if you see 13-51 cast into some of your external parts. Many interchange. As long as the sticker and metal tab say 13-52, it's a T5. The one that you have now, as long as the shifter is in the forward most position: Is from and S10 pickup. They are all the same dimension, until 1992. After 1989, they do not have a cable speedometer drive, but an electronic one.
WC and NWC both have the same torque rating [it is just a name] the main difference is in the syncros. The 2.95 1st is lower than the 2.82 1st in Ford transmissions from 32 to 64 The OP should get a NWC Camaro trans as a donor and swap over everything
If you find the right shop, there's lots of possibilities for T5 customization. Input shafts, mainshafts , gearsets, OD gears, and tail housings can be swapped around (with some limitations) to create what you need. The "right shop" will have a stockpile of T5 parts, new and old, to pick from, and a guy with some imagination and skill. Of course, that 's hard to find, but they're out there. Just as an example, I have a Ford main case with a 10 spline input shaft, 2.95 gearset with 0.76 OD, and a GM 27 spline output shaft inside an AMC forward shifter tailshaft housing. Also have WC carbon fiber synchros in a non-WC case. Your differential choice, horsepower, and RPM range will dictate what gearset you need. If I was running your combo, I'd probably go for something with a 3.35 first gear and 0.70 overdrive. You can probably get a Mustang trans and swap in your S10 tailshaft housing.
There is more than just different syncros, the bearings on the main shaft and counter shaft are stronger. Why would they put on the WC behind V8s only, and NWC behind 4cyl/6cyl? Most definitely a different torque rating.
While it's true that WC are "beefed up" have higher torque ratings, you'll generally find that T5s with low gear ratios have low torque ratings. The low gears have higher torque multiplication and are more likely to break the box. Although none of this is really relevant to Flatheads.
Most of the WC had the higher 2.95, 3.50 or 3.76 1st gear. I have found that the 4cyl s10's that don't have any power, used the low 1st gear; and they were usually NWC. There were some early 80's camaros that had were NWC that had 3.50 and 3.76 1st gears.
And bearings between the gears, and main shaft, and input shaft diameter, etc. Sent from my SM-G900T using The H.A.M.B. mobile app
Tony will fix you up. He has everything you'll ever need for any T-5! https://www.astroperformance.com/
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