Engine and Transmission Tech

While my transmission was on the floor waiting to go back in I thought I'd check the ratios.

This is a T5 I bought years ago to go behind my Olds/Buick 215/292. The tag (13-52-015) says it's from an '83 V6 Camaro, but it was sold to me as rebuilt, and the input shaft is definitely V8.

Spinning and counting the input and output shafts show the common 2.95/1.94/1.34/1.00 ratios for the first 4 gears (and reassures me I can count) but 5th gear comes out to .56. I recounted 3 times, same numbers, the nearest whole number of revolutions is 9 front to 16 rear.

I can't find reference to this tall a 5th gear in a T5 anywhere on the interwebs. I'm familiar with the BritishV8 reference table for T5s and even have a hard copy in my paperwork, but even that only shows overdrive ratios to .63.

I'm wondering what oddball sprockets were thrown into this box when it was rebuilt. I knew 5th was tall, at Road Atlanta I could hit the rev limit in 4th at about 105 but further acceleration was sloooow.

Anyone ever hear of a T5 with this ratio?

Cheers,
John

John,

No one answered!

What is the spline count of that T5?

There were never any V6 T5 with the 2.95:1 1st gear.

There are some aftermarket 5th gears out there however.

Send me an email and I might be able to assist.

-BMC.

With those ratios you have a v8 box for sure.
Seems to me that you have the cluster and counter shaft from a 2.95 v8 in a v6 case with a v6 4.03 - 0.76 5th gear set.
That should give you an actual 0.55 to 1. 5th gear ratio.

Hope that helps.

Live like you mean it.
Fred

Thank you Fred, that makes sense.

I've got a T5 question and thought I would tack it on to the end of this thread.I'm going to use a Ford T5 on my 2.3 Turbo engine. I have a Chev T5 with the good ratios 2,95 first and .63 overdrive. Will these gears go into the Ford case with no problems? It might sound like a dumb question but it sure would be nice to know.