Looking For Twin Traction

[dcoffield]

quote:Originally posted by dcoffield

Ok, I have a 3.31 gear axel now. Ted has a tt unit for the larger gear ratios and a 4.09 gear set. Can I put his tt unit with the 4.09 gear set in my axel?

I just want to upgrade to twin traction and need to make sure I'm getting the right thing. I want to go to a larger number gear anyway, so what Ted has sounds attractive, if it will work for me.

[Roscomacaw]

The ratio break is between the 3.73 and the 3.92, so the 4.09 TT unit that Ted has should do the trick for you.

Miscreant at large.

1957 Transtar 1/2ton
1960 Larkvertible V8
1958 Provincial wagon
1953 Commander coupe
1957 President 2-dr
1955 President State
1951 Champion Biz cpe
1963 Daytona project FS

[Stude4x4]

In agreement with Biggs. Case change is between 3.73 and 3.92

-Home of John Studebaker-

[big jim]

shore do resemble a "Detroit Locker" dont it Mr Biggs...

[dcoffield]

I thought I was clear but now am confused again. Case change? Does that mean axel case? Currently have 3.31 gear. Can I put twin traction unit with 4.09 gear in what I have?

[Roscomacaw]

No, we're not talking about the outer housing, we're talking about the "gearcase". the thing that the ring gear bolts to. There's two different gearcases that fit inside the 44 housing. One accomodates the lower numerical gearsets (up thru 3.73 ratio) and and the other, the higher numerical gearsets (3.92 ratio and higher).

Miscreant at large.

1957 Transtar 1/2ton
1960 Larkvertible V8
1958 Provincial wagon
1953 Commander coupe
1957 President 2-dr
1955 President State
1951 Champion Biz cpe
1963 Daytona project FS

[dcoffield]

Is the gearcase part of the twin traction unit?

[N8N]

Ayup.

Basically if you buy the high ratio TT unit, you can use a 3.92 or higher gearset.

If you bought a *low* ratio TT unit, you could still use the higher ratio gears, with a spacer. But it doesn't work the other way.

nate

--
55 Commander Starlight
62 Daytona hardtop

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