T56 help

[Cobragixxer9994]

Everyone's thoughts on viper spec t56 compared to t45 with 4.10 gears and and vortech si 14 psi.
Will it be slower ?
Yes I have searched but I come up with a ton of mixed reviews.
Edit (running 26 inch drag radial)


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[01yellercobra]

You'd probably be a little faster. The first gear should calm it down a little off the line. IIRC those have the .50 6th which would make cruising on the freeway a little nicer.

 

[03' White Snake]

I have an excel sheet with tire sizes and gears to calculate speeds for the magnum. If you can give me the gear ratios I can plug them in and give you what you are looking for.

 

[robvas]

Here's the file I use

Transmissions.xlsx

 

[03' White Snake]

Here's the file I use

Transmissions.xlsx

Similar to mine.

 

[Cobragixxer9994]

Thanks for the responses
Will I have to correct my speedometer when I do the swap

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[01yellercobra]

You shouldn't. I went from the 3650 to a T56 in my 01 and everything read fine.

 

[Cobragixxer9994]

Ok cool thank you my t56 arrives tomorrow I can't wait to get started

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[01yellercobra]

FWIW, putting in the six speed was one of the best things I did to that car. The closer gears made it much better to drive.

 

[Cobragixxer9994]

He'll yea its the next step I could take aside from doing forged internals I'm already at 500+ to the wheels
I received the trans today and everything looks great except it has an adjustable pivotball which I don't know how to set bit I'm sure there are write ups

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[DSG2003Mach1]

Similar to mine.

View attachment 1828683

thats cool as well - can attach it like robvas or can I DM you an email address?

 

[Cobragixxer9994]

Does anyone know a part number for the output shaft seal . I bought a timkin 710426 and the seal inside diameter is too small even though it's listed for t56

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[robvas]

GM 12530278 Manual Transmission Output is what I used...i think?

 

[Cobragixxer9994]

Are the pivot stud the same between t56 and t45

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