904 input shaft for A413-Supplier listed.

Every so often I see someone mention using a 904 input shaft to beef up their A413 trans. Is this shaft usable as is or does it need to be modified to fit? I'd like to build my automatic as strong and reliable as possible. It will be going onto a 16V 2.5 hybrid which I expect to have 500 HP.

the 904 splined 300m input shafts for the A-413 are available at coan racing transmissions

price is $340.00 per unit contact (Jason)

www.coanracing.com

all you need to do to use this shaft is have your torque converter modified
to acept the 904 size splines

your torque converter will need to be modified to fit the bigger input.

What works with 5 speed trannies?

Is this confirmed? I know I might be interested in a few. Thanks!

-Brian Slowe
87 Shadow "BSX"
10.24 @ 134.9

Quote:

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Originally Posted by Ondonti

What works with 5 speed trannies?

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I don't think anyone has ever sheered an input shaft on a 5speed, not even Wallace or 4SFED4. Maybe cryo treating?

Quote:

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Originally Posted by turbovanman

I don't think anyone has ever sheered an input shaft on a 5speed, not even Wallace or 4SFED4. Maybe cryo treating?

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Why has noone sheered a 5 speed shaft. That seems crazy. Oh well, Im quite sure I will sheer the small spline in my 3.50 tranny this season if I get the boost up.

Quote:

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Originally Posted by turbo2point2

Is this confirmed? I know I might be interested in a few. Thanks!

-Brian Slowe
87 Shadow "BSX"
10.24 @ 134.9

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Yes you can contact Jason @ coanracing 1.765.456.3957

that is where I got the input shafts for the smp SC Jason can also build you a wicked torque converter

the SC started to run fast when we got the new torque converter from coan



Denis

Quote:

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Originally Posted by C&DAutosports

the 904 splined 300m input shafts for the A-413 are available at coan racing transmissions

price is $340.00 per unit contact (Jason)

www.coanracing.com

all you need to do to use this shaft is have your torque converter modified
to acept the 904 size splines

---

How much is does the TC run?

Quote:

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Originally Posted by Ondonti

Why has noone sheered a 5 speed shaft. That seems crazy. Oh well, Im quite sure I will sheer the small spline in my 3.50 tranny this season if I get the boost up.

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Because you cant brake torque a 5-speed. Brake torquing at the line puts a TON of stress on the input shaft. A 5-speed doesn't really see that much stress until the motor builds boost and is already rotating.

I have only seen one input shaft break on a manual tranny. It sheared-twisted like a drill bits' tip.

I think I have done somthing similar and have not removed the mtx yet to see what broke. That is why a am installing a built ATX myself. I vote that this get s turned into a sticky!


Dave B.

I moved it to the FAQ section, :thumb: