what input shaft do you have?

[svtjoe123]

KBSTEVE is running 630 wheel and an RST on the stock 10 spline, has been for a year now goes to the track once every couple months and races on the highway some, also his DD to and from work and school.

It seems this is the formula:
Stock clutch + stock tires= 10 spline ok
Sticky clutch + street tires= 10 spline ok(KBSTEVE for example)
Stock clutch + sticky tires= 10 spline might be ok if you slip the clutch off the line
Sticky clutch + sticky tires= Plan on the 10 spline breaking.

It also seems that when people swap to a steel flywheel they are IMMENSELY more likely to break a 10 spline on a launch regardless of how sticky the clutch is. The steel flywheel cars don't bog on launches like the aluminum flywheel cars do, and the bogging seems to save the 10 spline.

So my .02 is if you're going to be spending anytime driving with some sticky tires and you have a grabby clutch, ditch the 10 spline.

 

[Great8]

26 spline, SPEC 3+, 421/391. :shrug::shrug::shrug:

 

[FatalBite]

Liberty 26 spline here

 

[Bdubbs]

I voted 26 spline, but it won't get installed until spring. My car only has 23k and it's only had the mods listed in my sig for 3k miles. I have some loud metallic sounds coming from the transmission area, so I'll be doing the rxt clutch, along with fidanza flywheel, 26 input shaft, FR TOB, pilot bearing, lethal tob tube, ect.

 

[truculentSVT]

d&d 26 spline 720rwhp/700trq on a mustang dyno

 

[05satinGT]

Stock everything for me. Just got the cobra. Probably has around 420 rwhp now. Should have 480ish by spring. Once the stock clutch goes I'll replace the stock 10 spline with a 26.

 

[Tims97SVT]

As simple as it is to install a 26spline you have no reason not too.

10 spline with roughly 500whp and Fidanza 4.3 the input was starting to twist.
26 spline with same power and dual kustom clutch seams good. Only 342 miles on it tho.

 

[DSGWhippedSnake]

26 with a fidanza 4.3 445/450 here..

 

[snakezilla]

d&d 26 spline, RXT, and all the other stuff in the mail...

 

[dsmith26]

D&D 26, RXT, 620hp. If you do any launching on a prepped track with a good tire, 26 spline is a must IMO.

 

[NateV8]

I plan on doing a 26 spline input shaft upgrade this spring. A couple people mentioned that it is easy to install, is it really? I have never done a clutch before but I'm sure I can figure it out with the help of some friends but I'm kind of nervous about installing the input shaft myself instead of taking the tranny to a shop.:shrug:

 

[Double-D]

I plan on doing a 26 spline input shaft upgrade this spring. A couple people mentioned that it is easy to install, is it really? I have never done a clutch before but I'm sure I can figure it out with the help of some friends but I'm kind of nervous about installing the input shaft myself instead of taking the tranny to a shop.:shrug:

http://www.svtperformance.com/forums/driveline-216/808526-mcleod-rxt-26-spline-input-install.html

Only you can say whether you are comfortable doing it or not.

DD