explict

When buying a clutch, do I need a 10 spline clutch or 26 spline clutch?
I am assuming 10 spline..

Hufenstang

10 if you use the stock transmission

explict

Now my second question is why is there always the option for a 26 spline?

sactown

You can purchase and install a 26 spline input shaft for our cars, it is strong than the 10.

explict

Is the input shaft worth buying for my car? or is it for more higher horsepower cars?

D_Gusler

the 26 spline is deffinetely worth the money spent in your scenario. Just adds safety and a little xtra piece of mind---espescially if you race on slicks. Ive seen more than few broken trannies(input shaft rung off) on track vehicles with 500+ hp

Texotic

it's insurance. with the amount of power you're running, you might as well step up while you're replacing it.

MustangGT0405

I thought about going to a 26spline when I upgraded my clutch. I am in the 450rwhp range, but the car wont see any slicks. Maybe some DR's but my car is 99% street driven so i thought it wasnt worth it.

Plus some day I want to do a TR-6060 conversion when I can get the Viper .50 overdrive gear.

I would say if you track the car alot and run slicks I would defineatly get it, if it is a street car I would say you are fine with the 10 spline.

I would also recommend you go with the Mcleod RST clutch. It is expensive but worth it IMO. I have 2k miles on mine and it is great. Search some for Spec clutches and you will see very different stories.

Good Luck.

sactown

++++++111111 on the RST, don't go cheap on the clutch.
I am making 430rwhp and run with DR's at the track all the time, still have the stock input shaft.