Driveshafs
 

Ok here is the deal:
I have 944t trailing arms. the narrow alu ones.
And a 915 trans.
Witch driveshafts and cv's can i use?

presuming your 915 has coarse splinesin the ouputs, you can use 901 output flanges and VW type1 CVs on the inner end of the drive shaft or use 930 sized output flanges and 930 sized CVs on the inner end of the drive shaft. The other option (which I used) was to redrill the 930 sized output flanges for 944/type4/VW bus sized CVs and use the CVs that came with the driveshafts.
The drive shafts you need are the shafts that come from the same year/spec car as the trailing arms came from.

forgot to mention that T-1 cv's is not an option as i plan to put out 300hp/350nm.

Driveshaft should come from a 86/87 944 car then?

then you can use 930 or 944 cvs with redrilled output flanges. Can't say what year, just make sure the car they come from has narrow aluminium arms same as yours.

I dont know if the 944 cv matches the 915 flange.
If they do you have two choices
944 N/A driveshaft and cvs they got 33 splines and matches typ 1 gearbox cvs, not an option for you, as you wrote.
The other choice is driveshaft and cvs from 944 Turbo or S2 they got 25 splines and have the same outer diameter (100mm) as N/A, but the CV and driveshaft is much tougher.

Both driveshafts are 520mm long.

//Anders

Thanks for the info!

Wil try to find S2 or 944T driveshafts , used then.

You can use the 915 SC fine splined flange. They will fitt with the 944 cv's. I'm using this combo.