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For the C5 Torque Tube input shafts, do they share the same size bearing through out the years?
Reason why i ask is I want to collect them for a conversion kit I designed for the Porsche 928 to install the Vette TT and trans to The 928 engine. I've done one already using the C5 input shaft and torque tube. Now I want to simplify the process by modding the C5 input shaft to the Porsche spline pattern of 1" x 23....
Still looking for a used C5 clutch input shaft if anyone has a spare. Stripped/broken splines or Pilot tip is O.K. as I'll be machining the biscuit flange off anyways. Just PM
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Pretty sure all the C5 pilot bearings (needle bearing design) are the same. Beginning with the C6 models with LS2 engines (2005+) I think they went to a larger diameter sealed ball bearing.
Did the I.D. of the front TT bearing change also or just the O.D. in 2005?
This would clear the air. Thanks for the info. Right now we are working on putting the Vette auto TT/trans into a 928 and that doesn't require the special input shaft design. I will even do this myself, but use an L33 engine.
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
I think the ID is the same but the choice of which bearing is used is determined by the "input" shaft. The rear of the cranks are stepped and can accomodate either, but it's the "input" shaft that makes the difference, being either longer (C5) in length or shorter (C6) due to the difference in the TT assemblies themselves. BTW, the smaller (C5 style) is also used in the F body cars as well, except the new generation Camaro.
Here's a thread posted some time ago by Scoggins Dickey Performance Center (GM dealer and GM high performance specialists).