T5 - 10" or 11" clutch

[John-T-53]

I've been talking with a gentleman named Tom in Michigan about getting some parts to adapt a T5 to my truck bellhousing and clutch. Does anybody have a stock clutch disc out of their vehicle right now that could tell me the I.D. of the friction surface? He may be able to get me a 14 spline disk I can use with the T5 and keep the rest of the clutch.

I have a brand new 11" clutch in the truck right now, and he suggested going with a 10" so it would shift better. Anybody got a T5 and had experience with this? I suppose I could just switch the dist to a 10" and keep the 11" pressure plate...

[Young Ed]

My current plan for my T5 is to use the clutch disk that came with it. Which was a 9in. The mopar pressure plate is 9.25. Hope it will work that way. At least to get the truck on the road. Then I'll upgrade if I have to. Oh and here is the kit for adapting a t5.

[NiftyFifty]

T5 is out of the F-Birds and S-10's right? That's a pretty light tranny if my memory serves me....does Dodge not have a 5 speed of the same era? One thing...no matter what make sure you know which one you have and fill it with only GM SYNCROMESH (sp) oil...some used ATF, but my F-Bird used the GM oil and the dealer told me the wrong stuff...was screwed within a week.

[Don Coatney]

I've been talking with a gentleman named Tom in Michigan about getting some parts to adapt a T5 to my truck bellhousing and clutch.

I have a brand new 11" clutch in the truck right now, and he suggested going with a 10" so it would shift better. ..

Did this Tom guy say why the T-5 would shift better with a 10" clutch? I dont inderstand the logic???

[davidross]

When you shift gears the syncros basically have to speed up or slow down the input shaft/clutch disc to engage the desired gear. A big truck uses a large diameter clutch to take advantage of square area. A smaller engine, less load can take advantage of a smaller clutch/ less mass to speed up or slow down = faster shifts less wear and tear on the tranny.

[DanOlson]

I put an 11" disc in my B-4-C when I did my T5 swap last winter and it shifts just fine. Of course my speed shifting days are long past but it is a sweet ride being able to downshift anytime you want.

Dan

[John-T-53]

Did this Tom guy say why the T-5 would shift better with a 10" clutch? I dont inderstand the logic???

I'll ask him for some of his reasoning when I get back to him, but first, he needs the I.D. of a stock clutch friction area so he can find a new disk for me.

....so anybody got a clutch apart right now that could do a quick measurement for me?

Thanks in advance!

[Young Ed]

I believe I have an 11in one apart on my workbench I can measure. But what size is the one you have now? It could be 10 or 11.

[John-T-53]

I have an 11" in right now. I guess that leads me to wonder do 10 and 11s have the same I.D.? Thanks Ed!

[Young Ed]

Well I have the 11 and a 9in car one to measure. I will check. You need from the friction surface across for the ID?

[John-T-53]

Yup, the inside diameter of the friction surface, or the diameter of the center section.

[Don Coatney]

This was my original P-15 clutch disc.