Hey everyone,

It's been so long (at least 25 years) since I've removed a C3 Trans - I think I'm having a mental block....... boy, now that I'm 50, the mind is starting to go!! )

I was in a car accident back in Jan 2015 and am still having back problems so I'm actually getting ready to sell some of my "duplicate C3 stuff" - Frame, Manual Trans, Flared Body etc and I'm in the process of moving the frame and other items from one garage back to my home, I can't seem to remember if the trans was a close or wide ratio. (Original setup was , "I thought" L48 and close ratio).

On the rolling frame, I have the 4 bolts on the trans out, along with the trans mount bolts, and the engine supported. Bell housing is still connected.

Can I remove / slide the T-10 back so I can verify the marks / lines on the spline, and then slide it back without any issues ? (I've slid it back about 3" or so but stopped and figured I'd ask just in case).

I think I've done this in the past without any issues on various old manual transmissions , but for the life of me I can't remember. Will the clutch fork, throw-out bearing etc "stay in place" without "shifting / moving" so I can verify the marks on the spline then slide the trans back in?

Just thought I'd ask to be sure... (Boy, getting old sucks - very frustrating that I can't seem to remember something as simple as this!)

Thanks for the input...

 

Do not see any reason that you can't do what you want.

 

Hi 76,
I believe the side of the transmission case at the rear right-side flange will have a stamp indicating how the transmission was originally assembled/built. 2 letters indicate close or wide ratio.
(Is that what you're trying to determine?)

Have you looked for those?
Regards,
Alan

 

Yes - You can pull the transmission back, or even out. The clutch fork, throwout bearing, etc. will all stay in place and you can simply pull the trans out. Sometimes you have to wrestle a bit to get them back in - a old/used yolk in the back of the trans can help with turning the front shaft and will keep the backend sealed up.

Joel

 

Thanks for the confirmation everyone. I thought I could remove the trans and then reinstall - but it's weird when you just can't remember things like that!! I just wanted to check to be sure.

Alan 71,

I'll have to check for that code. I was always under the impression that (Unlike the Muncie Transmissions) that there was no code to identify close or wide ratio. I always thought the spline was the only way to tell. I'll check for any codes as soon as I get home..

Thanks to everyone., Better safe than sorry. Not that it's a hard job (especially on a bare frame), but I just wanted to take a quick peek. Thanks again.

 

Hi 76,
You could well be right!
I lose my way pretty quickly once the cars get beyond 1972!
Regards,
Alan

 

Hey I hear ya'.

I did have a chance to look this morning and can't seem to any code that would verify ratio. I did hear that in the past and always thought was a bit odd.

At first it didn't look like it was going to "go" but after jacking up the engine a bit more to a little better / straighter angle, I was able to pull the trans out and verify it has 3 rings on the input splines - making it a wide ratio. It pretty much went right back together as well.

 

Only a suggestion and not saying it will give you the answer but can you put two 6" bolts to hold the trans, slide it along the bolts far enough to see the input shaft through the clutch fork opening in the bellhousing?