Re: 1968 CY Trans details
 

[ QUOTE ]
If you have to pull it...bring it out this way. It'll give you a chance to hook up with Sam and me...heck, I'll spring for a barbeque at my place...

[/ QUOTE ]

I went home at lunch and started thinking about trying to pull the motor and tranny myself. The motor is fine but I might as well do a little detailing while it's out. You may see me sooner than later...crank up the barbie!

Re: 1968 CY Trans details
 

[ QUOTE ]
this may be a good lead. I noticed the ccar didnt have it's original tranny pan...it looks deeper than stock and it's finned.

[/ QUOTE ]
It's indeed a long shot, but I learned the hard way...just wish I'd learned *before* driving all the way to Norwalk! https://www.yenko.net/ubbthreads/imag...ins/tongue.gif

Re: 1968 CY Trans details
 

Jeff- you may wish to call my friend and bounce your symptoms off of him over the phone. Rick @ 480.987-3756. Tell him his neighbor, Sam, sent you.

Re: 1968 CY Trans details
 

Jeff, I have spoken to Sam's buffy from GM...he knows his stuff. As for the deep pan...it won't impact performance provided the additional fluid it needs has been added. You may also want to check the governor to make sure there is no damage to the plastic gear. That tranny should shift at approx. 6100-6300 rpm under full throttle...both 1-2 and 2-3. The modualtor won't affect what you are describing. When I service my hi-perf trannys we use a flushing machine that my local tranny guy has...it really works to get any debris or metal filings out of the system. A reputable trany guy can pull that unit out with the motor in the car and solve your issues...it takes quite a bit to hurt these hi-perf TH400's.

good luck..wilma

Re: 1968 CY Trans details
 

[ QUOTE ]
[ QUOTE ]
If you have to pull it...bring it out this way. It'll give you a chance to hook up with Sam and me...heck, I'll spring for a barbeque at my place...

[/ QUOTE ]

I went home at lunch and started thinking about trying to pull the motor and tranny myself. The motor is fine but I might as well do a little detailing while it's out. You may see me sooner than later...crank up the barbie!

[/ QUOTE ]

Either way, tranny or not...come on out. I'll get the 'cue going... https://www.yenko.net/ubbthreads/imag...mlins/grin.gif

Re: 1968 CY Trans details
 

I just pulled the tranny and semi-steamed off a mojority of the gunk. If anyone is interested, I can take a few pix.
- the 6 lug conv had the E7 on it
- a few darker big C's ink stamped
- I found 1 stamped letter J
- the outer case had a CX ink stamped on the passenger side 2 o clock position.

I couldnt find a VIN stamped anywhere. let me know if anyone needs to see pix of what I found. I can take them tonight.

Re: 1968 CY Trans details
 

Take 'em then post 'em! https://www.yenko.net/ubbthreads/imag...ins/tongue.gif https://www.yenko.net/ubbthreads/imag...lins/laugh.gif https://www.yenko.net/ubbthreads/imag...iggthumpup.gif

Re: 1968 CY Trans details
 

Jeff, I would like to see some pictures. I would like to compare to my other Nova's trans. Thanks Grady

Re: 1968 CY Trans details
 

I took the pix...Bruce is usually the guy that gets stuck with my inability to post pix. can anyone else help out if I email them?

Re: 1968 CY Trans details
 

If I can help if you need it

Ill pm my email

https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: 1968 CY Trans details
 

Jeffs Pix

http://i271.photobucket.com/albums/j...28/L-78001.jpg

http://i271.photobucket.com/albums/j...28/L-78002.jpg

http://i271.photobucket.com/albums/j...28/L-78003.jpg

http://i271.photobucket.com/albums/j...28/L-78007.jpg

http://i271.photobucket.com/albums/j...28/L-78008.jpg

http://i271.photobucket.com/albums/j...28/L-78009.jpg

http://i271.photobucket.com/albums/j...28/L-78010.jpg

http://i271.photobucket.com/albums/j...28/L-78011.jpg

http://i271.photobucket.com/albums/j...28/L-78012.jpg

http://i271.photobucket.com/albums/j...28/L-78013.jpg

http://i271.photobucket.com/albums/j...28/L-78015.jpg

http://i271.photobucket.com/albums/j...28/L-78016.jpg

http://i271.photobucket.com/albums/j...28/L-78017.jpg

http://i271.photobucket.com/albums/j...28/L-78019.jpg

https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: 1968 CY Trans details
 

Can someone post a close up picture of a 1970 CY trans paint stamp on the bellhousing? Thanks to Chad I have one photo but it is not clear enough to see what the writing is on either side of the CY. TIA
Rick

Re: 1968 CY Trans details
 

Carl,

thanks for posting the pix. sorry everything has a red hue, I didnt realize my red trailer would cause such a problem. I did find the vin numbers on the trans...they are so faint that it didnt show up on the pix but they do match.

thanks again for posting them

Re: 1968 CY Trans details
 

Great pix. Some of us 'anal types' love this kind of stuff!

https://www.yenko.net/ubbthreads/imag...lins/beers.gif https://www.yenko.net/ubbthreads/imag...ns/worship.gif

(Simple Green. https://www.yenko.net/ubbthreads/imag...iggthumpup.gif )

Re: 1968 CY Trans details
 

Jeff, Thanks for the pictures.

Grady

Re: 1968 CY Trans details
 

HY any one missing a C X trans cx 479 vin 19w49---5

Re: 1968 CY Trans details
 

[ QUOTE ]
HY any one missing a C X trans cx 479 vin 19w49---5

[/ QUOTE ]

How about --- Anyone want a CX trans https://www.yenko.net/ubbthreads/imag...ns/naughty.gif

Nuch

Re: 1968 CY Trans details
 

http://i271.photobucket.com/albums/j...28/L-78001.jpg


Thanks an amazing finish on a 40+ year old ID tag. What
are the particulars of that vehicle? In other words, was
the trans out of the car and stored inside for many years?
I found a CX trans that was removed in 1970 and stored in
a garage, but the ID tag still looks 40 years old.

What's the secret?

Nuch

Re: 1968 CY Trans details
 

[ QUOTE ]

http://i271.photobucket.com/albums/j...28/L-78001.jpg




Thanks an amazing finish on a 40+ year old ID tag. What
are the particulars of that vehicle? In other words, was
the trans out of the car and stored inside for many years?
I found a CX trans that was removed in 1970 and stored in
a garage, but the ID tag still looks 40 years old.

What's the secret?

here is the link of the car in question.https://www.yenko.net/ubbthreads/show...e/0#Post339830

the only secret is that the car is a lo-mile Ca. car. I believe it spent a major portion of it's life stored indoors...at least from the 80's, probably longer. I hope this helps? I messed up the tag by putting steam on the case and accidentally hit the tag and peeled a little paint of the bottom...DOH!

Nuch

[/ QUOTE ]

Re: 1968 CY Trans details
 

After seeing the car in the thread you linked, https://www.yenko.net/ubbthreads/imag...emlins/eek.gif https://www.yenko.net/ubbthreads/imag...lins/drool.gif <--- NICE CAR!

Your CX sequence is #426. Wonder who got #427 https://www.yenko.net/ubbthreads/imag...ns/naughty.gif

Great find.

By the way Jeff, don't beat yourself up over the power washing of the tag incident. We all have one of those
boo-boo's to deal with somewhere........ https://www.yenko.net/ubbthreads/imag...lins/blush.gif

Steve

Re: 1968 CY Trans details
 

I was told the 426 was a Julian date started Jan 1 of 68 so 426 was the end of Feb '69. I guess a bunch of guys possibly have CX tranny's with 427 build dates...very cool.

Re: 1968 CY Trans details
 

Jeff,

Here is my CX ID tag. Odd that yours is one below 427 and
mine is one below 396........ https://www.yenko.net/ubbthreads/imag...mlins/grin.gif

Steve

http://i244.photobucket.com/albums/g...6/MVC-005F.jpg

Re: CY & CX 400THM: differences & similarities
 

[ QUOTE ]
For the year 1970:
*TH400 CY Trans. was coded for the LS6 Chevelle,& Corvette LS5.
Higher-shift point and stronger bands & springs.I believe a thicker shaft as well?
*TH400 CW Trans. was coded for the L78 Chevelle-Nova-Camaro,& LT-1 Camaro-Nova.
*TH400 CR & CS Trans. was coded for the LS5 Chevelle-Monte Carlo,& Corvette w/Transitorizied Ignition.
*TH400 CF Trans. was coded for the L34 Chevelle-Camaro-Nova.
*TH400 CK Trans. was coded for the 300HP 350cid Corvette.

[/ QUOTE ]

Would a 69 Chevelle SS L-78 be a CX code like the Camaro?

Re: CY & CX 400THM: differences & similarities
 

Yes,as they too had a higher shift point.

Re: CY & CX 400THM: differences & similarities
 

Thank you.

Re: 1968 CY Trans details
 

What would this tranny be from...

tag CA 66 20597 with 286 stamped above that line.

Re: 1968 CY Trans details
 

Any 1966 Impala-Belair-Biscayne-Caprice with a 396/325HP & TH400,assembled after October 13th,1965.

Re: 1968 CY Trans details
 

Couple questions>

1. What trans codes are correct for '69 COPOs with automatics? Are they different for different models i.e. Camaro and Nova?

2. In '69 are the CX and CY codes used on all solid lifter motors (with automatic trans)?

3. Do all TH400s in '69 have partial VINS stamped on them?

Thanks!

Re: 1968 CY Trans details
 

69 L-78 nova CX trans

Re: 1968 CY Trans details
 

vin stamped on passenger side frt flange 4 times

Re: 1968 CY Trans details
 

69 CX yellow tag

Re: 1968 CY Trans details
 

Can anyone tell me what the application for a TH400 with a 71-CA on the tag is?

Thanks

Re: 1968 CY Trans details
 

For the Smallblock 400/255HP engine w/4bolt mains,denoted CLK when installed in any of the 1971 Impala series.

Re: 1968 CY Trans details
 

Thanks Mr70!

Re: 1968 CY Trans details
 

Looking for Thomas.. New to this site I have a 69 CX trans with the original converter. May be interested in selling it. Bob 708-687-5861 or [email protected]

Re: 1968 CY Trans details
 

What trans ID tag would a 68 Gibb Nova have? CX or CY?

Re: 1968 CY Trans details
 

CX

Re: "CY" and "CX" Question?
 

Just a couple of questions that have come up.
Would anyone have any info as to why GM put "CY" trans in the Impala's and Chevelle's
And the "CX" trans in the Camaro's and Nova's?
According to the chart on the first page of this thread the diff. between "CY" and "CX" are the case, and the "CX" case is the same as the Std case,and the valvebody.
Am I correct in assuming the valvebody to be different because of the weight of the Impala,and Chevelle being more than the Camaro's and Nova's
One more thing, did the Corvette's use the "CY"s also?
Thanks,Joe.

Re: "CY" and "CX" Question?
 

"Would anyone have any info as to why GM put "CY" trans in the Impala's and Chevelle's
And the "CX" trans in the Camaro's and Nova's?"

For 1969,is that a correct statement?..wasn't the CX early for all those Spcl.Hi-Perf equipped cars,later superceded by the CY for all those Spcl. Hi-Perf equipped cars?

I think there was a valvebody difference,but I'm not sure if that was it.
Thought the 427/430HP & 435Hp Corvettes did come with the CY,as of April 69.

Re: "CY" and "CX" Question?
 

Sorry, Yes this would be for '69.This what I am trying to find out,was there a change mid- prodution or were they both used all the way through from start of 1968.If there was a change,do you know what date this happened,Thanks.Joe.