CY & CX 400THM: differences & similarities

[Chevy454]

From some conversations I had with S/SS racer Russ Abrams, who is a Hydra-Matic employee...

[ QUOTE ]
If you have a real CX/CY converter, then look at the OD of the rear section of the converter. It should have letters such as "C" or "D". That indicates a "loose" pump. The trucks have no letters or "A". Six lug converters were used for high rpm or high torque applications. There was a special VB and governor for the CX/CY models, that information disappeared, when GM went to computers to store info. The 400 was out of production ,so the info was canned. Russ

[/ QUOTE ]

[nuch_ss396]

[ QUOTE ]
From some conversations I had with S/SS racer Russ Abrams, who is a Hydra-Matic employee...

[ QUOTE ]
If you have a real CX/CY converter, then look at the OD of the rear section of the converter. It should have letters such as "C" or "D". That indicates a "loose" pump. The trucks have no letters or "A". Six lug converters were used for high rpm or high torque applications. There was a special VB and governor for the CX/CY models, that information disappeared, when GM went to computers to store info. The 400 was out of production ,so the info was canned. Russ

[/ QUOTE ]

[/ QUOTE ]

Rob,

Any chance you or the gentleman you quoted have an image
of the "letters"? Were they ink stamped or punched in.

Does anyone here have an original SHP 6-lug converter that
they can check for these "letters"? I'd like to know more
about this since this is the first I'vw heard of it.

These are the kinds of details you just can't get anywhere
else.

Steve

[KevinCav]

I have one of those 6-lug converters for a CY trans that I have. The letter "c" is stamped on the converter in a very small font and is located approx. 4.5 in. from the centerline of the shaft hole. I'll try to post a picture of this in the next week or so.

[Chevy454]

DOH! Sorry nuch...just now saw the above post...unfortunately, I don't have an original CX converter...like a MORON I let one go with an L78 Chevelle I sold a few years back...sounds like I need to run over the Ray's house and get a picture of the original converter out of his '68 COPO...

[nuch_ss396]

Great !

I'll be waiting to see the picture(s) of the stamping.

Steve

[KevinCav]

Sorry it took so long, but here are some pictures of the stamping on the 6-lug converter out of my orignal CY transmission.

[WILMASBOYL78]

Attachment won't open for me..??

wilma

[KevinCav]

HELP! I want to post these pic's of the stamping on the converter, but I'm having trouble. Can someone please tell me the correct way to post them? Thanks.

[nuch_ss396]

Kevin,

I sent you a PM.

Steve

[nuch_ss396]

Here are some pictures of Kevin's CY converter.

Steve