TH400

[RS69]

I've found a th400 trany and need help with some numbers. on the tag attached to the trany is the folowing: 255 stamped in the top right, then on the bottom is CQ-69-4143. Could someone plz help with these numbers. I'm trying to figure out what this trany is from. I'm told it was behind a 427 425hp motor. thanks

[Mr70]

CQ is for a 427/335HP engine,used in the Bigger Chevrolet Passenger cars for 1969.
CX was the 427/425HP engine appliction.
69 is the model year.
255 is the day of the year=roughly September 10th 1968.
4143 is that Transmissions own serial number.

[RS69]

Thanks alot for the info.

[YENKO DEUCE REGISTRY]

Rick,
What do you show for the CD code for a TH400?

[Mr70]

TH400 D Applications:
For 1967 & 68-327 engine,Passenger cars.
For 1969-350/250HP & 327/235HP,both passenger cars.
For 1970 & 71-400(402)/330 HP Chevelle & Monte Carlo.

[396L35]

Rick, What do you show for the CT code for a TH400? Thanks, Mark

[Mr70]

Mark
A 1966-68 CT TH400 code on the Passenger side tag is for series 10 & 20 Truck application.
In 1969-70 there was no CT suffix tag.The series 10 & 20 Truck became CJ.
Just to be clear,I am talking about the silk screened suffix tag on the Passenger side of the transmission.
If a Transmission shows CT on the Drivers side,with 5 non VIN# related digits after it,that is a SERVICE REPLACEMENT coded Trans.,& the same as a CE Coded Engine block was defined.

[396L35]

Thanks Rick

[YENKO DEUCE REGISTRY]

Thanks Rick;
The trans I have came from a '68 Impala with a 275hp 327cid, but without a VIN on the pan rail I never knew if it was originally from that '68 Imp that I pulled it from.