'69 Turbo 400 code?

[Mr70]

I must say this topic is getting very interesting for me.It all started on one mans outside inquiry.
Also to sum up:
The CY was definately used in 1970 LS-6 Chevelles,and up to 1974.
The CW was used on my L-78 1970 Chevelle,up to 1972.

CY first,then the CX later.
Rays documents look convincing for me to believe the CY trans was used in the 1968 Gibb Novas.The CY trans.was the one mentioned in the 7/12/68 letter.Not the CX as I thought.

The CX trans. wasn't out till 10/25/68.And COULD be specific for 427 COPO cars with 4:10 rears only?We need to look at serial #'s at the reunion for this,which I hope to attend.

A December built 1969 L-72 Impala used the CY trans.and not the CX.

The 1969 Special Hi-perf Corvettes used the CY code trans.,and not the CX.

I have never seen the CX trans.used in the 1970 model year.So it may be safe to say it was only used in the 1969 models.
Rick




[Edited by mr70 (08-19-2001 at 12:31 PM).]