On 12 Jan 2015, David Hanson" wrote:
"My car is YD3-2405. The engine was out of the car at one time and I purchased it complete, but not functioning, no hydraulics. I rebuilt the transmission at John Twist’s technical session at University Motors about 7 years ago. I kept all of the parts that were replaced. The one that I removed is shorter (2-27/64”) than the replacement (2-3/4”) I received from John. I don’t know if the one I removed due to a worn hole in it was original or a replacement also. I’ve attached both photos with measurements. It will be interesting to see if the long one works when I get it back together. Any questions or other measurements required, let me know and I’ll see if I can help out.

2.42"

2.75"

On 1/16/2015, Neil Burnside wrote:
"I have four twin cam boxes on the floor all with shorter rod as in photo".
On 1/25/2015, David Hanson wrote:
"I took measurements from the hole to the end of the rod and added the radius of the hole to come up with a length. Obviously the old part was not completely round, but close in diameter. You can see the wear on the old pin also. The old rod is 9/32” in diameter and the new one is 41/128” a strange size I thought".

See also Clutch Slave Pushrod Dimensions - CT-108