wpbailey

Is there anything in the parts books about what the dimensional differences are. I would like to know if the screw in the C3 is longer than the C2 jack. I know the base is larger which is why the spring needs to be longer. I [/I][U]think[I][U] the screw is also longer than the C2. If that is true - the C3 is about a 1/2 inch too long to fit in the C2 well. Can you verify that based on the information that you have?

One other thing - Did the part number change of the C3 run? I am wondering if some C3 jacks were different sizes meaning that maybe some would fit a C2 and others may not?

wpbailey

Thank you - I am getting closer to the answer. You don't know how the screw length compares between the C2 and C3 do you?

I think that is the critical dimension that will determine if the C3 will mount in the C2 jack holder is the screw length. The C2 jack pretty much fills the space in the well from side to side. A C3 screw that is longer than the C2 will force the screw to hang over both sides of the well and it will not fall down far enough to make contact with the jack mounting point. With the jack not going all the way down in the well, the cover for the well will not lay flat either. Any help with the screw length would be helpful.

gbvette62

The Parts Books don't give any dimensions for jacks.

As I said in my earlier post, my 81 jack is about 15" wide fully collapsed. I don't have access to a mid-year jack right now, but I would think someone on here would be willing to measure their mid-year jack for you.

On 68-82's the battery is in the compartment behind the driver's seat, and the jack's behind the passenger seat. To fit in the compartment, the jack is placed at an angle.

The jack and part number changed in 1980, but I'm pretty sure the jack itself wasn't all that much different, than the one that had been used since 1969.

wpbailey

Thanks for the information. The C3 jack that I am looking at is 15 5/8" long. That makes this specific early C3 jack too wide to fit in the C2 well. It is about a half inch too long. My conclusion is that C3 jacks must have come with at least two different screw lengths (widths). The shorter one fits and the longer one doesn't. The one that I am looking at is an early C3 jack and it is too long to fit in the C2. That solves the mystery for now. Unfortunately, I do not have the specific part number for the C3 jack that has the longer screw (width).

Maybe this thread will help out others looking for C2 jacks.

Thanks everyone for your help with this.

phil2302

My experience has been that some of the early c3 jacks were a bit too long to properly fit in the c2 storage well. It was the lenghth not the width that was the issue.