I purchased a 12 bolt out of a 72 el camino to use in my 66 chevelle. Before I bought it I asked on TC if it would fit ok. A couple of people that responded said I would need to use 67 springs. I needed new springs and got the 67 ones. The upper mounting arrangement appears to be different. Can I make these work or will I need to buy the 66 springs?
Thanks,
Charlie
66 chevelle in many parts

The 67 and later springs have a pigtail on top (like on the bottom) that won't work with the 66 frame spring pocket. You need a 66 or earlier spring that is full diameter at the top. Do you still have the original springs out of the 66 Chevelle? I would have used those.

Bruce,
The old springs are the original ones and need replacing. The ones I got were from someone that bought them and didn't use them so I don't have a lot of money in them.
Thanks,
Charlie

The difference in selecting springs is on the frame side only. All springs are pigtailed on the rear end side. So if you have a 66 frame, you need 66 springs regardless of the rear end you are using. Good luck

Steve,
Thanks for the response.
Have a great day,
Charlie