Front Coil Spring Removal Question

As a newbie enthusiast I did lean on my friend who is a mechanic to remove and press in the new shells on my control arms. I was able to remove and reinstall the spring without a compressor but I had the luxury of a big 3-ton floor jack and I let the jack down so slowly that you could barely see it dropping. I paid specific attention to the pocket in the frame and the lower control arm and using similar patience the springs went in very easily.
I'm going to purchase a spring compressor just to add to my tools.
When I called my local Goodyear Tire/Repair store, I found out that I saved myself $650+ in labor by doing this myself. I do this to put some perspective on the educational process and to track this versus the cost of my project.
Bottom line: go for it. If I can replace my front end which included the removal and re-installation of the coil springs.....then you can certainly do it. BE CAREFUL!!!!
I chickened out and paid the $410 to have mine done. Then they put one in backasswards...... So I then paid a different shop another $110 to remove it, turn it right side UP, and reinstall. Watching the second shop do it, I started kicking my ownself for not attempting it. Looked pretty straight forward by the write-ups on this thread. Next time I'll do it my ownself and save the $$$.
The tear down was by far the hardest part. I had to work through decades of filth. Went through half a box of latex gloves. A compressor and air tools helped me power through that a great deal.
The digital camera came in handy, which sounds like the first shop should have used. I feel lucky that I have this forum, and it's great members, and a local shop with someone with specific Corvette experience.
Cheers.
My shop manual says to raise vehicle on hoist, then remove the shock (easy), then when it gets to the spring part, it says:
"With the vehicle supported so that the control arms hang free, place Tool J-23028 into position cradling the inner bushings. Tool J-23028 should be secured to a suitable jack."
What exactly is a "Tool J-23028"?

I am planning on cutting my coils 3/4 round to get a 1.5"- 2" drop.
Any advice or shared experience would be greatly appreciated. Thanks!
Pepe
After tightening the nuts to hold the spring you can disconnect at the frame or ball joint and then unscrew the nut at the top to lower the spring...reverse the procedure after installing the new spring. The top nut will pull, compress, the spring back to same point...SAFELY...just make sure, before the spring starts compressing, that it is seated properly in the lower and upper a-arms.

Stupid question.....but consider that I'm asking it... ;-)






