how big of job are they to replace with body on and motor in?

one side at a time. lower sub with a floor jack just enough to loosen them. Not too much though since your brake lines, etc are still connected.

ok thx

It's not too bad of a job. Make sure you spray your body mount bolts down real good with penetrating oil a couple of days before you break them loose. The longer the better if you ask me. Like what was said before, only do one side at a time so you don't lose the subframe alignment. I broke the bolts loose before I jacked the car up on one side. Rest the body on jack stands with a 2x6 in between the body & stand. If you're floor pans are rusted, I wouldn't try it. But if they're solid, it's no problem. Once the body is supported, use a floor jack to put some pressure on the subframe. Now you can remove the bolts. Slowly lower the jack until you have enough room to remove the bushings. Slide in the new bushings and raise the frame back against the body. Start your new body bolts and only snug them. After that, you can remove the jack stand(s) and lower it back on to its suspension. Torque the bolts down. Repeat for the other side. You can check your frame alignment through the center mounts. There is a gauge hole that will align with a hole on the body when correctly aligned. One thing to note: You may have problems with the cage nuts spinning trying to loosen the body bolts. Hopefully this won't happen but be prepared if they do. This will definitely create more work. Hope this helps!

Whatever you do, don't take them out with an impact. Although it can obviously be done, you increase the risk of spinning the cage nuts 10 fold. Spray the crap out of them for a couple of days with penetrating oil as suggested previously and take them out with a socket and ratchet.

ok guys thanks much for the info.im confident that i can do it.http://www.camaros.net/forums/images/icons/icon14.gif

Be extra careful on the driver's side, the steering shaft won't flex much.

ok thx much.im glad you brought that up.i didnt think about that.clayton

Remove the ground strap on the passenger side or you'll snap it. I was really surprised how easy of a job it was. Of course none of my cage nuts gave me a problem. The hardest part for me was removing the battery tray.

here are some pics that might help you, its possible depending on how rusted they are.
SubFrame Bushing Project (http://www.carsbyjim.com/storage/FrameBushings/)

click... thanks for pics. next project for me on my 1968 camaro. thanks again joev :)

thx jim for the pics.looks like it will be fun

Use good old PBB to spray her down with over at least three days!!

I used Liquid Wrench up until I heard about PBB here and I'm here ta say, it work's GREAT!!

pdq67