Unless there is a severe "Clunking" noise when you put it in gear, I believe it is pretty normal for an Automatic to "Squat" a little bit in the rear when putting it into gear. You'll probably notice it more on a cool morning while the choke is setting, and you have a faster idle.
Blues, I think, an 82 squats more then any other year. Mainly, due to the fact that they tend to idle faster then carburetored cars. I have an 82 in the shop, that if it is not warmed up, it will almost give ya whiplash. It's still pretty stout even after it's warm.......Sorry guys.....I like the carburetor on C-3's...........Steve
I have to say, that is one of my favorite things about my automatic 'Vette...it reminds me of a tiger crouched and ready to spring forward at your command! I especially like the effect on cold mornings.
* the squat is caused by the transfer of energy from the engine and tranny to the differential, continuing to the half-shafts and wheels held by your brakes, causing the vette to flex upon its springs due to the torque delivered.
People who have seen me put the 78 in gear and witnessed the squat usually raise their eyebrows in interest. It gives the appearance of power waiting to be unleashed. Last year I let a deputy drive my car and when the car squatted for him, his eyes turned into saucers accompanying a huge grin!
He bought a 79 within 3 weeks.
I agree with Bud, any clunking sounds are not good. Listen also for squeaks (u-joints) as you first begin to roll away. If you fix the squeaks before they progress, you shouldn't have to worry about clunks.
I don't know, mine doesn't really squat much at all. I have the optional FE7 suspension which might explain it especially if you have the glass mono rear leaf spring which might cause more squat on take off.