Can 3851100 (c2 spring) be used in a 1977 car?

[Chuck B.]

My wife’s 77 has the FE7 heavy duty suspension. She doesn’t like the ride. I’m trying to soften it up for her. I have a leftover set of c2 springs (and shocks) from working on my 67. Do you think I can put the 3851100 springs in her car?
also, I have a 3/4” sway bar to replace the 1-1/8” original. What ride or handling difference do you think that would make?
I Haven’t found a rear spring replacement yet.
Thanks in advance.

Forgot to add:
Her car has PS, PB. She has A/C but I removed the compressor because it’s broken. Probably won’t restore it.

[Patrick B.]

Re: Can 3851100 (c2 spring) be used in a 1977 car?

I am sure they would fit, but a 77 Corvette is heavier than a 65. The springs would cause the front to sit lower possibly causing tire to fender clearance issues. You really need to replace the HD rear spring with the 1977 standard rear spring. It is closer to the passenger seat and probably more to blame for the bad ride comfort. Replacing just the rear spring would change the handling toward more under steer which may not be too noticeable in gentle driving. Changing just the front springs would increase oversteer at the limit possibly making the car less stable ( somewhat mitigated by the large front stabilizer bar). It is best to change both front and rear springs to gain good ride quality.