I still have the springs in car from 350 about 10 yrs. old. On highways with dips I'm pancaking (bouncing up & down)I have to slow down or lose control. I've changed the shocks and still having this problem. What Is the weight difference between the 400 and the 350? Someone mention to me about 400 springs,where can I purchase them? And will this solve my problem? ------------------------------------------------------------------------------------ Mike68 LARK 350 TO 400 WHAT SPRINGS?
This is not posted in the right place. For an answer to your question, this needs to be posted in "The Whoa and The Sway" forum, for suspension discussion. Someone can probably help you out from there.
