I'm a little late to the conversation. I installed the 3400# 456/457 springs on my 63 Sport Fury with the stock hangars and mounts. I saw a reference somewhere that 3400 was my cars weight. However my ride height with the new springs was @ 1" lower than it was with the old worn out stock springs with broken leafs. The ride on the street/highway is fine but it
will not hook up at the local dragstrip running 255/15 street tires. I've seen similar problems with other big block cars running street tires at this track. And have heard complaints from other racers. So I no longer take it to the strip.
Paul L.
On Saturday, January 17, 2015 at 4:09:51 PM UTC-6, Iwasa4dr wrote:
Okay I have been looking around the web for numbers as to which super stock springs I should use on my 63 Savoy conversion.Some say the a body 002 and 003 ss stock springs and others say the 456 and 457 with longer hangers.What is everybody running on this site.Thank you for your time.Jeff