I'm in the process of replacing my leaf springs. My springs support weight just fine. My ride quality is just fine too. Since replacing the SIX with a 350 I have severe axle wrap. I have 5 leaf springs. I'm going to install the heavy duty 4 leaf springs.

I've removed one spring. The free arch measurement of this spring is 7". The stack height of the leafs is 1.625". My question is: does anyone have the free arch and stack height measurements of the HD 4 leaf spring?

BTW, the free arch is measured between the center of the spring eyes down to the top leaf at the center pin.
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68 Sprint, 3-speed (at least it was)
Powered by Chevrolet now with an AutoGear 4-speed