1972 Chevy 4wd Longhorn Project: Never Ending Changes

[jbclassix]

Originally Posted by ryanroo

They are called zero rate add-a-leaf. they can recenter the axle or not. they are called add a leaves because they become a part of the springpack when you bolt them on with the center pin but do nothing to change the springrate like a normal add-a-leaf. the 2 hole three hole is the choices for moving the axle forward or back
Ryan

Ok. Hence the countersunk holes. His just have multiple positions, right?
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