<< Mr Adler has a factory bulletin on the proper way to
do this, it involves shortening some of the remaining leaves to preserve the
spring action.
>>
I wrote it up in May 1991 Pickups 'n Panels in print.The original info was in
Chev Service News 1940 page 79. On half tons it was OK to remove the 4th leaf
from the top on both front and rear springs. A spacer is inserted of the same
thickness. On heavier trucks, for seat of my pants engineering, I would
remove a short leaf, as shorter is stiffer. You could cut or grind the short
leaf into a spacer.
The 3/4 and heavier trucks had 2 stage springs. See the SPECIFICATIONS spring
pages. You could adjust a leaf so the lightweight spring rate gives more
deflection, while leaving the loaded spring rate alone. You get the best of
both worlds: les deflection empty, more deflection loaded.
bob ADler
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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