Bennie

That measurement you asked for is 2 3/8

I suspect you purchased shackles that were rebuilt with new rubber bushings. The new rubber bushings most likely will have to be trimmed.

Taked a look at this pic

Take them apart to see if this is the case



also Check out steps 9,10,11 here
http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0103.htm


Good luck

DADS50
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1950 chevy 3100