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I have a set of push rods on order(smith Brothers)and discussing my combo with him he recommend the .120 wall thickness for my combo the old rods were .083.Don't no what the wall thickness on the Harland Sharpe r shafts r though



The harland sharp shafts are definitely NOT the problem, they are very thick and rigid.
from here I cant go back and see what you are using for hold downs (will assume the harland sharp hold downs too) no problem with those either. and bolts or studs?

The old setup were indys.The ones r Harlands(which i have not installed yet).......Thax