C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Jun 26, 2018 | 02:10 AM
  #21  
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carriljc
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My 68 convertible has 4 under-dash cowl bars. Built in April 68.

Originally Posted by LT-1 kid
where would you find that weld yourself BB spreader bar at, I have a 68 BB vert and would like to install a spreader bar
the 68s verts did not have any under dash cowl bars, that started in mid 69
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Old Jun 26, 2018 | 04:35 PM
  #22  
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Originally Posted by 73ls1
Will a spreader bar help prevent cowl shake in my 73 convertible ? When I run over a manhole cover or hit a bad bump the car shakes. I have the Van Steel coilover system with Ridetech shocks.The shocks are set on soft settings. I don't want to spend $20,000 on a modern stiffer frame. Any ideas? Thanks Charlie.
You have had a lot of suggestions about adding a spreader bar. It may not cure all of the shakes and rattles, but it does stiffen the side-to-side cornering of the car. Like a number of other posters, I made one from heim joints I purchased and from some threaded rod and scrap steel. It cost less than $30. If you have removed the stock belt-driven fan, there will be plenty of room to install it.
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