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new balancer and valve seals, runs rough

525 views 1 reply 2 participants last post by  DoubleVision 
#1 ·
I have replaced the 8" balancer with a 6.75" and replaced the rubber valve seals and now my 350 runs really rough and feels like the truck is going to fall apart. Is this from the balancer or did I adjust the valves wrong? I also removed the carb while changing the valve seals but I doubt this had any effect.
 
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