[meangreeny]

Just a comment on a recent vibration issue a cobra colleague and I solved with unknown vibrations we had in our cars (noticable between 1800 and 2200 RPM). FYI - Our vibrations were more noticable when our cars were moving (i.e. a vibration in 5th gear at 2000 RPM was more noticable than than in 1st or just bringing up the revs at stand still).

We both have 351w engines, B&B Cobras and side pipes hard mounted to the car (i.e. bolts).

When we unbolted the pipes from our cars all vibrations went away. Our vibrations were from the pipes hard mounted to the cars. Our solution was to engineer a rubber washer mounting system where the pipes are mounted to the car. This solved most of the problem (90%) but my next step is to go to a custom muffler shop and engineer a mounting system that supports the pipes and allows for free movement at the same time.