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· Moderator and Scrounger Extraordinaire
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
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19,755 Posts
Definitely an exhaust leak. Id check the collector connections. Sounds like more than a single cylinder leaking.
 

· Moderator and Scrounger Extraordinaire
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
19,755 Posts
Thats definitely the culprit. Swap that dual clamp monstrosity out for a stainless band clamp. If both pipes are the exact same diameter, use a butt joint style. If one pipe is slightly larger than the other, use a lap style clamp.
 
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