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| | | Forums66 Topics128,105 Posts1,056,208 Members48,436 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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with Ads!  Again, thanks!
| | | | Joined: Sep 2006 Posts: 38 Apprentice | | Apprentice Joined: Sep 2006 Posts: 38 | Is it necessary when running a dual exhaust to connect the exhaust pipes with an H pipe or an X pipe for back pressure?
What happens if You don't? | | |
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