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Mod | | | Forums66 Topics128,070 Posts1,055,892 Members48,428 | | 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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| | | | Joined: Apr 2008 Posts: 502 Shop Shark | | Shop Shark Joined: Apr 2008 Posts: 502 | Hey all,
I am helping a friend with his 216.
On the 2 that I have re-habbed they are very very quiet when running, you barely hear any exhaust noise.
FYI My 2 216's are a 49 engine and a 52 engine.
Both have the doughnut style exhaust seal.
The exhaust on my friend's truck has a flat flange that you use a flat gasket on.
His is noticeably louder- he has a modern muffler and new exhaust, both of mine are original from 1949, rust and all.
Why is his louder- the flat gasket type seal vs the doughnut? | | | | | Joined: Apr 2008 Posts: 502 Shop Shark | | Shop Shark Joined: Apr 2008 Posts: 502 | Oh yeah, we have adjusted his valves at all gaps within the tolerance and not noticeable change in sound unless you take them way out of spec. | | | | | Joined: Jun 2008 Posts: 1,388 Shop Shark | | Shop Shark Joined: Jun 2008 Posts: 1,388 | I have found that the timing of the truck can make a huge difference in sound, so can the idle mixture. | | | | | Joined: Mar 2005 Posts: 684 Shop Shark | | Shop Shark Joined: Mar 2005 Posts: 684 | I'm thinking the differnce is probably in the mufflers. | | | | | Joined: Nov 2008 Posts: 544 Shop Shark | | Shop Shark Joined: Nov 2008 Posts: 544 | what would be the best muffler replacement option for a truck to keep it close to stock. | | | | | Joined: Apr 2008 Posts: 502 Shop Shark | | Shop Shark Joined: Apr 2008 Posts: 502 | We did a valve adjustment yesterday morning, BIG Difference, but still a difference in sound- I am wondering if the newer muffler is giving the engine more back pressure than the older stock muffler? I though about hooking up an old stock exhaust to his and seeing how different it would sound. | | |
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