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Mod | | | Forums66 Topics128,049 Posts1,055,680 Members48,426 | | 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: Feb 2007 Posts: 9 New Guy | | New Guy Joined: Feb 2007 Posts: 9 | Hi I replaced the muffler on my 68 k-20 292 engine with a Walker 21169 heavy duty muffler it has a whistling sound under acceleration any ideas of what the problem is? | | | | | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | Drive it around until a black stain shows up then you'll know where your leak is,
Scott | | | | | Joined: Sep 2010 Posts: 166 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 166 | Are you sure its not on backwards? | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | What size pipe is it? 292,s need a minimum restriction exhaust system. Some of these mufflers are restictive to make them quite. Or like Durwood says maybe its on backwards.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Feb 2007 Posts: 9 New Guy | | New Guy Joined: Feb 2007 Posts: 9 | the pipe size is 2 inch the muffler is marked inlet it is heavy duty replacement for the stock muffler walker 21331. | | | | | Joined: Jan 2003 Posts: 354 'Bolter | | 'Bolter Joined: Jan 2003 Posts: 354 | Are you sure you don't have a vacuum leak?
Harold Wilson
41 Chevy 3/4 Ton
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