Thread: 47-55.1 exhaust drone?
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Old 09-01-2023, 11:10 PM   #6
mr48chev
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Join Date: Jul 2007
Location: Toppenish, WA
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Re: exhaust drone?

I drove my 48 for over 100K with the tailpipe exiting in front of the rear tire with a pretty well blown out glasspack to look like I had a muffler. That was with 2 inch exhaust and yes it had a terrible drone. So did my 71 GMC with a 350 and glass packs and the pipe(s) exiting in front of the tires. It helps a bunch to get the exhaust to exit behind the rear wheel either angled out towards the corner or straight out the back. Since most likely you will never have a camper shell on it with people riding in the back straight out the back works fine. A good exhaut guy will cuss you a bit but usually can get around the Trailing arms.

The 3 inch might be a challenge but you could split that behind the muffler and run dual 2 inch pipes on out the back
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48 Chev 3100 that will run a 292 Six.
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