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Old October 25th, 2021, 09:26 AM
Prowbar Prowbar is offline
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Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
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Default Re: Stock exhaust end pipe

Quote:
Originally Posted by Jethro View Post
Back in the mid to late 80's I worked at a Midas muffler shop. We installed both stock and custom bent exhaust systems. When building pickup truck exhaust systems we recommended dumping the tailpipe out the side instead of the rear due to the air swirl in the bed.
When the tailpipes go straight out the back exhaust fumes will be drawn up into the bed and swirl around the back of the cab. More than one dog has died of carbon monoxide poisoning while riding in the bed of a pickup. If the truck has a sliding rear window the fumes will even come inside the cab.
I believe Funky's tailpipe is routed straight out the back due to interference with the utility bed.
No proof, just experience and what I was told.
Makes sense. If you drive a hatchback with the trunk open the same thing happens.

By the way, the end pipe I made for the GMC is in my build thread if you have not seen it.
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