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10-22-2014, 10:10 PM
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#1 |
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Registered User
Join Date: Nov 2008
Location: kannapolis, nc
Posts: 571
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7.4l exhaust
what was GM thinking when they designed this exhaust system. 2.750" duals back to a huge muffler, then 1 single 2.5" tailpipe. WTF? I guess some exhaust work is in my future. No o2 sensors past the cats so I may clean them out too
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2000 c3500 utility bed 7.4l 5sp manual old body style. Cab and chassis 1964 GMC K10 383cu in/sm465/twin stick np205 1965 Chevy C60 1990 Chevy Bus 8.2l fuel pincher 8800 miles 1993 Ford F350 crewcab 7.3idi nonturbo ZF5 Transmission Running on WMO |
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10-23-2014, 06:54 AM
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#2 |
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Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: 7.4l exhaust
It was an utterly weak attempt to control emissions and HP. Also note that if built right, the exhaust should work to create a scavenging vacuum effect on the cylinders of the engine. So as the exhaust cools down, the amount of space needed to evacuate that exhaust is not as large. GM kind of blew it.
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Frank |
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