 Re: General muffler/exhaust question... | Joined: Jul 2011 Posts: 969 Likes: 1 old hand |  old hand Joined: Jul 2011 Posts: 969 Likes: 1 | I had this work similarly done to my 99 ranger 2.75 exhaust all the way with dual flowmasters and no cats. Only cost me 250 only problem they used aluminum piping for fence posts so it had a nasty tin or metal ping like sound while rumbling/farting. But that's the difference between a V6 and V8. Good price at 350 for a job like that as long as it's done to your liking. If anything trial and error. Sometime next week I'll be cutting my muffler off and putting in a straight pipe. But I gotta keep the cats this time, smog laws are stupid and make for bad performance in any vehicle. Anyways, I like it loud! 
Gone vannin' I'll call you later.
| | | Re: General muffler/exhaust question... | Joined: Aug 2005 Posts: 21,211 Likes: 25 Supreme Master | | Supreme Master Joined: Aug 2005 Posts: 21,211 Likes: 25 | Yea, I want to change the exhaust. Some dude cut the Y pipe off and put in 3" pipes and Flowmasters without running to the back.
Anyone know the diameters of the original Y pipe on a '77 B200 318 engine, 109" w.b.?
I was thinking about running 2 1/4" with some cheap turbo mufflers and have them exit at the back sides. Gas tank might be in the way, though.... 2-1/2" stock Y-Pipe. Walker still makes them. We had to use a Y-Pipe on my buddy's early Dodge Xplorer tandem. The dropped floor on the passenger side prohibited the use of dual exhaust.
Nate Breece
| | | Re: General muffler/exhaust question... | Joined: Aug 2001 Posts: 12,107 Likes: 37 Maniac | | Maniac Joined: Aug 2001 Posts: 12,107 Likes: 37 | I agree with Nate. Walker part number 40540. HERE'S a bunch on eBay, all for under $120.
Windows- they're what make a van worth owning!
| | | Re: General muffler/exhaust question... | Joined: Mar 2014 Posts: 358 Likes: 3 enthusiast | | enthusiast Joined: Mar 2014 Posts: 358 Likes: 3 | you do not want to keep any "Backpressure", that does nothing for the engine, A proper exhaust will help pull the incoming air/fuel into the chamber while both valves are overlapped. scavenging it what you want, not backpressure.
2004 Ford E250 5.4 4r75w dana 60 with 3.73;'s (Current)
1992 Dodge B350 360/46rh non lockup /9.25 rear with 3.90 cogs (sold)
1986 GMC Vandura 2500 305/TH350/3.08 rear (Sold)
1994 G20 Ex Virginia DOT crew van 305/4l60/3.42 G80 10 bolt (Sold)
1969 Chevy G20 Sport van 230,3 on the tree, 12 bolt with 4.11 cogs.(Sold)
2004 Chevy Express 2500 4.8,4l80E,3.73 (sold)
1990 ford e250 club wagon 460.E4OD,dana 60 rear 4.11's (sold)
| | | Re: General muffler/exhaust question... | Joined: Mar 2016 Posts: 339 enthusiast | | enthusiast Joined: Mar 2016 Posts: 339 | you do not want to keep any "Backpressure", that does nothing for the engine, A proper exhaust will help pull the incoming air/fuel into the chamber while both valves are overlapped. scavenging it what you want, not backpressure.
In-correct.Some-not much back pressure is beneficial.Restriction,often confused with back-pressure is not good.
Tucson-it's a dry heat...like an oven
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