wils5150
Mass
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Joined: 07/31/2007
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I need to replace the exhaust on my 87 Allegro with a p-30 chassis 137 inch wheel base. I need to replace from the mufflers back. oe replacement is way to much for me right now. I am wondering if anybody has used after market mufflers and tail pipes. where did ya get them and approx. cost. Thanks in advance
Wils
87 Allegro 24 ft. 454.
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wils5150
Mass
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sorry its a 454
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swp5767
Royal Palm Beach, FL
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Joined: 04/07/2007
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Doug Thorley headers are popular with older motorhomes. The jet coated are better to help reduce heat. They can be a little costly. As far as muffler, I would go with something free flowing.
With your 3 speed tranny, you will run hotter than MH with a 4 speed.
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bill h
el segundo
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Joined: 08/02/2001
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You can save by having a 90 degree pipe to each side right after the muffler.
Search this site for "muffler" for some good posts.
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Bill and Susan
84 Barth 30 tag powered by ht502/Thorley, Gear Vendors OD
Siamese Calvin and Airedale Hobbes
4WD Toyota toad
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itsalleasy
USA
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Joined: 07/20/2007
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swp5767 wrote:With your 3 speed tranny, you will run hotter than MH with a 4 speed.
Why would an engine run hotter with a 3 speed trans than a 4 speed trans?
Check the local muffler shops for a price.
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wils5150
Mass
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Bill that would make it exit before the rear wheels correct? whats a good muffler
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tom_kat
way upstate new york/lake george area
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jegs or summit raceing has headers and hd mufflers for MHs the big round ones that are free flowing i have a set ,and pipes you can order,my pipes are bent to come out in front of the rear duels,a muffler shop can make something special for you,at jegs the special high flow MH mufflers are $80 to $85 apiece depending on pipe size and muffler lenght there really good long lasting mufflers have a nice sound to them but there not a real quite muffler.
1985 Class A Holiday Rambler Imperial 33 +1979 Class C Holiday Rambler Statesman 1000 = 24 ft
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jolooote
Miami, FL
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Joined: 01/29/2002
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I had the P30, 454 Chevy years ago. When I replaced, I went to Dual exhaust and brought em out on each side in front of the rear wheels. Really helped the power & hill climbing.
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bill h
el segundo
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wils5150 wrote:Bill that would make it exit before the rear wheels correct?
Yup. Works good.
Quote: whats a good muffler
My preference is a turbo or straight-through muffler, but some other posters have done really good comparisons, so do a search. Turbos can be a little loud, but an H pipe is a quick and cheap way to gain a little torque and quieten it some.
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artr1955
Connecticut
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Joined: 05/21/2006
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I have hedman headers and dual free flow exhaust on my 90. The exhaust exits just in front of rear wheels.
Artr1955
Gwen wife of 31 years Art 15 year old son
1990 31 ft Allegro
2005 Jeep Liberty
two 73 r/75 BMW motorcycles
2002 Kawasaki Voyager
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