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05-17-2024, 04:48 PM | #1 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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General Muffler question
My question is about installing a dual inlet and dual outlet mufflers, Flowmaster 50 and 70o series big block in specific. On either side, can you use one of the connections as an inlet and use the other one as an outlet? Basically, I am asking if each side dual inlets (or outlets) have to be both inlet or outlet only? I hope I explained it!
I have on hold for over 30 minutes more than once at Holley's tech phone line!!
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1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
05-17-2024, 06:15 PM | #2 |
Paint, Body & Metalworker
Join Date: Jan 2008
Location: Airville, PA
Posts: 35
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Re: General Muffler question
It depends on the internals of the muffler. If they are just straight through one side to the other, with perforated tube it wont matter. Some have built in X pipes and depending on the X pipe design, might not flow the best if you don't run them dual in on one side and dual out the other side.
This Jegs muffler wouldn't flow the best if you ran it 1 in and 1 out on each side of the muffler. Pypes has a straight through design, common on the 70-81 Camaros. Where you can run 1 in and 1 out per side. So, it's really muffler dependent if you can or shouldn't |
05-17-2024, 06:56 PM | #3 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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Re: General Muffler question
Thanks.
It is kind of disappointing that the Flomaster ones (the 50 or 70 big block ones) don't have any specific descriptions on Holley's website. The customer service sucks too, keeping you on hold for such a long time. Also, I have been searching online to see if I can find any info but no luck. I like these mufflers because they are quieter than others.
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
05-17-2024, 09:20 PM | #4 | |
Paint, Body & Metalworker
Join Date: Jan 2008
Location: Airville, PA
Posts: 35
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Re: General Muffler question
Quote:
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05-18-2024, 09:29 AM | #5 |
Senior Member
Join Date: Dec 2009
Location: TN.
Posts: 8,227
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Re: General Muffler question
Here's a video that shows the mufflers Cutout.
The mufflers that you have are near the end of the video.
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