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#1 |
Registered User
Join Date: Dec 2006
Location: My buisness
Posts: 9
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performance exhaust help
Hi all. Long time member, first time poster. I'm looking for opinions on quiet performance exhaust and mufflers. I don't mind the truck getting throaty when I pour the coal to her I just don't want my neighbors windows rattling at 5 am. I have a fresh 350 with thorley headers I'm about to install in my 72 4x4 and I'm hoping for the best of both worlds. Not to loud and good performance. Any suggestions? Thank you in advance!
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#2 | |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: performance exhaust help
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#3 |
Registered User
Join Date: Dec 2006
Location: My buisness
Posts: 9
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Re: performance exhaust help
Thank you, you're the second person to mention magnaflow.
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#4 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: performance exhaust help
Dynomax Hemi Turbo mufflers. 2 1/2" in and out in a 20" case. I have them on the Jimmy and they sound great when you're getting on it, and have a near stock sound level at idle. No drone, a great performance muffler. And even better, they are relatively inexpensive.
I'd put them on my Camaro as well if they weren't so darn long!
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#5 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,522
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Re: performance exhaust help
Personally I like to run a single. You could go the dual 2.5s into a flowmaster Y then into a 3'' Magna Flow then out the back 3''
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#6 |
Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,445
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Re: performance exhaust help
I just put some Sumitt brand turbos on my truck I did have a Dyno max on it that lasted about a 1 1/5 yrs. The sumitt brand is the same as a Dynomax a little cheaper also.Have been told the street strip is the same as Flowmasters 40.
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
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#7 |
Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,445
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Re: performance exhaust help
I just put some Sumitt brand turbos on my truck I did have a Dyno max on it that lasted about a 1 1/5 yrs. The sumitt brand is the same as a Dynomax a little cheaper also.Have been told the street strip is the same as Flowmasters 40. I put this on my 01 Silverado has a nice idle tone and throaty at wot
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
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#8 |
Registered User
Join Date: Sep 2006
Location: Riverton KS
Posts: 832
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Re: performance exhaust help
I put Flowmaster 70 series mufflers on mine (Dual 2.5" dumped before the axle) And I LOVE them. Even with a fairly big cam, they sound mellow at idle and are nice and quite at all different cruising speeds. Never any drone. They are big mufflers, which makes them a tight fit, but worth the effort in my opinion.
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1970 SWB Build |
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#9 |
Registered User
Join Date: Jan 2015
Location: Phoenix
Posts: 29
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Re: performance exhaust help
Installed a 2-1/2" system from the Doug Thorley Tri-Y headers back several years ago on my elephant, that was a mistake, raised the torque range higher than I wanted. I wish I could find the link that stated 2-1/4" is more than enough for a small block chevy and anything more you lose the scavenging effect of the exhaust to work properly. A 2-1/4" pipe will flow 600cfm even with a very large carburetor you would never exceed the capacity of two 2-1/4" pipes...
http://www.exhaustvideos.com/faq/how...pipe-diameter/ Last edited by C20ELEPHANT; 01-10-2015 at 12:14 PM. |
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#10 | |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: performance exhaust help
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#11 | |
Registered User
Join Date: Oct 2014
Location: brentwood, ca.
Posts: 109
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Re: performance exhaust help
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1967 Chevy C10 Stepside SWB - 350/700r4 |
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#12 |
Senior Member
![]() Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,365
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Re: performance exhaust help
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A husband can be right...or...A husband can be happy. ![]() 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. ![]() 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc ![]() ![]() JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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#13 | |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: performance exhaust help
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