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04-03-2014, 10:07 PM | #1 |
Building Dreams out of Dimes!
Join Date: May 2005
Location: Bonham, Tx
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What muffler offset are you running? I plan on Spintechs. True duels with side exit.
Just wondering what muffler offset you guys are running or what offset you have found to work best with true duels . My exhaust tips will be in front of rear tires.
Thanks! I will be inrunning long tube headers with 2.5 exhaust, Spintech super prostreet 9000 true duels with rolled tip exiting in front of rear tires.
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1981 Chevy short/wide. SB400 350th |
04-03-2014, 10:33 PM | #2 |
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Location: hazard, ky
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
spintechs are good i like dynomaxes and magnaflows too. truck is going to be loud fyi with spintechs. i will say all kinds of bad things about flowmasters.
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04-03-2014, 10:35 PM | #3 |
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Location: slurrey, bc.
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
does everyone in texas run an extremely loud exhaust setup? seems like it lol..
you don't need offsets for those.. they're tiny boxes and will fit anywhere.
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-'73 c/10 - Low with Go - will be complete... probably never. -'90 2wd Blazer - well... soon enough anyways. -'84 SWB - the daily gas guzzler. |
04-04-2014, 12:10 AM | #4 |
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
true dual 2in straights, no mufflers or cats.
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77 c10 (went from a inline 6 to 350) (converted to 3 speed in the floor) 350: mild cam, holley 600cfm 4bbl, summit stage 1 intake, accel billet distributer, flowtech headers, 2 1/4" exhaust with glasspacks, powermaster 160a alternator. |
04-04-2014, 03:00 AM | #5 |
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Location: Tucson az
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
Cat and summit racing street and strip dual chamber
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04-04-2014, 04:15 AM | #6 | |
Building Dreams out of Dimes!
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Location: Bonham, Tx
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
Quote:
Rednecks with 4x4s always run glass packs and big megaphone tips here.
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1981 Chevy short/wide. SB400 350th |
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04-04-2014, 07:54 AM | #7 |
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Location: Blossvale NY
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
Full length headers, true duals with cherry bombs, 2.5" piping all the way back and dumps at a 45deg downward angle just behind the rear axle. Seems to run good, but I don't own a dyno so I can't make any power claims.
But it is pretty loud...snappy sounding above 2300 kind of like the General Lee..... The system was shorter when I bought the truck last month. It ended just behind the back of the cab maybe 3 feet max from the collectors. I lengthened it out to where it is now and put the 45 deg elbows on. It has tamed the noise considerably from what it was when I got it. It is still a ticket magnet here in the Peoples' Republik of New Yorke, but it was much worse before. Initially I wanted to turn them out and have them dump just ahead of the rear wheels, but my fuel tanks and springs were making things too much of a pain. The system already in place was very new and nicely done with all the joints nicely welded and I didn't want to tear that all apart. I would have if it was old and junky, but the system was put in very recently before I bought the truck. Last edited by RIDE-RED 350r; 04-04-2014 at 08:01 AM. |
04-04-2014, 09:43 AM | #8 |
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
x2.
But - I might be getting old. Plus I live in a suburban area.
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
04-04-2014, 09:44 AM | #9 |
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
I would be interested to hear what you have to say about flowmasters if you are willing to share.
K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
04-04-2014, 10:54 AM | #10 |
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
well performance for one thing they are know as chokemasters by most. there loud and rattle. that delta flow stuff rust out and start to blow out the back and the case cracks. it was on the truck when it was bought.
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04-07-2014, 07:48 AM | #11 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
78 has a walker true dual kit,now with tails removed,after the cherry bombs.
79 has custom bent duals,with and H pipe to flowmasters. both cleaned out manifolds to pipes @ 2.25, out before the rear tires.... lol I'm sure the neighbours know when I leave.
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
04-07-2014, 09:14 AM | #12 |
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Location: Emmaus, Pa
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
Im running headers, true duals, flowmaster delta 50's and come out behind the tire.
2 1/4" at the moment, but I have a full set of the same in 2 1/2" sitting in my garage waiting to go under it. I don't experience any real issues with my flows, other then the delta ones are a little rattly. The 50's are to quiet for me, so the new setup has 40's again. I am also running center in, center out. Those mufflers are little, so shouldn't really matter much for your application. Mine are hung from the factory spots on the crossmember right at the back of the cab, and again back by the springs.
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77 SB Stepside in a bunch of pieces scattered around the garage. |
04-07-2014, 05:50 PM | #13 | |
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
Quote:
Never had any rust, cracks, or rattles on mine. Guess maybe I should buy a lottery ticket. When my truck ran...it had the Summit turbo mufflers with Dynomax headers. Sounded great...and cheap.
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'69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73 Last edited by 85Bowtie; 04-07-2014 at 06:02 PM. |
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04-08-2014, 05:20 AM | #14 | |
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
Quote:
guess i better buy a lotto ticket too, for some reason my delta flow 50's dont rattle or rust either....bummer |
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04-08-2014, 07:26 AM | #15 | |||
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
Quote:
Quote:
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As a result of their sponsorship of the NMCA/NSCA “Fastest Street Car” series I’ve had 4” Flowmasters on my Chevelle for about 20 years. No issues and they have that distinctive Flowmaster sound. A lot of guys around here run them on their 6 and 7 second street cars. I imagine they would be too loud for daily use (for me, anyway). K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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04-08-2014, 09:14 AM | #16 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
I'm running these Super40s they sound great.
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
04-08-2014, 09:32 AM | #17 |
Crazy
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Location: Emmaus, Pa
Posts: 203
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Re: What muffler offset are you running? I plan on Spintechs. True duels with side e
I ran my first set for 13 years through all the PA salt plowing every winter and never had any issues. I actually would have still ran them, but just went new and gave the old ones to my uncle for his square.
I have no issues with the 50's I have now, other then they are a hair quieter then I would prefer. otherwise I would buy another set again and again and again. Good luck with your purchase though.
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77 SB Stepside in a bunch of pieces scattered around the garage. |
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