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02-19-2003, 01:28 PM | #1 |
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Location: chimayo, nm, usa
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Flowmaster 40 Series Question
I am planning on replacing my current cheap crappy turbo mufflers with some 40 series flows. I know this is a dumb question, but my current mufflers are between the trailing arm and drive shaft with only a few inches to spare between there, and I'm just wondering if anyone else has flowmasters there and if there's any problem with clearance issues or if the flows are wider. The reason I want to ask before I order, is because the muffler shop I called suggested maybe I might need round mufflers because of the trailing arms when I told him it was a 72. I just want to make sure they will fit in there. Thanks in advance.
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02-19-2003, 01:59 PM | #2 |
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I have some and they just barely fit, but they do work fine. If you want, I can take a picture this afternoon and e-mail it to you. Are you sure you want flowmasters? I don't think they flow that well, and I am going to be replacing mine with a set of hooker mufflers.
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70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
02-19-2003, 01:59 PM | #3 |
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Mine are mounted sideways. I know the picture is really dark, and hard to see, but there are no clearance problems and my truck is lowered 4 inches in the rear. I love mine...
Riley
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72 Chevy short stepside 350/350 tilt, vintage air a/c sunset Orange Metallic paint Early Classic 2.5/4 drop eagle series 211 wheels |
02-19-2003, 02:00 PM | #4 |
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I’m currently running 40’s with 2” pipes on mine and had no problems mounting them I see If I can get a picture and post it.
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1967 C-10 Use to be Riptide |
02-19-2003, 02:09 PM | #5 |
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Here you go not the best pick but hope it can help.
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1967 C-10 Use to be Riptide |
02-19-2003, 02:26 PM | #6 |
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I was thinking why not just put the mufflers before the trailing arm cross member. but I guess that would be an issue if you have a shorter wheel base truck. I think my suburban should have enough room to have them in front. Do you guys see a problem with that?
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1969 Chevy Project SWB Fleet, 20s, 5.3, t56, in the weeds. 1970 Chevy Truck cab on a 1979 Jimmy frame-8.1 liter 496 bbc/sm465/np203-jeds doubler-np205/d60/14bff Welded/42 tsls on recentered H1s 1998 Chevy Crew Cab K3500 SAS'd with hpd60, links and swayaway coilovers. 8.1l vortec DD/towrig "I like long walks, especially when they are taken by people who annoy me. " |
02-19-2003, 02:46 PM | #7 |
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Mine are also mounted like Riles72 - I also have a 4 inch drop - no clearance problems...
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02-19-2003, 03:53 PM | #8 |
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Since my plan was to lower my truck, AND since it hadn't been done at the time, I ran my mufflers under the cab, between the frame rails and the rocker panels. I know this doesn't help, but it is what I did.
I'd like to run tail pipes to the rear, and I guess it will happen sometime in the future.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
02-19-2003, 04:24 PM | #9 |
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I did mine exactly like Myride67c10. 2.5" pipe with flowmaster 40's.
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02-19-2003, 04:41 PM | #10 |
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Well, it looks like I'm screwed, I never realized the flows were so damn wide. Mine are between the driveshaft and trailing arm with a 4" drop too, and there is about 2" clearance on both sides of the muffler. I was trying to avoid paying for more labor, I might as well do the whole exhaust if I'm going to pay for them to re bend most of the pipes. I will take a measurement tonight on the width of my mufflers, and compare that to what the flowmaster specs of 10" wide, and take it from there before I make any decisions. Thanks, I will keep you posted to my findings...
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02-19-2003, 05:13 PM | #11 |
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I had mine like Myride67c10 but they where vertical. Get the center in center out flow-masters.
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02-19-2003, 05:14 PM | #12 |
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Is there any problem with running Flowmaster 40's under a wood bed? I've heard those things make some massive heat, and that doesn't sound good for a wooden bed. Are there heat shields for these things?
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02-19-2003, 05:29 PM | #13 |
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I've never tried to see how much heat they put off, but I imagine they wouldn't be much hotter than the pipes themselves. Besides the majority of the time you are moving so I would think airflow would take care of most of the heat, an I don’t think that it would collect enough heat to cause damage while you are at an idle.
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1967 C-10 Use to be Riptide |
02-19-2003, 05:39 PM | #14 |
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Those Flowmasters get HOT.....if you run them under a wood bed, I would watch the clearance, & use sheilds.....crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
02-19-2003, 06:05 PM | #15 |
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Jays68yak, I have my crappy turbo's right at the back of the cab. They are turned down right before the trailing arm krossmember. I am planning going ahead and bolting a set of 40 series flows in the the place of the turbo's.
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70' C-10 LWB Fleetside 4.5/6 drop |
02-19-2003, 07:49 PM | #16 |
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Does anyone know if and how much wider the 40 series are than the crappy turbos?
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02-20-2003, 12:08 AM | #17 |
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I have three scars on my left arm to prove how hot they get! Within two miles and were hot enough to literally melt the skin on my arm looked like chewing gum when I jerked back. I would definately use heat shields on a wood floor bed.
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02-20-2003, 12:55 AM | #18 |
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They get hot because they have so much restriction with the many baffles that they have. I have heard many stories about vehicles (including trucks with wood beds) catching on fire from them.
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70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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