Hello All, Yeah its the PITA again.... Thinking about going to a different muffler for my truck, as funds are too tight right now, to do a catback system. I'm wondering if anyone has just put an aftermarket muffler ona 4.8L, and what kind of sound did you get? My brother has Magnaflow mufflers on his Jeep Grand Cherokee, and they sound nice under load, but not too loud idling. The wife has the Gibson catback system on her Avalanche, and it sounds awesome. I'm wondering what muffler i need, to replace the oem muffler. The oem muffler is 25" long, w/o the inlet/outlet. The end of my oem tailpipe is 2.75" wide. The exhaust on it is stock, but just wondering what i need to get a little rumble, but can hear myself think going down the road. Or should i go to like Meineke or someplace and ask them? I don't want cherry bombs or thrush mufflers, just a little more rumble than stock. Any suggestions will be greatly appreciated, Thanx, Jim
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2002 Chevrolet Avalanche. K&N CAI, 5.3L, Will eventually get more mods but not right now, saving up for Flowmaster Catback system first and foremost.
Heres what i did- (i've had both flowmaster and magnaflows so i know what you mean.) The way i got the magnaflow to sound more aggressive was by getting a smaller muffler 5"H x 8"W x18"L (model #12259 i think) then dumped it with a turn down in front of the rear axle. Great rumble! Very deep tone. Inside the cab too.
i've heard the 50 series too they sound really good very similar in sound to the set up i mentioned, only magnaflows straight through design will deliver the better performance. Really you won't go wrong either way, good luck!
The 40 series flowmasters that I have with my free flowing setup is not teribble loud. 40s generally are, but I really opened mine up so it is not too loud. Running on the highway the CAI i slouder than the mufflers.
08' Silverado Crew Cab Z-71 Duramaxx Stock, for now.
Plans - Programmer, 6" lift, 37s, outrunning my employee's cayanne
really? my super 40's suck on the highway! im tryin to get rid of them and get either 44's or i guess 40's. Is there the drone noise with the 40's? Because thats what i hate about mine, you can hear it over my badass sterio, and thats no good.
-2005 Mercury Mariner
Reliable daily driver
-2000 Chevrolet 2500
6.0 4L80E 4X4
235k and still truckin'
you can always get a resonator to quiet those flows down in the cab.
89 silverado new 5.7, rebuilt700R4, RCLB Debadged, 16x8 torque 2s in LT265/75/16 BFGS, 2.73s , opened up intake, airade tb spacer, headers with dual high flow cats and 40 series dumped, audiobahn spkers with memphis 10s to a rockford amp.