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Im looking for a good mufflers for my 6.0 build ,right now Ive got 40 series Flowmasters and they are way to noisey with the engine stock and Im changing cam,and putting some 243 heads milled .030 so compression is going to be in the high 10s to 11 to 1 so I know that the flowmasters are going to be even worse .trying to keep the sound down without killing the Power .Any suggestions?
I took off my flowmaster for magnaflow and couldn't be happier. I got the 14 inch single in dual out. If I did it again I'd go with a longer like 21 inches or whatever the next size up is.
I did the same, swapped a flowmaster for a magnaflow. Loved it. But....once i did my cam, it got loud again. But I'm happy with the sound. So it's staying like it is.
hard to tame a cammed engine, you can make it sound better but taming it is something, remember you muff it to much youll loose power
I'll attach videos of 5.3s and 6.0s cammed with magnaflows and spintech. Both great choices over a flow master. With the magnaflows the bigger the body the quieter it will be.
4x9x14" quiet but loud at WOT
5x8x18" is quiet cammed
5x8x24" really quiet cammed
5x11x22" like stock but aggressive as all get out.
3.5" spintech shootout pro cammed 5.3 really quiet compared to flow master but rips nuts at WOT.
Bone stock 5.3 4x9x14" stock manifolds and cats
http://youtu.be/qiXcf_79xkU
Cammed 5.3 the spintech set up mentioned above low lift cam LT w/ORY
http://youtu.be/C2gMmxPDLfc
Bone stock ls2/6.0 no cats 5x11x22" magnaflow
http://youtu.be/Tgke66664AY
5.3 low lift cam LT w/ORY 5x8x18" magnaflow
http://youtu.be/cCmzIgn75Lg
5.3 magnaflow bullets no cats
http://s194.photobucket.com/user/red...0_302.mp4.html
Lq4/6.0 low lift cam milled 317s LT w/ORY 3.5" ypipe back to a 3.5" 5x11x22" magnaflow turned out in front of rear tire. Was super quiet.
http://s194.photobucket.com/user/red...2_551.mp4.html