I have just ordered the Flowtech After Burnewr 2 1/2" in, with duel 2 1/2" out muffler for my 4.9 swap. I guess I should have asked before I ordered if anyone has used this and how loud is it installed on a 4.9. I want a little rumble, but I dont want to have a headach after driving to Dallas and back from the Houston area.

It will probably be somewhere in the middle of these... Both have the flowtech afterburner 3" in dual 2 1/2" out.





On the highway the 4.3 car is very similar to the 2.8 as far as noise level. The SBC car starts to quiet down above 70 mph.

quote Originally posted by josef644: I have just ordered the Flowtech After Burnewr 2 1/2" in, with duel 2 1/2" out muffler for my 4.9 swap. I guess I should have asked before I ordered if anyone has used this and how loud is it installed on a 4.9. I want a little rumble, but I dont want to have a headach after driving to Dallas and back from the Houston area.

The Flotech afterburner Muffler is a bit loud. You can take the edge off and get a nice looks by installing a set of Heddman hot tips dual resonators but don't expect it to sound quiet.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

quote Originally posted by Dennis LaGrua: The Flotech afterburner Muffler is a bit loud. You can take the edge off and get a nice looks by installing a set of Heddman hot tips dual resonators but don't expect it to sound quiet.

Dennis what do you reccommend I look for?
Joe

The Afrer burner and a 70 series Flow master sound close. The flowmaster is a better built unit, more ezpensive. Stay away from the 30 series Flowmaster, has that backrapping at certain rpms.