My rig is a 75 ford f100 390 that was converted from a 360. Edelbrock performer intake with 75 0 holley vaccum secondary's. Edelbrock performer plus cam. I got the stock manifolds on there right now with duals that have some random mufflers on there and then turn downs right before the axles . I want to get a set of good soundin mufflers that lets the 390 be heard. I ain't to crazy about glasspacks. But let me know what y'all think I'd appreciate it.

 

Any of the flowmaster 40 series are going to be pretty much as loud as you want.

 

HIO silver recommends them and I am planning on running them on my truck- moroso spiral flows

Moroso Spiral Flow Mufflers - Free Shipping on All Orders @ JEGS

 

I spent most of my life running race cars mostly drag racing. With people moving out towards the tracks and complaining about a track they knew about before ever moving and lawyers winning the fight we had to start running mufflers.
Somebody with money and too much time got the 20 most popular mufflers together and rated them by decibel reduction and HP loss. Oddly enough flow masters scored one of the worst for HP loss. Borlas xs muffler had the least about of loss and had the lowest decibel rating of any other high performance muffler. Only real downside is they are expensive. I ran them on my 650hp 454 big block for years and I put them on everything I own. Quietest car on the track. Sounds great too.

 

Cherry bomb extremes, they're not glass packs, they flow like a glass pack, but are louder

 

Turbo style mufflers work pretty well... somewhat mellow at idle and cruise and let you know they are there when you push it. They are available in parts store brand and many others. Dynomax makes a nice one (Summit).

 

Does anybody have links to the studies? I would love to read through some.

 

I have flowmaster 40's I like them for about 10 minutes then they drive me nuts to loud and way to much drone

 

Well I'm glad you said that I was considering the flow masters.

 

Is your cab insulated? I have run 40's and super 10's in the past with no drone. However my cab is heavily insulated.

 

When I bought my truck it flowmaster 40's with the exhaust exiting out the side of the bed on each side. While it did sound cool it got annoying after a while. I guess I'm getting old, I redid the exhaust to exit the rear of the truck and that helped a ton. Now I can actually hear the radio!

 

I had Flowmasters and moved to Magnaflows, night and day difference for the better.

 

X2 on the Moroso mufflers.

I liked the sound of the Heartthrob glasspack I had on my built 460. Single 4x36" bodied muffler, stock mani's and 2-1 with 2.5" pipe and turnout before cab. Not too loud in the cab, and didn't drone. Same muffler I have on my 300, and still sounds good.

To me, flowmasters sound "hollow". I've never been a fan of them.

-Jameson

 

also just switched from flow master super short race muffler the thing is like 10 inches long maybe to magnaflow round 24in long . both 3 inch in and out and it is considerably quitter which is what I was after. if I rev it it barks unlike before it was just really loud then really really loud revved. I wanted a nice sound and less trashy hillbilly sound.

no offense to anyone out there about trashy hillbilly comment, just around here in n east ohio a lot of white trash think they are they next dale jr because there 95 chevy has straight pipe and no cats. its annoying.