Allright, I have a 1986 F-150 300-6 that is about due up for a muffler. It's been rusted at the inlet since i bought the truck a couple months ago, but it's putt, putt, putt at idle is starting to pop and rumble now.

What I'm looking for is what the title says. I want this truck as quiet as can be within a reasonable budget. I'll be honest, i've never had a truck with a totally intact stock muffler so I don't know how quiet one is stock. I don't care about tone, i don't care about presence. I want quiet.

Is my best bet a stock round body replacement or is there something just as quiet in a similar price range out there ($50ish).

For packaging reasons a small body muffler like a 30 or 36" glasspack would be nice, but i don't want the glasspack noise.

Justin

 

Just go with a stock muffler

 

Yeah--a stock muffer and behind that--install a resonator--like on the luxury cars.

 

For a while I had two 34 inch glasspacks behind the 300 in my 82. My factory exhaust fell off at the manifold downpipe. I clamped the two packs together, and then clamped them to the downpipe. They were long enough that the exhaust dumped right after the cab, it was pretty quiet.

Once I got some money saved up I bought a section of pipe to bolt to the downpipe, I then used the factory canister muffler and tail pipe that came off my 96 when I put duals on it. With the canister muffler it was extremely quiet, couldn't be heard unless I lowered my head within a foot or so of the tailpipe.

If you willing to spend the dough for one a factory canister style muffler would be the best choice. If you were closer I'd glady give you the one I cut off my 86.

 

I'm looking at the OE cansiter style right, at $100 it's more than i wanted to spend *right now* but it'll beat buying the $50 "one year" canister muffler that'll rot out in 13 months to the day and have to be replaced again.

Justin

 

http://www.cherrybomb.com/vortex-mufflers.html Get one of the two output ones
and split it to each side half the noise to each side. A cat convertor always keeps
a motor quiet. If yours was gutted or removed it will definately quiet it down. I wish
I left mine stock sometimes like when out trail running looking for animals or when
out wheeling and near some houses that got built near many of my old trails.

 

I'm really thinking 2.5" glasspack inline with a stock muffler. the glasspack would act as a pre-muffler and resonator to a point, and then the stock muffler would really shut it up. running the 2.5" on a 2.25" system also shouldn't create much of a restriction prior to the plug of a stock muffler.

Justin

 

Avacuum gauge connected to your motor will tell you if the exhaust changes make
any difference in regards to restriction. It really takes alot to give a restriction that
will cause a big performance drop unless you are on the drag strip!!