Exhaust Question?

[Custom/20]

Hello to all. I recently had a completely new exhaust system put on with long tube headers and I'm gonna be going back to the ram horns because it's to loud for my taste. As you can see in the photo there's is only about a foot of pipe after the ram horns. My question is would it be OK to drive with that little of pipe for about 2 miles?

[demian5]

Heck yes! And with your foot in the gas as much as possible for those 2 miles.

[jerry moss]

you can drive it with no worries.

[1972RedNeck]

Originally Posted by Custom/20

Hello to all. I recently had a completely new exhaust system put on with long tube headers and I'm gonna be going back to the ram horns because it's to loud for my taste.

Shouldn't you be looking into getting different mufflers?

[hdff]

Originally Posted by 1972RedNeck

Shouldn't you be looking into getting different mufflers?

what mufflers you running???

[Custom/20]

Originally Posted by hdff

what mufflers you running???

I'm running dual flow master 40s. At idle with the headers there is so much drone noise from 600 rpm to 900 rpm that is hurts my head. Don't get me wrong I like the sound but this drone has got to go.

[ryanv70c10]

Originally Posted by Custom/20

I'm running dual flow master 40s. At idle with the headers there is so much drone noise from 600 rpm to 900 rpm that is hurts my head. Don't get me wrong I like the sound but this drone has got to go.

It will be interesting to see if the manifolds help. I would think the drone is the flows. They are notorious for it.

Does you system have an "h" pipe, or some type of crossover ?

[Custom/20]

Originally Posted by ryanv70c10

It will be interesting to see if the manifolds help. I would think the drone is the flows. They are notorious for it.

Does you system have an "h" pipe, or some type of crossover ?

Nope, just 2½ inch straight duals. I'll be swapping out the manifolds after Christmas so if the drone is still there then I might be going back to glass packs...

[ryanv70c10]

Originally Posted by Custom/20

Nope, just 2½ inch straight duals. I'll be swapping out the manifolds after Christmas so if the drone is still there then I might be going back to glass packs...

I would try an h pipe first. They really mellow out drones. I had super turbos with no h pipe and I could not stand the drone. Put the h pipe on and it was super mellow and quiet. This was a modded 283 in a 64 Nova.

[Custom/20]

Originally Posted by ryanv70c10

I would try an h pipe first. They really mellow out drones. I had super turbos with no h pipe and I could not stand the drone. Put the h pipe on and it was super mellow and quiet. This was a modded 283 in a 64 Nova.

Depending on the price I might have an h pipe installed as well.

[hdff]

also where do your pipes exit, if they are dumped before the axle that is a problem. also flowmaster 40's are loud, go to a different muffler, if you like flowmasters try a 50 series. I have dynomax welded on my BB and the drone is not to bad. I have mid length headers , an H and exit behind the rear tires and I also have a cam.. just curious also what long tubes did you use and how far do they stick below the frame?

[biketopia]

I'd swap out mufflers before I took off headers and went back to the manifolds. Like hdff said look into a 50 series muffler or I've always loved the dynamax turbo mufflers, or the summit knock off, cheap and sound great.

[James the III]

My car with iron manifolds and flowmasters drone..
change the mufflers..

[TwoFiftyShifter]

I have headers and unknown mufflers with dual side exit behind the tires. It is very quiet. Even at cruise, 3,000 rpm, not loud at all. I actually want louder.

Keep the headers!

[BugzC10]

I switched from 40s to 50s. 50’s are definitly quieter. Changing out the headers and leaving the 40s is not going to make much difference. As mentioned if you are dumping the exhaust under the truck you will get more resonant sound. You start running out of room if you want to go with a larger/quieter muffler like a 70 series. You have to get creative with pipe routing and muffler placement to accommodate a larger mufflers. I installed an H pipe, didn't like the "motor boat" sound at idle. Took it off. I guess it all depends on your cam. I also have 2-1/2 pipes, mild cam.

[Rod Run]

Your drone is coming from your Flowmasters and not your headers

[Oldblue68chevy]

I had flowmasters on an 84 monte carlo first with an h pipe which I loved the sound. Due to a transmission swap I had to get rid of the h pipe and hate the sound of it. I would say try an h pipe first. If you dont like the sound after that try different mufflers. The manifolds will not do anything for the drone.

[68Stepbed]

Before you go and do something you'll regret, read carefully. In many cases, manifolds can have a slightly louder tone than headers. Headers equal out the tones and at times, depending on how they're made, cancel out some of the mismatched tones. [If that makes any sense.]

The loud drone most likely isn't the headers, and in some ways will actually get worse with the manifolds. My suggestion is to get rid of the Flowmasters. They're notorious for drone because of the chambered design. The chambers hold in the sound and reverbs it back in forth inside the muffler. Also, in my experience, the 50 series Flowmaster are less noisy, but the ones I had droned worse inside the cab. This was probably because of the reverb effect, happening in three chambers instead of two. I suggest a non-chambered muffler like Magnaflow or Black Widow. My only complaint with Magnaflow is they're almost too quiet at idle. I've never ran a set of Black Widows, but the reviews are great, and YouTube videos prove they have an aggressive sound.

Changing from headers to manifolds with the current mufflers WILL NOT make it it any more tolerable!! You will have spent money to accomplish nothing.

[1972RedNeck]

Or look into a set of resonators.

[demian5]

Get a camry to daily drive for a drone free commute

I gotta ask, are the mufflers under the cab or the bed? You know there is enough room to put a couple magnaflows under the corners of the bed to get the mufflers as far away as you can from the passenger compartment.

[dmjlambert]

I also have ram horns with dual exhaust with no H-pipe. I have some generic mufflers that the muffler shop set me up with. Do you guys have any experience with adding J-pipes? They are supposedly tuned by making them a specific length and they cancel drone. From what I've read it sounds scientific. Better than H-pipe?

[HO455]

Here is a link to a thread with some J Pipe information. If my Burban drones after the new exhaust is installed I will be going down this road.

http://67-72chevytrucks.com/vboard/s...=680126&page=8

[EagleChief]

As the others have said... get rid of the Flowmasters. I like the MagnaFlow mufflers, but there are several others out there that are great. I have an 18" MagnaFlow on my daily driver and it is darn near perfect. Borla makes a great muffler, but they are somewhat expensive.

Change the mufflers first and see what that does. Then start with the other parts.

[rowdy350]

I feel ya! Just put shortie headers and 2.5 pipes with a H and flow masters. Drone was horrible. Sounds upside was fantastic! Drone in the cab was miserable. I put the "Hymotlz Chambers" on. No effect. Changed the mufflers to stock turbos. No effect. Finally put Stock resonators on the tail pipes at the bumper!!! Presto fixed it. Flow master back on. No drone. "Hymolts Chambers" cut off. No drone. My exhaust dumps at the rear bumper. Good luck. It's gonna cost you money to figure it out

[NJRC10]

I agree get rid of flowmasters and get magna flow or the knockoff thunderbolt. I have used both to replace flowmasters and they have no drone and in my opinion sound much crisper/cleaner.