Amc V8 Flomaster dynomax magnaflow - JeepForum.com

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post #1 of 35 Old 03-03-2014, 09:02 PM Thread Starter
nixer600
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Amc V8 Flomaster dynomax magnaflow

I'm wanting to hear some AMC v8 exhaust noise.

I've heard the flomasters on you tube.

I couldn't find any decent magnaflow or dynomax videos.

If you post a vid or a link to a vid please tell if your running a CAT, or turn downs,
Shorties, full exhaust or how much pipe you have after the muffler. Anything that will effect the sound.

I'm not a noooob or mall crawler,
I'm just at the point in my frame up, one ton build and I'm thinking I might want a different sounding V8

Thanks

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post #2 of 35 Old 03-03-2014, 09:16 PM
Matt1981CJ7
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AMC 360, stock exhaust manifolds, custom cross-over to single tailpipe, Flo-Pro CAT and muffler.

Matt

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post #3 of 35 Old 03-03-2014, 10:23 PM Thread Starter
nixer600
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Cool, keep them coming,
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post #4 of 35 Old 03-03-2014, 10:26 PM Thread Starter
nixer600
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Quote:
Originally Posted by Matt1981CJ7 View Post
AMC 360, stock exhaust manifolds, custom cross-over to single tailpipe, Flo-Pro CAT and muffler.

Matt

http://www.youtube.com/watch?v=p5Nb7SfnJPs

Thanks for the pic, I've been thinking about running my exhaust like that for simplicity.
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post #5 of 35 Old 03-04-2014, 06:27 AM
Matt1981CJ7
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Quote:
Originally Posted by nixer600 View Post
Thanks for the pic, I've been thinking about running my exhaust like that for simplicity.
You're welcome.

The pipe is 2.5" to the Y, 3" from the Y to the muffler, and a 2.5" tailpipe.

Matt
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post #6 of 35 Old 03-04-2014, 10:56 AM
ScroungerLee
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Matt, why the 3" pipe and then 2.5" tailpipe? Was that just the easiest way to make the connections without adapters? I imaging the smaller tailpipe is either because it was easier to fit or else because it is, in theory, slightly quieter?
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post #7 of 35 Old 03-04-2014, 02:20 PM
Matt1981CJ7
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Quote:
Originally Posted by ScroungerLee
Matt, why the 3" pipe and then 2.5" tailpipe? Was that just the easiest way to make the connections without adapters? I imaging the smaller tailpipe is either because it was easier to fit or else because it is, in theory, slightly quieter?
Good question Lee. My muffler guy built it that way, and I didn't ask him about it. I did tell him I wanted a nice quiet exhaust, so maybe that's the reason. Matt
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post #8 of 35 Old 03-04-2014, 03:03 PM
LumpyGrits
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Sweet look'n pipe work!
Do you have any concern with the pipes so close to the starter and oil pan?
IMHO, I would drill a 1/8" hole in your muffler, just under the inlet, as a drain hole for condensation etc.
It sure wasn't your muffler guy's first day when he bent those tubes.
LG

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post #9 of 35 Old 03-05-2014, 07:49 AM Thread Starter
nixer600
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Anyone else have some sound to share?
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post #10 of 35 Old 03-05-2014, 01:17 PM
Knucklehead
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.060" over AMC 304, 9:1 CR, Howards 214*/220* cam, pocket ported heads with 1.94/1.5" SB valves. Exhaust consists of full length Hedman Elite headers, 2 1/2" collectors and pipes into 3" Y-type merge pipe, a Summit 3" welded muffler, and 3" pipe that dumps out the drivers side behind the rear wheel. Engine was a little cold when taken today.
Sound clip:

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DSC02281small.JPG  

WJ Build: http://www.pirate4x4.com/forum/jeep-cherokee/2171458-wj-build-sd-axles.html
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post #11 of 35 Old 03-05-2014, 03:46 PM
cjjon7
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Garage
AMC 360, +.40 over in the chambers, Stock heads and manifolds, mild cam at .495 exhaust and .495 on the intake.

Custom (My Garage) welded 2.25" i.d. dual exhaust with thrush welded mufflers..(30$ at summit).




Heres a sound clip.
http://s225.photobucket.com/user/jre...54130.mp4.html


And a good link on JF....

http://www.jeepforum.com/forum/f8/cj...quest-1437654/
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post #12 of 35 Old 03-06-2014, 09:03 AM Thread Starter
nixer600
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This is getting complicated, there is some great sounds in here.

Keep then coming.




Thanks for the link! Also good sounds there,
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post #13 of 35 Old 03-06-2014, 09:41 AM
swatson454
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Very nice work, knucklehead. That would sound extremely sarcastic if that wasn't your screen name


Shawn

Live in a way that those who know you but don't know God will come to know God because they know you.
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post #14 of 35 Old 03-06-2014, 10:38 AM
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Quote:
Originally Posted by swatson454 View Post
Very nice work, knucklehead. That would sound extremely sarcastic if that wasn't your screen name

Shawn
Thanks...I think. I've been getting better at piecing together exhaust systems from prebent sections since doing a similar system on my Ramcharger a few years ago. I should have sent the CJ8 system out to get coated but I was too cheap/poor/lazy/in a rush (you pick the adjective). Still not totally in love with the sound, could maybe be a little deeper, but it will do fine for the price.

WJ Build: http://www.pirate4x4.com/forum/jeep-cherokee/2171458-wj-build-sd-axles.html
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post #15 of 35 Old 03-06-2014, 01:55 PM
rsg1963
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I have a 40 series Flowmaster 2.5" in and out on my AMC 360. Very tough muffler as I've had rocks grind over it several times without issue. BUT...I have magnaflow muffler on my RAM 1500 Hemi and I have to say it sounds 100% better (richer, deeper, whatever). But I also feel it would open up like a can of tuna if I ever subjected that thin case to the environment the Flowmaster has been in. Maybe not, but there is my 2c.

Side note: Some of you guys have some really nice work done on your rigs, congratz! A frame-off is a pipe dream for me. But it's really nice to see quality work being done.

Last edited by rsg1963; 03-06-2014 at 02:00 PM. Reason: props for some of the pics I've seen on this thread.
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