I need to quiet down my 383 in my hatchback at idle.I was think of running 4 hi flow cats and 2 hooker muffler.Has anyone done it? What do people recommend?
How to quieten my 383 stroker?
Started by
_gallego_
, Oct 06 2011 09:20 PM
19 replies to this topic
#2
MRLXSS
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Posted 06 October 2011 - 09:25 PM
What system do u have? X pipe or h pipe? How big? How loud/quiet do u want it? Cats probably won't do much...
#3
S pack
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Posted 06 October 2011 - 10:01 PM
I need to quiet down my 383 in my hatchback at idle.I was think of running 4 hi flow cats and 2 hooker muffler.Has anyone done it? What do people recommend?
WOW, if it's too loud at idle what's it like when your cruising or accelerating?
Cheers
Dave
#4
_gallego_
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Posted 06 October 2011 - 10:05 PM
Its very loud when cruisin.Im running a 3 inch with x-pipe and 2 cats,no mufflers ,sounds tough but too loud.
#6
_nicko61_
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Posted 06 October 2011 - 10:11 PM
wow i wonder why its loud? funny ,no mufflers ,
maybe just maybe that has something to do with it,lol
put a pair of hookers on it and it will take most of the noise out
maybe just maybe that has something to do with it,lol
put a pair of hookers on it and it will take most of the noise out
#7
_gallego_
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Posted 06 October 2011 - 10:24 PM
I think it will still be loud when i put the 2 hookers mufflers.I think there is a gentlemen with the orange ss thats running 4 cats and 2 mufflers thats on the forum.
#8
_shan620_
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Posted 06 October 2011 - 10:32 PM
i got a easy solution for u......... i have a 202 sitting out the back. How bout we swap and i'll buy u a new exhaust to suit the 202? Lol
#9
dattoman
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Posted 06 October 2011 - 10:41 PM
4 cats is silly
Just put some decent mufflers on it
Just put some decent mufflers on it
#10
_Quagmire_
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Posted 06 October 2011 - 10:56 PM
hookers are great....in moderation 
ooops you ment the exhaust lol
which is the one you can "add" canisters too quieten it down hookers or supertrapps?
i'd try a set of them on the back
you can add some standard style ones before the diff if it's still to loud
ooops you ment the exhaust lol
which is the one you can "add" canisters too quieten it down hookers or supertrapps?
i'd try a set of them on the back
you can add some standard style ones before the diff if it's still to loud
#11
_TorYoda_
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Posted 06 October 2011 - 11:56 PM
Go with the Hooker 'Aerochamber'..... a bloody good muffler that lasts for at least ten years without changing its note. I have Supertrapps on my current car and you get the best of both with them..... straight through sound and performance without the diffusers or smooth and quiet with them fitted. Other advantage of Supertrapps is they can be repacked!
#12
ls2lxhatch
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Posted 07 October 2011 - 12:23 AM
Why do you have cats on a 383?
#13
_LS1 Hatch_
_LS1 Hatch_
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Posted 07 October 2011 - 01:23 AM
4 cats is silly
Just put some decent mufflers on it
I agree....there is a large assortment of mufflers out there to suit alot of situations, and finding something to quiet it down should not be a drama. A larger case is going to quieten it too, but room gets to be an issue. Magnaflow and some Borla are not too bad even in the somewhat smaller sizes. Even a simple 3 chamber flowmaster is not tooooo bad.
I run Spintech mufflers with a X pipe (in a more mild engine than your though I'd say) but at idle and lower rpms it sounds very mild. , nearly tame.
Have a mate with magnaflows on a big block convertable (Dodge Challenger R/T) and they are pretty mellow as well.
#14
MRLXSS
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Posted 07 October 2011 - 08:57 AM
I have just put Hooker aerochambers on my 355, they sound bloody sweet as!
I gotta say, they don't quiet it down a heap (Still illegal). But if you have been cruising around without mufflers at all, then yeah, you will notice a HUGE difference!
I gotta say, they don't quiet it down a heap (Still illegal). But if you have been cruising around without mufflers at all, then yeah, you will notice a HUGE difference!
#15
GMHL34
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Posted 07 October 2011 - 09:25 PM
twin turbos 
#16
r2160
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Posted 08 October 2011 - 09:35 AM
If you are after performance, wouldnt Supertrapps be better? They are adjustable so you can decide on the noise and performance
cheers
Glenn
cheers
Glenn
#17
unclefestal34s
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Posted 08 October 2011 - 10:02 AM
(shan620 your spot on)I need to quiet down my 383 in my hatchback at idle.I was think of running 4 hi flow cats and 2 hooker muffler.Has anyone done it? What do people recommend?
put a 138 red motor in it that 'll quieten it down and perhaps give you the idle your looking for...should purr like a kitten..
seriously mate you go to trouble to have such big cubes and perfomance then want to strangle it..sometimes i wonder if the right people own and build high perfomance cars..just my thoughts and opinion..
#18
rexy
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Posted 08 October 2011 - 10:45 PM
The LJ with a pair of cats and a pretty much straight through twin 2.5 inch system was 103db when tested. A pair of resonators (the longest we could fit) brought it down to 95 db. Cheap and effective. No change in power as far as I can feel.
#19
_Herne_
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Posted 08 October 2011 - 11:01 PM
I use 2 redbacks and 2 hot dogs, might be just over 97 dB but not by much plus I still have a great note.
Herne
Herne
#20
mr5000
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Posted 09 October 2011 - 10:09 AM
is it injected a nice set of mufflers would quiet it down heaps and if once you get them fitted its till to loud try some resonators or make up a section flanged with some "street" mufflers if your worried about getting pinged then have a nother set of mufflers flanged for when you want to give it the boot
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