***4" mufflex finally installed!!!***
Thread Starter
TECH Addict
Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
yeah i love the sound of it, no rasp, real deep and throaty, not loud in the car, just loud enough outside the car(which is pretty loud). and yeah my guy had to make his own hanger for the rear. he also had tweak my TSP y and fm merge when he welded it all together, but the end product gives me more clearance then TD's and the rumbler cat back. custom welded FTW. but i really need to do poly motor mounts, the header slap is pretty bad.
yeah we had to adjust the drivers rear hanger the exhaust came with and reposition it and reweld it to where it'd hang the way we wanted. After it was all done you cant tell we even moved it.
Thread Starter
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Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
i had an issue with the valve seals and guides, got it fixed though.
here's the result of a couple pushed up valve seals. smokin like a damn chimney.
http://www.youtube.com/watch?v=vT7xBllQMe4
only blows a tiny bit of smoke now, but thats normal. i'll try to get some more vids up soon.
edit: still need to get around to painting the muffler.
here's the result of a couple pushed up valve seals. smokin like a damn chimney.
http://www.youtube.com/watch?v=vT7xBllQMe4
only blows a tiny bit of smoke now, but thats normal. i'll try to get some more vids up soon.
edit: still need to get around to painting the muffler.
Awesome, man!!
I'm with you when you say you need to paint the muffler. The giant box under the car isn't all that attractive. But, like you stated earlier in the thread, its not like you have your head stuck under the car all the time. A little disguise in the form of some high temp paint wouldn't hurt though.
Like I said, car sounds great. Good choice of setup.
I'm with you when you say you need to paint the muffler. The giant box under the car isn't all that attractive. But, like you stated earlier in the thread, its not like you have your head stuck under the car all the time. A little disguise in the form of some high temp paint wouldn't hurt though.
Like I said, car sounds great. Good choice of setup.
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I have a mufflex system on my 89 that I think I am going to throw on my Firehawk. I have a Flowmaster single in/out muff. I am going to go with the 4in magnaflow muffler. There's a thread on here that several people changed to magnaflow muffler and picked up 20+hp just from the muffler.
Thread Starter
TECH Addict
Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
if you clicked on the video link and look at the description it tells you:
799 heads
ls6 intake
prof products 85mm tb
30lb SVO injectors
TSP 224r cam(224/224, .581/.581) 114lsa
comp magnum 5/16 x 7.400 pushrods
patriot gold dual valve springs
mufflex 4" cat back with 3.5" stainless tails
TSP o/r y-pipe with flowmaster 4" merge
pacesetter ceramic coated LT's
slp lid, holley power shot filter
hurst billet pro shifter
melling high volume oil pump
n-motion LS2 single roller timing set
i'm going to eventually do a cut out. so that will give me what i want for the track.
799 heads
ls6 intake
prof products 85mm tb
30lb SVO injectors
TSP 224r cam(224/224, .581/.581) 114lsa
comp magnum 5/16 x 7.400 pushrods
patriot gold dual valve springs
mufflex 4" cat back with 3.5" stainless tails
TSP o/r y-pipe with flowmaster 4" merge
pacesetter ceramic coated LT's
slp lid, holley power shot filter
hurst billet pro shifter
melling high volume oil pump
n-motion LS2 single roller timing set
I have a mufflex system on my 89 that I think I am going to throw on my Firehawk. I have a Flowmaster single in/out muff. I am going to go with the 4in magnaflow muffler. There's a thread on here that several people changed to magnaflow muffler and picked up 20+hp just from the muffler.
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Joined: Jan 2002
Posts: 2,950
Likes: 0
From: Magee MS
I'm gunna throw the mufflex under my little car, But I plan on slipping 2 4" bullets inline of the I-pipe to quieten down this solid roller camshaft, and gunna put 2 3.5" electric cut-outs on my headers and run 3.5" oval piping slash cut right under the doors. I know its going to be a bunch of stuff to look @ but I want the car to be quiet when capped up and when I uncapp it I want the flow I need to let the motor breathe
Not to sound like an ***, and I'm only curious, but your numbers seem a little low for a h/c setup (But still a nice 20/20 hp/tq gain! 
.) Any idea why? We have nearly identical mods except for the c/b, TB and heads. I'm on an LS6 top end with a 78mm TB and TSP Rumbler CB, 224/228 cam and running 414/372 RW on a lean tune. I KNOW it can push more, just don't have the PAY to PLAY right now.
What are the 799 heads? I'm a bit outdated on my RPO's and casting #'s right now.
.) Any idea why? We have nearly identical mods except for the c/b, TB and heads. I'm on an LS6 top end with a 78mm TB and TSP Rumbler CB, 224/228 cam and running 414/372 RW on a lean tune. I KNOW it can push more, just don't have the PAY to PLAY right now.What are the 799 heads? I'm a bit outdated on my RPO's and casting #'s right now.
i had an issue with the valve seals and guides, got it fixed though.
here's the result of a couple pushed up valve seals. smokin like a damn chimney.
http://www.youtube.com/watch?v=vT7xBllQMe4
only blows a tiny bit of smoke now, but thats normal. i'll try to get some more vids up soon.
edit: still need to get around to painting the muffler.
here's the result of a couple pushed up valve seals. smokin like a damn chimney.
http://www.youtube.com/watch?v=vT7xBllQMe4
only blows a tiny bit of smoke now, but thats normal. i'll try to get some more vids up soon.
edit: still need to get around to painting the muffler.
that's awsome man. i was debating between that exact set-up and the one i went with which is a flowmaster merge into a 4'' cut-out, then into a stock style cat-back. just a suggestion, mine's got clamps on the headers and then it's welded all the way until it starts to go over the axle, then there's a band clamp, and then it's all welded from there to the tips. makes it much easier to remove your complete exhaust from under the car when you need to work on things being only 2 pieces. no messing with a bunch of pieces clamped together.