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73-87 Chevy _ GMC Trucks => Performance => Exhaust => Topic started by: Thermal Izod on September 07, 2008, 07:41:43 AM

Title: headers and true duals?
Post by: Thermal Izod on September 07, 2008, 07:41:43 AM
i have an 82 k10 w/ a 305.  anyone know the cheapest way to buy a kit to do full headers, x pipe, mufflers?  dont care if it goes over the axel or not...
Title: Re: headers and true duals?
Post by: TexasRed on September 07, 2008, 12:53:42 PM
Do you have emissions? The cheapest kit would be the one sold on here which is the x pipe, and mufflers, and then to buy long tube headers from a place like summit.
Title: Re: headers and true duals?
Post by: bigblue09 on September 07, 2008, 02:53:20 PM
yea. summit has a kit for it.its everything but the cats which you dont need if you have to do emissions.
Title: Re: headers and true duals?
Post by: Thermal Izod on September 07, 2008, 03:17:26 PM
nope, just an annual headlight etc checkup....wasn't sure the kit would work, as its listed for 2wd....
Title: Re: headers and true duals?
Post by: TexasRed on September 07, 2008, 04:47:23 PM
oops, I didn't see the 4x2 part on the description. Scratch my idea then  :-\
Title: Re: headers and true duals?
Post by: Thermal Izod on September 07, 2008, 06:40:04 PM
yea, so I dunno if it'll work on a 4x4...and i'm not into the summit kit i saw, it didn't have a cross over pipe, it was 2 straight pipes out the sides...Not into the farm truck sound...I'm trying to aviod having to fabricate up a universal x-pipe kit, plus i'd prefer  go over the axel... i did that before and it's a pain in the :(...
Title: Re: headers and true duals?
Post by: VileZambonie on September 07, 2008, 07:29:50 PM
Your best bet is to go to an exhaust shop and do a cash deal.
Title: Re: headers and true duals?
Post by: Thermal Izod on September 07, 2008, 08:26:25 PM
i hear ya, but its not so easy here.....i live in a military town....all the shops are shy-sters....
Title: Re: headers and true duals?
Post by: TexasRed on September 07, 2008, 09:24:13 PM
Would that be Warner Robins? Oooops, did I say that? Some people may not appreciate the comment about military towns until they've experienced it.
Title: Re: headers and true duals?
Post by: bigblue09 on September 07, 2008, 11:40:42 PM
i live near waner robbins.
Title: Re: headers and true duals?
Post by: Thermal Izod on September 08, 2008, 10:55:41 AM
jacksonville, nc actually....(camp Lejeune/MCAS New River)
Title: Re: headers and true duals?
Post by: Captkaos on September 08, 2008, 11:56:21 AM
The X pipe we sell is for 4x2 Only.  I would take it to a shop and have them do it.  Shouldn't be much over $250 or so...
Title: Re: headers and true duals?
Post by: bigblue09 on September 08, 2008, 12:31:25 PM
i live in georgia and i went to a shop and asked them about it. if i bought the headers and got them to put them on and 2 cats 2 mufflers tubing and installation was like $700. its crazy.
Title: Re: headers and true duals?
Post by: Thermal Izod on September 08, 2008, 12:40:19 PM
Capt, any plans for the store to start selling a 4x4 compatible true dual system?
Title: Re: headers and true duals?
Post by: Captkaos on September 08, 2008, 03:11:08 PM
I have asked the company that makes the one we have and they weren't interested.  Dynomax supposedly makes a dual setup for these, or so I have heard.
Title: Re: headers and true duals?
Post by: Thermal Izod on September 08, 2008, 04:25:42 PM
i'll look into that.....last time i was at a local shop here i wanted a 3" turn down tip bent and cut from straight pipe, and they wanted $30 each....its a $4 part at auyozone, lol...
Title: Re: headers and true duals?
Post by: bigblue09 on September 08, 2008, 08:04:38 PM
who makes the ones we have on here?
Title: Re: headers and true duals?
Post by: Captkaos on September 08, 2008, 09:15:04 PM
Pypes Exhaust.
Title: Re: headers and true duals?
Post by: Thermal Izod on September 11, 2008, 03:08:29 AM
I'm thinking that sometime in the near future I'll do full length headers, a custom 2/5" X-pipe kit, and turn it out the sides befor ethe rear wheels....Question now is, what kind of mufflers do I need to tone down that kind of aggressive exhaust?  I don't mind some growl, esp when you get into the throttle, but I def DO NOT want another vehicle that wakes up my kids, and neighborhood, when I leave in the morning.  So I'd need a pair of cost effective, quiet mufflers to bring headers, no cats, and an x-pipe into more of a "catback" kinda range...Any suggestions?  I'm not really a muffler guy, and my f-body has a NASCAR style header-xpipe-out the sides 3" setup that rocks the whole county when I start it up...
Title: Re: headers and true duals?
Post by: bigblue09 on September 11, 2008, 02:30:41 PM
haha i want everyone to know when im leaving my neighborhood  ;D
Title: Re: headers and true duals?
Post by: Thermal Izod on September 11, 2008, 03:03:09 PM
I hear ya, I thought it was funny too...I never have a problem w/ a "noise competition" with neighbor's music or atv's or anything (they know they will lose), but it does wake my son up at 5am from time to time, and I hate that...  I'm trying to aviod that level of obnoxiousness this time around...No need for it to sound like bill elliot leaving for work that early anymore...It was fun for a time though ;-)  That said, Dynomax Super Turbo's?  are they one of the more quiet ones out that?  I've used Flowmaster deltaflow 50 series on a v6, and it was barely louder than stock, but I'm a little tired of the generic flowmaster sound...
Title: Re: headers and true duals?
Post by: bigblue09 on September 11, 2008, 09:31:13 PM
haha. srew my neighbors, none of them like me anyways.  ;D lol. but i have read about the dynomax turbos. they are supposed to be high performance quiet mufflers from what i have read.
Title: Re: headers and true duals?
Post by: JJSZABO on September 12, 2008, 08:14:50 AM
Your best bet is to go to an exhaust shop and do a cash deal.

I second this opinion...this is what I did.  Long tube headers that I reused (3" collectors) into 3 inch high flow cats (I bought off of ebay) into flowmasters super 40's 3inch intake and outlet to 3 inch tail pipes.  True dual 3 inch all the way and this thing is LOUD.  All for around 300 dollars. :D
Title: Re: headers and true duals?
Post by: Dragon on September 12, 2008, 01:47:10 PM
haha i want everyone to know when im leaving my neighborhood  ;D
Well if that's the case ;D
http://www.spintechmufflers.com/spintech/spintechindex.asp
Them some SeriouslyEVIL sounding muffs(Check out their Video Sound Clip section) ;)  Some buddies of mine absolutely Love them, and usually go for their Pro-Streets/Sportsmans....  Trust me when I say that I wouldn't run them without good Weatherstriping, and Plenty of Dyno-Mat Style Sound Deadener :o :o :o  After while the Drown can get ridiculous on long trips :-X  NASCUR(<Not wanting to pay any Royalties ;D) ain't got nothing on SpinTechs
Title: Re: headers and true duals?
Post by: Thermal Izod on September 12, 2008, 02:31:52 PM
i was actually looking for a QUIETER muffler for a true dual....
Title: Re: headers and true duals?
Post by: Captkaos on September 12, 2008, 11:25:48 PM
Dynomax are quiet at idle.
Title: Re: headers and true duals?
Post by: Skunksmash on September 15, 2008, 02:52:01 AM
Do you have emissions? The cheapest kit would be the one sold on here which is the x pipe, and mufflers, and then to buy long tube headers from a place like summit.

I have emissions, but i would consider doing it all myself so i could ditch the cats anyway if i knew how hard it was. Anyone know how hard it is to install a set of long tubes, and install the x pipe in a home garage?
Title: Re: headers and true duals?
Post by: JJSZABO on September 15, 2008, 07:25:40 AM
Why ditch the Cats?  You can get some decent flowing Cats and hold polution to a minimum.  I can understand if this is for the strip or track - but for a daily driver I would still use cats...
Title: Re: headers and true duals?
Post by: Skunksmash on September 16, 2008, 03:04:38 AM
Well i assume that cats restrict exhaust flow, at least a little bit.
Title: Re: headers and true duals?
Post by: Dragon on September 16, 2008, 02:10:11 PM
Well i assume that cats restrict exhaust flow, at least a little bit.

Pre-'94 factory cats were restrictive, but '94 and later really weren't  all that bad, unless they were starting to or were clog(60-100,000 miles)... 

With that said, you can get High-Flow aftermarkets that offer little to no restrictions, even at an affordable cost when you go with a Universal(most of which you can get for $50-100 each, if you shop around)...
Title: Re: headers and true duals?
Post by: 86 chevy silverado on September 16, 2008, 08:06:11 PM
If you are supposed to have cats then I agree with Dragon on the universal cats, they are small and free flow. Put a universal H pipe http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D642025&N=700+4294921571+115&autoview=sku You cant use an X pipe on 4x4, transfercase is in the way. I used the kit from this site, minus the x pipe. I personally love the pypes exhaust and agree that EVERYONE has flowmaster. Pypes mufflers are fair priced (approx $75ea) compared to most out there and sound great with a built motor. http://www.pypesexhaust.com/sounds-gm-abody.html (I hope its ok to post these links) I'm going to use the violater mufflers with X pipe on my chevelle. From the headers to the cats you can piece together with pre bent pieces also from summit. I used 2 of these;http://store.summitracing.com/egnsearch.asp?Ntt=hed+18806&searchinresults=false&Ntk=KeywordSearch&DDS=1&N=700+115 on the passenger side to go around the transfer case and a straight one on the drivers side. Its a little time to piece it together, some measuring and cutting and these clamps; http://store.summitracing.com/egnsearch.asp?Ntt=wlk-33240&searchinresults=false&Ntk=KeywordSearch&DDS=1&N=700+115&x=29&y=7  help hold it together to mock up or if you dont want to weld.
Title: Re: headers and true duals?
Post by: Captkaos on September 17, 2008, 03:19:31 PM
We carry everything Pypes sells and they hi-flow cats are about $70 apiece I think, their mufflers are $50 for the pair if you get the kit from us.  They are also stainless.  If you are looking for a 4x4, it won't work.

I would check those band clamps for slipping, we put a STS turbo on a F-body and he pieced his exhaust together with that stuff and didn't want us to flange it (didn't want to spend the money).  He blew the exhaust off on the way home and then said all the power from the turbo was gone and we didn't know what we were doing.  Had to remind him that the turbo is connected to the exhaust and without it, you don't have a turbo..
Title: Re: headers and true duals?
Post by: 86 chevy silverado on September 17, 2008, 03:59:05 PM
I used your exhaust kit on my K30 minus the x pipe, and it was the best price I could find. You can make it happen on a 4x4.
Title: Re: headers and true duals?
Post by: Captkaos on September 17, 2008, 04:43:20 PM
It can be made to work, but the X can't.
Nice work BTW....
Title: Re: headers and true duals?
Post by: Skunksmash on September 17, 2008, 06:43:09 PM
Well i assume that cats restrict exhaust flow, at least a little bit.
With that said, you can get High-Flow aftermarkets that offer little to no restrictions, even at an affordable cost when you go with a Universal(most of which you can get for $50-100 each, if you shop around)...

But do those filter enough to make the vehicle pass it's emissions test?
Title: Re: headers and true duals?
Post by: bigblue09 on September 17, 2008, 09:19:18 PM
yea why wouldnt they? that would defeat the whole purpose of having them.
Title: Re: headers and true duals?
Post by: Skunksmash on September 18, 2008, 05:19:19 AM
I dont know. I was tired when i asked that. But i guess maybe some state's emissions are less strict than others? Probly not though.
Title: Re: headers and true duals?
Post by: ME83silverado on March 03, 2009, 09:29:50 PM
Thats insane all those exhaust shops are that expensive. I been around pricing getting new pipes put on my truck. Header installation and new true dual 3 inch pipeing exiting where ever you choose and tips runs about $250-$300 at most shops here. Theres a guy that runs a special, 2.5 inch tru duals from manifolds coming out where ever you want, $125.
Title: Re: headers and true duals?
Post by: 75??? franken-trunk on March 23, 2009, 12:48:37 AM
dynomax kits are nice and easy to put in, and cheap.... but i had to mod mine for hooker headers but it works great... i also cut out the last tail pipe bend for rear exits... it needs mufflers and the gaugeing is a little light so it tings a little but i like it lots!!!!!!!!!!!!!!!!!!!!!!!!
Title: Re: headers and true duals?
Post by: Laderhosen on March 29, 2009, 11:29:18 AM
What's the benefit of an X pipe? Does it just make a smoother engine note??

I've got some long tube headers sitting in my garage waiting to go on, but not sure what system to go for. Anybody had any experience with Magna Flow systems?
Title: Re: headers and true duals?
Post by: VileZambonie on March 29, 2009, 03:39:48 PM
Thats insane all those exhaust shops are that expensive. I been around pricing getting new pipes put on my truck. Header installation and new true dual 3 inch pipeing exiting where ever you choose and tips runs about $250-$300 at most shops here. Theres a guy that runs a special, 2.5 inch tru duals from manifolds coming out where ever you want, $125.

Is his labor rate $5 bucks an hour? Most shops are at least $65/hr and let's just say 4 hours labor right there that's $260 in labor without materials and tax. Around here Most garages are around $90/hour. Where do you live?

X-pipes help balance the exhaust backpressure and equalize flow with less restriction than an H-pipe. There's nothing wrong with an H-pipe either as they aren't as obstructive and are a little easier to work around.
Title: Re: headers and true duals?
Post by: Laderhosen on March 29, 2009, 10:42:38 PM
Thats insane all those exhaust shops are that expensive. I been around pricing getting new pipes put on my truck. Header installation and new true dual 3 inch pipeing exiting where ever you choose and tips runs about $250-$300 at most shops here. Theres a guy that runs a special, 2.5 inch tru duals from manifolds coming out where ever you want, $125.

Is his labor rate $5 bucks an hour? Most shops are at least $65/hr and let's just say 4 hours labor right there that's $260 in labor without materials and tax. Around here Most garages are around $90/hour. Where do you live?

X-pipes help balance the exhaust backpressure and equalize flow with less restriction than an H-pipe. There's nothing wrong with an H-pipe either as they aren't as obstructive and are a little easier to work around.

Where should crossover pipe should go in an H pipe? Immediately at the bottom of the headers or further down the chassis towards the rear?
Title: Re: headers and true duals?
Post by: Cowman85 on March 31, 2009, 05:48:58 PM
A mechanic once told me that a single all the way it is the best way to go instead of true duals, which would you pick?
Title: Re: headers and true duals?
Post by: VileZambonie on March 31, 2009, 06:04:43 PM
Duals. You can see my H pipe in this thread http://forum.73-87chevytrucks.com/smforum/index.php?topic=7334.0
Title: Re: headers and true duals?
Post by: Captkaos on March 31, 2009, 06:12:54 PM
On a stock system, a single would be fine.

You should actually put the the Crossover at the point where the pipes are the hottest, but this isn't always possible.  
One way to determine it is paint the pipe drive it and where it is burnt put it there.
Title: Re: headers and true duals?
Post by: 79K20 on April 01, 2009, 11:11:04 AM
Um... isn't the heat a function of how far away they are from the engine?

i.e. Wouldn't they be "hottest" at the manifold? By that logic, the crossover should be directly beneath the manifolds, under the tranny.
Title: Re: headers and true duals?
Post by: Captkaos on April 01, 2009, 01:47:36 PM
I would assume that since topic is about duals it would be obvious that we were talking about where the pipes were the hottest...

You have 4 cylinders firing and pushing each other out the exhaust.  Where it gets the hottest is where they all converge.
Title: Re: headers and true duals?
Post by: 86 chevy silverado on April 01, 2009, 03:59:27 PM
You want your X-pipe or H-pipe which ever applies after your collectors where ever you have enough room. My H-pipe is under the tailshaft of my tranny. If your truck is also a 4wd that would be the best spot for you.
Title: Re: headers and true duals?
Post by: Laderhosen on April 04, 2009, 01:46:34 PM
Anyone got any underside views of systems on 2wd trucks??

What sort of silencers are people using?