Author Topic: Your favorite muffler performance wise.  (Read 22452 times)

Offline eventhorizon66

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Re: Your favorite muffler performance wise.
« Reply #15 on: April 25, 2009, 07:20:13 PM »
Chris is Captkaos - the owner of this site.
'85 C10 SWB 350 700R4 TKO600

Offline VileZambonie

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Re: Your favorite muffler performance wise.
« Reply #16 on: April 25, 2009, 08:18:00 PM »
Sorry about that. Like he said cptkaos
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Offline exilous

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Re: Your favorite muffler performance wise.
« Reply #17 on: April 26, 2009, 08:26:06 PM »
Ahhh ok very cool.

Offline Captkaos

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Re: Your favorite muffler performance wise.
« Reply #18 on: April 27, 2009, 04:13:56 PM »
I wouldn't say Loved them, but the headers were nice pieces.  I did have issues with the crossover pipe on my 4x2, but I finally got it resolved.  I still sell them, but they are not cheap.

Offline exilous

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Re: Your favorite muffler performance wise.
« Reply #19 on: April 27, 2009, 08:16:46 PM »
I know they arent cheap I found a couple sites that offered them varying in price range from 625-825 for pretty much the same exact set. Either way I won't be doing any crossovers my friend has an exhaust bender and I will be doin true duels. Still debating whether or not to do the smoke stacks through the headboard of the dump body. it would definetly look cool. I'd have to do a few measurements to make sure it doesnt burn up my tarp. that would be bad.

Offline 78 Chevyrado

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Re: Your favorite muffler performance wise.
« Reply #20 on: April 27, 2009, 09:31:46 PM »
For performance?  I pick this one
Kenny

1978 C-20, 350/400, 3.73, Graystone Metallic, Raceline Renegade 8 Wheels - 18x8.5, 275/70R18 BFG KO's

Offline Captkaos

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Re: Your favorite muffler performance wise.
« Reply #21 on: April 28, 2009, 10:56:53 AM »
If you know the Part number of the headers I can look at my cost for them.

Offline eventhorizon66

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Re: Your favorite muffler performance wise.
« Reply #22 on: April 28, 2009, 11:34:17 AM »
Mine are the 300Y-C, which are designed for straight dual exhaust.  They fit great.
'85 C10 SWB 350 700R4 TKO600

Offline Laderhosen

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Re: Your favorite muffler performance wise.
« Reply #23 on: April 28, 2009, 02:56:24 PM »
I run Flowtech-style headers on mine with dual 2.25" exhaust, H pipe and Dynomax Ultraflos exiting to 3x18" Magnaflow slash-cut tips that are at a 45 or so behind my rear tire. After I did the cam and head upgrade, my exhaust got a fair bit louder. The Ultraflos are nice and give a pretty classic performance muffler sound. They don't drone as much as a Flowmaster I had on a different truck years ago and really 'snap and rap' when accelerating hard above 3500 rpm. I want to try Hooker Aerochambers though if and when I eventually upgrade to a full 2.5" dual exhaust.

How do you find those headers? I've got a set in my garage waiting to go on did they make a big difference to the sound...? I'm going to be running a dual system with an H pipe also, but 2.5 inch up to the muffler then 2 1/4 after.
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Offline SUX2BU99

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Re: Your favorite muffler performance wise.
« Reply #24 on: April 30, 2009, 11:59:20 AM »
I find them fine but I don't really have anything else to compare to since I bought them with the truck. They seem to fit fine and are holding up well. They don't leak, even after being removed and reinstalled when the cam and heads were done. I don't know for sure if they are Flowtechs though. They just look like a pic that was posted that were Flowtechs.
85 Chevy Silverado C10 short, wide, yellow, 2wd. Lowered, 60-over 350 with Dart Iron Eagle heads and Comp Cams XE268 cam, TH350 w/ shift kit, 3.40 Gov-lok 12 bolt.

Offline exilous

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Re: Your favorite muffler performance wise.
« Reply #25 on: April 30, 2009, 04:58:24 PM »
Capt I dont have a clue which ones I would use... something that fits. I have a pic up of the engine and trans on the frame where i have been posting my project i odn't know whether long tubes or short tubes would fit and what would the benefit be to either length?

Offline exilous

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Re: Your favorite muffler performance wise.
« Reply #26 on: May 03, 2009, 09:34:27 PM »
Ok i did some research and found a set of doug thorley tri-ys on jegs. the number is #776-D310 here is the link.
http://www.jegs.com/i/Doug%27s+Headers/776/D310/10002/-1

Offline eventhorizon66

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Re: Your favorite muffler performance wise.
« Reply #27 on: May 03, 2009, 10:04:19 PM »
Dougs headers aren't the same as Doug Thorley.  Those are full length just like my doug thorleys, the primary tube routing is different; also the collectors on mine are 2.5".  Nothing wrong with them, I just thought you should know that those aren't doug thorleys.

http://www.pertronix.com/prod/ex/dougs/default.aspx

http://www.dougthorleyheaders.com/
« Last Edit: May 03, 2009, 10:06:30 PM by eventhorizon66 »
'85 C10 SWB 350 700R4 TKO600

Offline exilous

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Re: Your favorite muffler performance wise.
« Reply #28 on: May 03, 2009, 10:14:33 PM »
Oh I didnt know there was a difference...thanks for letting me know. But is there a difference between the two? Like I would assume that doug thorley headers would be the big company and dougs would just be a cheaper version of the real doug thorley headers? Or am i assuming wrong?

Ok then these would be the ones I would assume I need from the doug thorley site. # THY-367Y-C
http://www.dougthorleyheaders.com/products/searchType/vehicleSearch/year/1985/make/CHEVY%20_SLASH_%20GMC/model/TRUCK/sfID1/9/sfID2/40/sfID3/33/productID/789


Offline eventhorizon66

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Re: Your favorite muffler performance wise.
« Reply #29 on: May 03, 2009, 10:29:42 PM »
The TH-367Y is a mid-length design with a y-pipe.  Chris is using a set of these on his Jimmy project as it will have a single exhaust and he had some issues with the fit.  The doug thorley equivalent to the Doug's 310 you posted earlier would be these: http://store.summitracing.com/partdetail.asp?autofilter=1&part=DTE%2D300Y%2DC&N=700+115&autoview=sku

They are what I am running and they fit great.  As far as the comparison in quality, I don't know if one is better than the other.
'85 C10 SWB 350 700R4 TKO600