my 2 cents. . .

i went with glass paks.
i got a 40" unit hanging in front of the rear axle and a 12" unit beside the gas tank. it sounds only slitely louder than a stock muff, yet i have a staight pipe all the way out.
since i have a long body van, i have lotsa room under there. i'd suggest the longest pak for the space u have to work with and a resonator out back b4 the end of the tail pipe.
mine is awesome!



D~~~!

how about these mufflers.

http://www.spintechmufflers.com/spintec ... hindex.asp

Brennan,

If your exhaust shop can't do a 3" tail pipe or a nice 2.5" one then order it from TTi. They sell individual components and they do fit.

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Joshua

I have 2 mufflers that look like glass packs from the outside. They are baffled like turbo mufflers inside.

Superior brand mufflers from a local shop.

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

I have all of the components for the exhaust system. I had the headers coated as just eye balling them and the car is looks as though they will fit. The collectors are 2" and will be expanded to 2.25 at the shop. The J-pipe is just in case the 50 series muffler is a little long and we need a tight turn up and out of the muffler. Ofcourse the pipe would be cut somewhere in the 180* turn for proper fitment.

http://tinyurl.com/2n7qbm (All exhaust stuff)
http://tinyurl.com/3dctp9 (closeup of the coated headers)

Its my understanding that the flowmaster Y-pipe is going in 2"-6" behind the trans crossmember. I want to get this right, so where do I measure from. I would guess the the Y-pipe's center would be measured from the point that the two 2.25" pipes meet in the Y-pipe and the trans crossmember's center line.
Correct? Can someone be more specific in regards to 2"-6" or is this not that important?

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

The longer length that you can go and still fit everything in, the more torque you will have at low rpms. Most folks up here that run these components "Y" them together too soon and the low end suffers.

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

Measure as you described, Bren, and use 4". It is not that critical, but best not to be off by 6"...

Lou

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Home of Slant6-powered fun machines since 1988

I agree with Lou.

Primary length between 30"and 36"......

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Yeah....Im the one who destroyed this rare, vintage automobile.....

http://tinyurl.com/2yjz7c headers installed front view
http://tinyurl.com/2h25kd Rear view
http://tinyurl.com/2avlo3 Top view
http://tinyurl.com/2a9pzr AC clearance view

The headers are installed. This was something I should have done from the start. They look great. Also use the Remflex gasket. We'll see how it holds.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Well how does it perform? I just read this whole topic and am very curious to see how headers helped out as I am going to be in the same boat you are in sometime soon.

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Stephan Nelle

Looks good dude. Dont get all excited when you first put it all back together, I feel sure some tuning will be needed. It may not even want to idle from needing more fuel.



Just wanding about one of the pics in that spread. Is down in the intake black with soot? It might just be the pic but it looks like its black down in the plenium. If it is black, does the carb show signs of this in the primary bores?


Jess

Looks great. Finishing that out with a nice exh system should get you some solid gains. I agree some carb and ign retuning may be needed.

Lou

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Home of Slant6-powered fun machines since 1988

The exhaust system is done. Didn't have time to run it much but its pretty loud outside the car. Its surprisingly quiet inside though. The idle is much more lopy. I still need to plug in the O2 sensor and see what the mixture looks like.
http://tinyurl.com/ywxaks Overall view
http://tinyurl.com/2gbv4r Y-Pipe view
http://tinyurl.com/279skp underhood view
http://tinyurl.com/yraabx Tip view
http://tinyurl.com/24n55k Head pipe/ O2 port view

One bonus that I wasn't expecting. At idle you can hear header ping. It sound bad a**
I plan to upload a YouTube video sound track of its sound.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Very nice install!

Thanks for sharing!

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

that does look really clean... one Q though why is that "spring" attatched to the brake holding that cable? i assume battery cable based on the color of the cable's.

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1976 Plymouth Feather Duster
2002 Dodge Dakota 4.7l v8