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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> Y-pipe w/ catback styl exh, or duals with round tube mufflers, what do you think
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Topic Review (Newest First)
05-14-2009 07:06 PM
my87Z cool beans, did you check out that video that boogie posted, that's a pretty sweet set up, but im sure it cost 600 buck to get it all done to (with out headers)
05-14-2009 06:52 PM
F-BIRD'88 Mine looks like this. 2.5" duals.
05-13-2009 07:27 PM
oldbogie
Quote:
Originally Posted by my87Z
NEVER!!

im not that old but i have never owned anything but V8's
1984 Blazer 350
1972 nova 350
1987 camaro 305
2002 gmc 3/4THD 4x4 364

the only way i will ever own an electric car is if they do away with gasoline motors all together, and even then i will still have atleast one gasoline V8 powered vehicle (atleast 1!) but my wife may drive some new what ever
I hear ya, my wife drives a PRIUS, that thing will eventually get a pedestrian. She complains all the time about people that step off right in front of it. It doesn't make any noise what do ya want! I was working in the shop one day when she was out. I turned around and took a step out the door and damn there it was behind me, I flopped onto the hood like a goose goin' thru an A320's engines.

My daily driver is a 350 powered S-15, a wolf in sheeps clothing. The 350 is a Franken-mouse built using a Vortec block and extremely modifed LT1 aluminum heads that are converted back to conventional coolant flow. There's a ton of other mods to get a conventional distributor and a hacked up TPI injection system running off an old batch fire computer, and fastened to a GMPP LT1 4 barrel conversion intake, . Uses an LT4 HOT cam and Miller roller rockers. And it SMOGs, which it has to where I live, but it ain't technically legal, but so far the state hasn't bugged me about the configuration. They sniff it and send me away happy.

I have this noise thing even between my Harley and my Yamaha. Starting the old Hog is like bringing life to a wild animal. Begins with the electric starter which usually doesn't last enough to light it off so that ends with the kick starter and some sweat. The Yamaha in spite of having some healthy pipes on it, is like starting the vacuum cleaner. Pull a little choke, turn the key, hit the start button, a quick humm from the starter and it's going. Nice bike but no soul.

All right I'm outta here.

Bogie
05-13-2009 07:05 PM
my87Z
Quote:
Originally Posted by oldbogie
Just think your neighbor down the street in the big white house wants you and me to trade that sound for an electric motor.


Bogie
NEVER!!

im not that old but i have never owned anything but V8's
1984 Blazer 350
1972 nova 350
1987 camaro 305
2002 gmc 3/4THD 4x4 364

the only way i will ever own an electric car is if they do away with gasoline motors all together, and even then i will still have atleast one gasoline V8 powered vehicle (atleast 1!) but my wife may drive some new what ever
05-13-2009 06:55 PM
oldbogie
Quote:
Originally Posted by my87Z
that's awsome, they are tucked pretty well, you can tell it is tight, and i would need a good low-pro box-or oval mufflers like that, i like it!
Just think your neighbor down the street in the big white house wants you and me to trade that sound for an electric motor.


Bogie
05-13-2009 06:46 PM
my87Z that's awsome, they are tucked pretty well, you can tell it is tight, and i would need a good low-pro box-or oval mufflers like that, i like it!
05-13-2009 06:11 PM
oldbogie
Quote:
Originally Posted by my87Z
the problem with running it all the way back is its a 87 camaro, and they are not made to run duals what so ever, many people who have upgraded there motors and such have still had to go with a Y-pipe because of the lack of room under the car, i would love to be able to get the exhaust to come out right before the back tires but not sure if i can work that out, these cars have extremely clearence under the car and then as it being the F-bodies they dont have an exposed under carraige to be able to tuck things into, i have been told that one guy ran 2.5 duals in the stock y-pipe/single pipe location, and then found a way to get them past the rear and into 2 seperate sideways mufflers then out the back, im not sure though (i want to say this was FBIRD88 but not sure)
This isn't as big a deal as it appears. Lookie here http://videos.streetfire.net/video/T...-an_209929.htm

Bogie
05-13-2009 05:58 PM
my87Z i dont really care about qualifing for smog, i live in MD, you only have one state inspection for as long as you own the car, and i have owned the car for about 8yrs, it was tagged for 6, i have had it in my gargae for about 2yrs now only taking it out from time to time to get the fluids going and to keep the car from rotting, i should be able to get the car re-tagged once done with no inspection, i cant remember how old the car need to be for historic tags or hotrod tag, 20-25yrs not sure which one for maryland
05-13-2009 05:53 PM
my87Z the problem with running it all the way back is its a 87 camaro, and they are not made to run duals what so ever, many people who have upgraded there motors and such have still had to go with a Y-pipe because of the lack of room under the car, i would love to be able to get the exhaust to come out right before the back tires but not sure if i can work that out, these cars have extremely clearence under the car and then as it being the F-bodies they dont have an exposed under carraige to be able to tuck things into, i have been told that one guy ran 2.5 duals in the stock y-pipe/single pipe location, and then found a way to get them past the rear and into 2 seperate sideways mufflers then out the back, im not sure though (i want to say this was FBIRD88 but not sure)
05-13-2009 05:42 PM
oldbogie
Quote:
Originally Posted by my87Z
i have a 87 camaro that has the typical y-pipe and cat-back exhaust and that is fine for the wimpy 305 4brl in it now but i have a 385ci that i will be putting in it sooner than later, ive heard some say a Y-pipe into a 3"cat back system (without the cat), but i just can t see running this, a Y-PIPE i just cant do it, and most all shops in my area wont mess with a custom (illegal) exhaust, even if paid to with no paper work, so i know i want long tube headers, and round mufflers, here is what i have come up with so far

http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

in a nut shell headman elite long tube headers w/3" collector, 12" collector extensions, 3"- 2.5" reducer, 12x4" moroso 2.5 in/out round tube mufflers, and then just a set of turndowns

what do you think of this exhaust system
Do you have to qualify for smog any more?

If not, true duals, as you propose, would be the way to go with or without cats. Add a crossover pipe, it lets each side share the other, that is really helpful for flow. Doesn't so much matter whether an H or X pipe, just that it's there.

Be careful of ending the pipes anywhere besides under and slightly behind the rear bumper. There is a low pressure area that is always behind the forward moving car, it gets bigger with more speed and smaller with less. It is useful to use as a scavenge technique as it puts the tail pipes under a bit of suction. Dumping anyplace else requires knowing the airflow in that area, it's possible with side or under dumps to actually have a local air flow trying to pressurize the end of the pipes restricting their flow instead of helping it.

Bogie
05-13-2009 03:59 PM
my87Z
Y-pipe w/ catback styl exh, or duals with round tube mufflers, what do you think

i have a 87 camaro that has the typical y-pipe and cat-back exhaust and that is fine for the wimpy 305 4brl in it now but i have a 385ci that i will be putting in it sooner than later, ive heard some say a Y-pipe into a 3"cat back system (without the cat), but i just can t see running this, a Y-PIPE i just cant do it, and most all shops in my area wont mess with a custom (illegal) exhaust, even if paid to with no paper work, so i know i want long tube headers, and round mufflers, here is what i have come up with so far

http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

in a nut shell headman elite long tube headers w/3" collector, 12" collector extensions, 3"- 2.5" reducer, 12x4" moroso 2.5 in/out round tube mufflers, and then just a set of turndowns

what do you think of this exhaust system

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