MattODoom

iTrader: (1)

I have another one of those sandwich oil coolers & the steel lines laying outside actually... waiting for my next motor!

Jeremy_84_F41

iTrader: (3)

SLP 1.75" shorties into 2.5" pipes, into a 3.5" y-pipe. The intermediate pipe is 3.5" and is flanged so that I can swap from my race muffler (Borla XR1) to my street muffler (SLP TOTL, with 3.5" flange welded on). Currently it has the Borla and single 3.5" driver's side tailpipe.

Here you can see my test pipes with 2-bolt flanges for ground clearance..

Jeremy_84_F41

iTrader: (3)

A shot from underneath..

Jeremy_84_F41

iTrader: (3)

And a rear shot. I welded all of this together with a Hobart MIG welder and tubing/bends from Hooker and Hedman. The y-pipe is from Flowmaster. Everything is mandrel bent and leak free, as well as modular (The tailpipe is flanged, the muffler is flanged, the overaxle pipe is flanged). If I need to drop the tank for example, the exhaust can be completely unbolted in five minutes.

spills

iTrader: (9)

I like that 2nd pic of the y-pipe. You got any cound clips of the system with the borla? Id like to hear how it sounds.

3.5"? Damn dude, you must have a pretty stout motor. How bout some specs?

Jeremy_84_F41

iTrader: (3)

Thanks. I don't have any sound clips yet. If I make any I will post them so you can hear.

As for specs, it has Trick Flow heads, a HSR, BBK 58mm TB, a fairly mild roller cam, forged bottom end, a Procharger with custom hard inlet pipe and two core intercooler, 42lb/hr SVO injectors, a 730 ECM with $58 code, etc. And a T56, Moser 12-bolt, and Fikse FM10 wheels.

LilJayV10

iTrader: (5)

Jeremy, thats exactly what I want to do. How is ground clearance?

Jeremy_84_F41

iTrader: (3)

Well, the car is lowered 2" or so, which doesn't help. Part of the reason I built my own exhaust was so that I could tuck it up against the underbody as much as possible. The transmission crossmember is lower than the exhaust so that scrapes first. The next lowest part is the exhaust crossover that goes below the oil pan. Before this setup I had a 3.5" bullet dumped before the rear axle, and it was just impossible to keep it from dragging. It also resonated pretty badly.

LilJayV10

iTrader: (5)

Again thats what I am planning on doing. I have a 406 and had true duals on it but wanted to lower the car. Traction will be the next issue.

f355bird

iTrader: (2)

Here is mine hooker 2055 y-pipe into a 40 series muffler with a 3 inch mandrel bend and a turn down. Not the prettiest setup but it sounds good and runs even better. Sounds just like a old muscle car.

DARCOM

heres mine you can see more of it at http://darcom.org

spills

iTrader: (9)

Damn, nice lookin setup dude. What kinda TQ/HP numbers you pushin for 4"? Motor seems pretty damn stout, im just curious

DARCOM

im not sure on the hp/tq but it does 11.00s and traps 126 and weighs 4000 pounds.

DTL504

iTrader: (1)

DARCOM
I see that you had to modified the Spohn T.A., How much ground clearance do you have from floor to custom Y-Pipe.

DARCOM

alot,, better than stock
i just sat the camera on the ground and snaped one for you

spills

iTrader: (9)

ok, Im about done with the 3" heddman y-pipe conversion. Its harder than I thought to expand the pipe over the old y-merger, ecspecially since its on a curve. Gimme we week or so and itll be done, with pics! Single 3", no cat into 3" dynomax super turbo

Badass355ciz28

iTrader: (17)

i dont have any pics available but i run a set of heddman headers with a heddman y pip to a guttet catalytic converter thru a 3 in magnaflow cat back.man does it sounds nice too looks bretty good also...

Joseph Andres

iTrader: (6)

here's one for you......Hooker longtubes, Mufflex Y, Mufflex 4", Borla XR-1 Muffler

Joseph Andres

iTrader: (6)

w/ muffler

DTL504

iTrader: (1)

Here is mine a 3" Custom Mandrel Bent Y-Pipe w/exhaust cutouts for the special occassion ran into a Magnaflow 3" Y-Collector to 3" Hooker Catback system.

DTL504

iTrader: (1)

Forgot the picture:

Method_z28

Damn i wish my underbody was that clean...i gotta deal with that lake effect snow.

spills

iTrader: (9)

that definitely is clean lookin.

Seein as how I started this damn thread, I figured Id need to get a pic of mine on here! I finally took mine to the exhaust shop and had them finish up the 3" y pipe for me. I got it at my shop now so Ill take some pics tomorrow and post em up.

DTL504

iTrader: (1)

I just left Chicago last Wednesday and feel your pain about that snow. Im a down south type of hot rodder. Now im in Houston 70* weather today and I had the top down after she got washed.

Method_z28

Yea Its very hard to find a rust free underbody third gen up here. was it that clean when you got it? It sound good with that setup? Your ride has to handle and take corners like a champ. I had to go with the hooker shorties/y pipe to the converter free borla cat back aqnd it sounds mean even for a 305

DTL504

iTrader: (1)

I live in Chicago for 14 months but did not drive my car in the rain or snow and it garage kept during all rain and snow storms. I cleaned the underbody about 3 years ago with POR 15.

indirocz28

Mine is pretty much rust free except jsut a lil on the floor pans, i undercoated the underbody when i had the motor, trans and driveshaft out.. now all i gotta do is finish the rear end- i was plannin to do it when i install tubular panhard bar, and liftbars..

spills

iTrader: (9)

i wanted to bring this thread back up. Anyone else wanna add to the collection? Theres some good pics on here, which gave me some ideas for my setup. Thanks guys!

1991Camaroz28

another tubular cat mine's got the stock mounting bracket off the rear of the old cat. it sure was a pain cutting it off the cat. the idea suddenly came to me when i was thinking how the heck am i gonna make someting that would hold up my exhaust and fit the flared catback pipe.

spills

iTrader: (9)

ok, now Im really bring this back from the dead!!

Im in the process of trying to find a T56 since my T5 snapped a gear on me. So once that's cone, Im going to re-route my exhaust. As is, it was rubbing the subframe on the passenger side. On top of that, the guy who installed the kit for me threw out a nice 3" MANDREL turn down and put on some crappy press bent turn down, all nice and dinged up and scraped and everything. So Im scrapping everything and starting over at the y-pipe.

SOOO, anyone got some updates, or some more pics?

CaliChevyLover

Fully welded. i HATE the look of clamps on exhaust. done by a local shop back home in maryland. website for muffler:
www.classicchambered.com

http://www.youtube.com/watch?v=XZjhHU4Kazo

yevgenievich

iTrader: (4)

hedman headers with 3" single into 89 series flowmaster

Darkshot

iTrader: (4)

Reid Fleming

iTrader: (2)

Stainless steel.







3" Catco cat with that. Headers/Y-pipe in the future.

IROCThe5.7L

lucky14

MattODoom Do you have problems with your Headmans cooking your Coolant Temp. Sensor... I have a fresh 383 and headmans on my 91 Z28 and man I have to have a kevlar sleeve (made for the plug wires) wrapped around it to get a somewhat reliable temp.. still runs 250-230 F according to the gauge... but I can grab the hoses and Im not overheating

irocin rick

iTrader: (1)

WOW! Everyone clean under bodies! Jealous! I got my car up on jacks right now cuse I smoked my clutch. So I felt like taking some pics. I got the summit shorty headers going in the a 2 1/2 Y-pipe into a 2 1/4 pipe to a dynomax muffler. I don't have the tail pipe welded yet. W.I.P. I suppose

1991Camaroz28

good to see a thread come back to life. i finally got headers on my car and the old y pipe was in bad shape so i had 2 pipes run to my flowmaster catback from the headers. it sure made a difference in how it sounds. the best part about the whole setup is when i replaced the transmission i didn't have to remove the exhaust at all. except that stupid bracket on the trans.

onebad82z

iTrader: (7)

Hooker 2210 LT's into my own custom made y pipe, Flowmaster single 3" cat back (well the pipes anyway)...BUT with a Hooker Aero Chamber muffler. Love the sound, can't wait to hear it with the new solid lifter!

https://www.thirdgen.org/forums/exha...ghlight=hooker

onebad82z

iTrader: (7)

That links is bad..try this!

https://www.thirdgen.org/forums/exha...ghlight=hooker

skinny z

I had posted this earlier.
Hedman hedders.
2.5" stainless y-pipe.
Magnaflow 10778 merge pipe.
3" Flowmaster to the end.

Demon355

iTrader: (1)

How does that sound Skinny?

skinny z

I can't say I'm entirely thrilled with it. WOT is wonderful. As is the idle. ( I may get a sound clip before I tear it all apart ).
I don't like the medium throttle acceleration note. It gets kind of raspy. Someone mentioned that it may be the single 3" from the muffler instead of the conventional duals.
I do know that the Flowmaster muffler dosen't flow nearly enough cfm to support my horsepower level. I understand that 2.2 cfm of muffler flow per engine hp is required to have no power loss from system backpressure. Maybe that has something to do with the sound.

nedoss

iTrader: (1)

Hedman long tube headers
Magnaflow Y pipe 2 1/2" to 3"
Dynomax 3" ultra flo bullet muffler
4" of ground clearance at lowest point

Here you go!

91Camaro

I cant make my mind up on gettings tips or having turndowns.

Fords88Bird

Nedoss, why the wrap on the pipes. Later.

spills

iTrader: (9)

I would assume maybe to help keep the trans temp down since the pipes are so close to the pan.

nedoss

iTrader: (1)

Two reasons, one as spills assumed is to keep the temp down around the transmission, transmission lines and fuel lines.

The other reason is my car has to be able to pass emission testing and my catalytic converter is pretty far back in my exhaust stream so I'm hoping the wrap will retain enough heat to help the catalytic converter work properly.
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91Camaro go with turn downs, tips just don't look right on 3rd gens.