I have hooked headers and flowmaster ex but I want a true duel from motor to tail is that possible on a lowered 84z28 with a 4 bolt main 350

 

It's possible, your just going to have clearance issues.

 

yeah your really going to have problems with scrapping the road but it can be done i have true dual exhaust on my camaro and at stock height and it scrapes mostly at high speeds and with two in the car i going to be putting some stiffer shocks on the back tho or maybe just some airbags in the back i don't know yet

i have a vid of my exhaust on here https://www.thirdgen.org/forums/exha...40-series.html

if you do it with a lowered camaro you will have to do oval pipes and a thin muffler

 

it would work better if it was a 2 bolt main...lol
JK, i couldn't help it

 

Yea I got true duals from my headers back and my downpipe scapes coming into gas stations with a steep incline and my car is lowered 2" but I still love it though. It sounds and looks better to me but yea clearance into some places is a bitch especially with more people and it being lowered.

 

look at the true dual sticky at the top. If you use shorty headers and run duals along the stock routing you can do it and keep your ground clearance. Dynomax apparently makes or made a kit to do it, there are pix of them on here. Or you can custom make a set of duals in the stock routing. Since you have an automatic trans, there is no where to run the pipes to keep them tucked up so running long tubes and duals with an automatic trans equals terrible ground clearance. Take the time to run duals along the stock routing and you'll get the sound and look you want without the headaches.

 

well guys i am having the motor rebuilt and found out it is a 2 bolt main but new cam 30 over pistons roller rockers new heads 205's edelbrock enforcer intake edelbrock 600 carb msd box accel hei super coil on accel dis.hooker headers to flowmaster 2 1/2" getting there any guys in nc look into high peak speed and clasics guys are amazing ....on the side was in there shop friday they had a 66 ss impala with a 454bb with bord out to a 488c" built to hell and back with headers and no exhaust they fired it up inside the shop with doors closed i thought i was going to **** everytime a piston fired you could feel it in your cheast thats to much power il stick with my 355 untill i get my supercharged 400 done

 

well when i first got my 400sbc into my camaro no exhaust just headers you could feel it in your chest standing outside 10 feet away...

if you get a 400 and supercharger it you might want to just think about getting a vortech supercharger to save room under the hood

and why are you rebuilding the 350 when you want a 400? if the 350 ran before you rebuilt it you should have sold it and got the 400sbc you want and started on that

oh and if you go 400 please dont forget to put a externally balanced flywheel on it like everyone els forgets to

 

Save yourself the time, money, and frustration. Put a good single exhaust on it and be done with it, you'll be happier.

I was in your shoes 16 yrs ago. Duals were a pain in the a$$. Ended up putting a good single exhaust on it and I still run it today, couldn't be happier with it. No more worrying about speed bumps, bottoming out at cruise and rattles. Oh, and that was stock ride height...

Why spend more money to do something not designed for the car when you can have a great single exhaust? Put that money in your motor and you'll be happier.

 

rattles? maybe you should of got a H when you had duals lol

 

yeah a single 3in exhaust is fine if you are running around 350-400hp. Some might say Im wrong and say you can run more than that but if your running like 500 hp threw a 3in i bet you will make more power with duals

 

i just put on shorty headers with true duel all the way back using the stock routing... both pipes run down the right side of the car semi following the original single pipe routing... i have about a 1/2 inch less clearance then stock.. once the pipes reach the metal shield right below the gas tank the pipes split and one is ran straight and the other is curved around to the other side of the car at a 45 angle... im running spiral flow tube mufflers from moroso... lemme tell ya that thing sounds like a muffled race car... legal? maybe maybe not lol but boy it makes that 305 sound like a 383 or 400 lol.. im not too worried about the ride height seeing as how my car is at stock ride height but i have big ole fat meats on it

 

Pics?

 

what size pipe did u run


Posted from Thirdgen.org App for Android

 

mine is 2.5 all the way back... ill try and get some pics

 

Agree completely.

Duals are too much stress and I'd rather go with a big single system (look into Mufflex, but they're not bolt-on and go, fab work required) and be able to have the car lowered and get the better looks and performance from that.

 

It all depends on how much you really put into it my dual 3 inch setup never drops lower than my full length headers I actually scraped more when I had shorties and a 2 1/2 single just cause it hung just below the k member. I did take awhile on my exhaust and I did it during my lt1 and t56 swap so it made it much easier. Just do your research and find what YOU want

 

I was also looking into a true dual. Im recently a new owner to the 3rd gen. I got a 88 formula 350. In the near future i was going to throw a full exhaust system into it after a few touch ups (tune up and new brakes) Should I not worry about a true dual and just stay with the single? Its so far a stock bird but i plan on making it into a project over time. Any advice is greatly appriciated

 

Just for reference when I had my 04 Dodge Ram with the Hemi I did all kinds of work on the engine and a true dual exhaust without cats and couldn't beat the top speed of a single 3" cated and with a Dynomax ultraflow, go figure. That's why with the camaro I don't even bother, I've seen a Supra put out 680hp on a dyno with a single 3" exhaust so...

 

It can be done A little preveiw to what I am working on.

This car has a 25" front fender lip, so it is low.

 

I've also run headers and true duals along the stock routing here are a few pics of what Ive got so far. still waiting to sell my 94 formula to pay for my mufflers and a few odds n ends. The u clamps in the second photo are no longer there. I was using them for line up. It id a dynamax 2.25 in set up and fit fairly good with very little modification

 

I am new to exhaust and am interested in this subject. would something like prototype F's setup work if you put in a 'X' pipe right about where his 2nd pic is then run through dual glass-packs and dump right in front of the rear tires running to the drivers side to compensate for the tube length being used to run the pipe through the original path? also woldn't it be more effective to have the pipes extremely close to the same length that way you have equal back pressure on both sides of the engine? Or would connecting the pipes together (through the x pipe) equalize the pressure. I know everyone hates it and tells poeple to start there own threads instead of asking questions on someone else but I thinks it's relevant to the topic

 

Why bother? It'd be functionally nearly identical to a single pipe at that point. A y-pipe is a perfect x-pipe. A bigger single pipe that flows the same... well... I dont think it's worth the extra cost and work to do it that way unless you're doing it for sound.

 

Flat tires and hotchkis 1.5 drop springs... still clears a soda can (after airing up tires)...

 

I like how you did the rectangle tips. How close to symmetrical with the centerline of the car is it when you do them that way?

 

Thanks, they were centered pretty well due to them being OE tips and they offset to one side to compensate for the lack of symmetry on the underside. It's a (personal) gripe of mine to see tips not equally spaced from center.

 

Nice work deadbird I'm wrestling with the idea of either a single or dual exhaust on my LS1 swap. What torque arm are you running, my Spohn hogs up a lot of room in the trans tunnel.

 

I've got the dynomax dual setup on my 92 and ground clearance has never been a problem. It's dual 2.25" pipes through a pair of glass packs mounted sideways under the rear bumper. I wish I had tucked them a bit closer to the body over the axle though as the axle hits one pipe over really bad bumps. It follows the stock routing. I posted the entire build in a thread on here, should be able to find it easily enough searching my username. I love it and wouldn't go back to a single setup.

 

i have a custom made true duals with 2.75" pipes routed the stock pattern also and love it my car is really low but havent scraped it yet

 

I can't stomach paying for that 4" mufflex system. 2.25 or 2.5 should flow great for what I have now and anything I build in the future. Was thinking about the flow master u fit kit then whatever extra bends I need to get around my crossmember. Was going to do a test fit with PVC fittings then go from there so I don't waste bends/$$$$

 

92 RS fit looks great nice work. I really want mandrel bends tho...

 

Thanks! I didn't realize the kit wasn't mandrel bent till I got it, but I'm not too worried about it as it should still flow plenty for the 350-400 hp i am aiming for.

 

Thanks, I'm running a stock arm. To note, I've also modified my stock x-member and have a t5. You could probably do a traditional dual with auto but, it would be tight and need heat shields.

 

Each their own.

After having done both, I prefer the single exhaust.

 

these true duel exhaust threads amuse me to no end. it seems so many have tried and failed to come up with a true duel exhaust that has enough ground clearance to go up or down a driveway, over a speed bump, pedestrian, or what ever. It just can not be done with out MAJOR fab work to the pan of the car. You have to cut and reform the floor board for more clearance to raise the exhaust tubing up for clearance and around the so many different transmission, cross member, torque arm, oil pan combinations that are out there. I have found the easy way to get around the clearance issues. Is to run stock ride height along with/or
1) a 28" tall drag race skinny front tires and 29" tall rear tires.
2) run open headers and trailer the car
3rd gens where never designed to have true duel exhaust. OLD NEWS.

 

Never modded a thing except putting humps in the stock trans x-member, just like other cars with dual exhaust.
I agree but, the op is asking about dual exhaust.
They were also not designed for lsx motors, bbc motors, t56, turbos, roll cages, tubbing, 4thgen dash etc. Those seem ok to do. Why s--t on someone wanting different exhaust ?