I'm about to order a whole new exhaust system.

Hooker 2055 ceramic coated (JET HOT) headers and y pipe

Carsound 3" Cat

Banks 3" Stainless steel cat-back.


I have a 1992 Camaro RS. What kind of gains will I see from this system? Will I really be able to notice it? I'm gonna be spending around $1000 on all of it once it's said and done.

If I decide to get an LT1 I can reuse all of the exhaust stuff (I believe) so that is one reason I'm getting it..

 

where are you buying your headers at. i cant seem to find those hooker 2055. according to the guys you will gain power for sure with those headers

 

I'm getting the headers from JET-HOT

www.jet-hot.com I believe. I'm getting them shipped for $600

 

That exhaust will support an LT1 provided you choose that route later on. You will also see a nice gain as your sits now. The Hooker 2055's can be bought from summit, jegs, thunderraing, jet hot and a few other places. If you have plans to modifiy your 305 TBI any farther I would look into chip burning stuff right away. You will get the most out of any exhaust set-up with chip work. The volumetric efficiency of a motor really changes when exhaust components are added.

 

Looks good, but with a 305 you'll probably lose low end tq because it's 3"

 

No he won't. He will gain power at every point in the curve.

 

I lost quite a bit of low end torque when I got my hooker comps on an otherwise stock L03.

 

the stock system is so restritive there is only one way to go with exhaust mods on the Lo3, more power tq and hp all the way around.

 

Regardless of whether or not that statement is true (I don't agree with it personally), saying that the exhaust is stock isn't enough justification to say that you will gain hp and torque everywhere. Do some reading on exhaust design, flow isn't the only thing of concern.

 

You will gain power. Most likely it is the increase in top end that makes the low end feel sub par. Also, this is considering you have the stock chip. Any speed density system will not repsond the way it should to mods like a full exhaust. You need to do chip because there is such a HUGE increase in volumetric efficiency. Even with the stock tune, which is off with a full exhaust, you should still see improvements at every point in the curve. Chip work will make your car run how it should with headers. It will be more obvious then.

 

Yes, I did gain power. What I was saying before is that the car lost significant bottom end torque. Right off idle to about 1600 rpm or so is what I am referring to. Before the headers, it was very easy to chirp the tires (with the tires fully warmed up from driving) on dry pavement. Put the headers on, drive the car several days later, and you would have to try noticeable harder to do the same as before. Granted, the car ran and pulled alot better in general, but the bottom end loss was nevertheless there.

I was surprised when this happened, as I wasn't expecting it. For a long time, I thought there was something wrong with the car, but I never did find anything wrong.

I do realize that I was still using the stock tune at the time, and that dialing in the VE tables would help considerably. However, there are alot of people who don't want to pursue diy proms, and are looking for simple, mild mods. At the time, that was my mentality.

That was several years ago. I no longer have that setup, and I am into prom burning now. I still have the engine though, its just not in the car anymore.

By the way, if anyone wants a free L03, just email me.

 

You feel the loss of power due to the tune. The engine is not running how it should be. I am glad you are into chip work because I garantee you that your low end will come back

 

With full exhaust mods you can gain quite a bit of power from the additional timing you can now run. I put 2055's and a 3" exhaust with no cat on my old 305, and did not notice any low end power loss. Like Shifty's saying, its all in the tuning. Ocasionally you will see someone on this board say they did a popular mod and lost power in the process. I gota think that they they overlooked somthing.

 

I agree with you guys that if I had sat down and tuned the VE tables so that the afr was at stoich throughout the table, I would pickup the torque that I lost.

However, what I had originally said was that on a completely stock L03, (meaning no tuning at all) I lost torque down low. I gave the car a premature tune up(wasn't due yet) at the time, and it didn't help any.

JokerRS, I agree that sometimes things get overlooked when people install aftermarket parts. However, what can someone mess up on a header install? I don't really see much that can go wrong. Worst I can think of is an exhaust leak.

I never really will resolve the issue, because I have a different setup now. Its still speed density tough....

 

Hooker 2055s, your 3 inch cat, and your same catback will work on an lt1? By LT1 are you refering to a 4th gen or just the engine. I didnt know their exhausts were interchangable. Hmm...ill have to rethink things then

 

92blue, I guess I consider making the necessary adjustments as part of the install. I will agree that if you just bolt them on you may not get as good results as some on else that did some tunning. Hopefully this thread will clear that up to the newbies. I did not have chip tuning capabilities at the time and was abile to get by just setting the base timing up and bumping the FP slightly.

 

That set-up will work on an LT1 swap into a 3rd gen. The motor and exhaust are in the same location but you may want bigger primaries to swallow up the LT1 D port heads.