Group Buy Stainless Works.

[cvette98pacecar]

I have contacted Stainless works directly. If we have a group buy of 7200.00 we will get 30% off the purchase price.
The Net purchase needs to be 5000.00 to get the discount.
This will be a one time offer. Buy what you need now to get the discount.

[Dynomite]

I have contacted Stainless works directly. If we have a group buy of 7200.00 we will get 30% off the purchase price.
The Net purchase needs to be 5000.00 to get the discount.
This will be a one time offer. Buy what you need now to get the discount.

Count me in for SW Headers and Exhaust for a 90' ZR1 WITHOUT Air Induction and WITHOUT EGR.

This is what I have on my 91' ZR1 and they fit perfectly with absolutely NO issues :thumbsup:
SW headers ZR1CORVOR
SW exhaust ZR1CHAMSW

Installing Headers (http://forums.corvetteforum.com/c4-zr-1-discussion/3005470-tech-info-lt5-modifications-rebuild-tricks-500-hp-5.html#post1581825195)
Installing Engine In ZR1 (http://forums.corvetteforum.com/c4-zr-1-discussion/3005470-tech-info-lt5-modifications-rebuild-tricks-500-hp-5.html#post1581825199)

Thanks,
Cliff

[4-cam]

Perfect timing,
I would be in for a set of headers & cats. SW #ZR1CORVCAT

[Ace Boogie]

Insane timing!

[gbmidyear66]

I'm interested in ZR1FACTCAT (with thermal coating) for next winters project.

I'm a little intimidated at the prospect of doing this in my garage without a lift though - is this doable for the marginally competent :icon_ques

[LGAFF]

I think without the lift might be easier; there is alot of up and down in putting these on and the lift takes time to raiser and lower.


I'm interested in ZR1FACTCAT (with thermal coating) for next winters project.

I'm a little intimidated at the prospect of doing this in my garage without a lift though - is this doable for the marginally competent :icon_ques

[LGAFF]

Let me know if its close, debating if I want to use this on the 1991 project car:cheers:

[Kevin]

great price, absolutely no way i can afford it

[Pete]

I'm interested in ZR1FACTCAT (with thermal coating) for next winters project.

I'm a little intimidated at the prospect of doing this in my garage without a lift though - is this doable for the marginally competent :icon_ques

The header installation is easy,taking off the factory exhaust manifolds are a bit of a pain.
Take wheel well panels off.
Just take your time and use some of those bad words if you have to :)


Pete

[GOLDCYLON]

Suggest an oil.dipstick seal as well. Just saying. GC

[Paul Workman]

Suggest an oil.dipstick seal as well. Just saying. GC

Well, now that you mention it, I can supply some of those dipstick brackets you'll need when you install the headers...

http://i185.photobucket.com/albums/x220/6PPC_bucket/tech%20files/bracket003Large.jpg
http://i185.photobucket.com/albums/x220/6PPC_bucket/tech%20files/bracket004Large.jpg
http://i185.photobucket.com/albums/x220/6PPC_bucket/tech%20files/bracket005Large.jpg

PM me if you need me to make one (some) up.

P.

[efnfast]

Paul, my header install guy was happy I provided him with your bracket. Anybody doing headers, I would suggest buying Paul bracket. -Steve

[Fully Vetted]

Where does that bracket go? I need to see if the PO already put one on. And is it a replacement for a bad bracket or an additional bracket?

[efnfast]

I didn't do the headers, but I beleive the dipstick needs to be relocated because of the headers, this bracket just shifts it over a bit.

[Fully Vetted]

Must've been done then. PO put on SW headers. I'll look, tho. Thanks.

[Meanmyz]

Well, if I am ever going to do it, this is probably the best price I will ever see, so put me in for headers & hi flow cats (with thermal coating) sku: ZR1FACTCAT.

I plan on hooking up the air tubes...Can SW include the tubes, or is that something that is done later...such as Marc does???

[gbmidyear66]

Meanmyz - good qn.... Anyone know?

My understanding is that the air injection only plays a role in reducing emmissions before the engine is warmed up? I am assuming I could still pass emmissions without air injection (with CATs). They don't do visual inspection here.

A question on Thermal Coating.... from what I have been reading on the web there seems to be mixed opinions as to whether it is much benefit when used on SS headers. Is it worth it/necessary? Is there a cheaper alternative anyone would recommend?

Lastly... Whats the process to participate in this deal - call up SW directly and mention the forum?

Thanks

[thethrillofspeed]

If you get the headers and cats with the factory connection, where does it bolt to?

[gbmidyear66]

It should bolt up directly to your factory exhaust (or an exhaust with equivalent connections to factory). In my case I have a flowmaster system. Since it bolts up directly to the factory manifolds/cats - I assume it will also bolt up directly to headers with a factory connection

[thethrillofspeed]

Does it replace the factory resonator?

[gbmidyear66]

Headers just replace the factory exhaust manifolds and factory CATS

SW also sells a seperate exhaust system I believe - you could use factory, use the SW exhaust, or some other aftermarket exhaust system

[Paul Workman]

Does it replace the factory resonator?

Only if you also opt for the X-pipe too. Which reminds me...

If I recall correctly, I believe at one time SW had two X-pipe options; one with a "cheese grater" liner (presumably to address resonance) and one w/o. Personally, I opted for the clean 3" X-pipe (no such liner). Might be worth asking about if also purchasing the X-pipe - IF it is even offered anymore. Just sayin.

p.

[Corbusa]

I'm in for the x pipe # ZR1X

[TCurtner]

I'm in - '91 ZR1 - do NOT want air injection. From reading above this is doable. Whom/how do we contact for specs/final deal? :handshak:

[TCurtner]

Excellent! 30HP never sounded so sweet - can't wait.

[USAFPILOT]

shere was this group buy 2 years ago? FYI a B&B x pipe and catback will slip right onto the SW Headers. If you get their pipes that extend off the headers to their resonator.

[Ace Boogie]

So how much would these cost together?

[Ace Boogie]

And whoever had the exhaust. How did it sound, cause I want that throaty sound.

[Paul Workman]

And whoever had the exhaust. How did it sound, cause I want that throaty sound.

Sound, good or bad, is in the ear of the beholder!

Headers + Corsa:

The Corsa stainless cat back runs about $1500. The headers were $850 to me 4 years ago (group purchase then too) so figuring "Affordable Healthcar" tax, etc, guessing $1000 shipped for the headers; a little more if you choose to also buy their cats, and add $250 - $350 to powder coat the headers (optional).

Bottom line estimate: $3000 to $3200 (uncoated) should get you close for the headers and Corsa catback w/cats if you install 'em.

As for sound, the Corsa (to me) has more of a raspy sound - kinda like an F1 V12 car, and no resonance and less of a deep throaty sound (to my ear).

As for performance, opinions (and data) varies - even among experts.

B&B:

Costwise, close to the SW/Corsa discussed.

Sound is deep and throaty, but there is a resonance issue with the higher performance "kits".

SW:

Stainless works makes a complete system too. I don't know what they sound like or who to refer you to on that. But, at the discount price it would be well worth looking into, especially now.

Custom:

The all-out perfromance system, with "reasonably controlled" resonance (that incedently several of the "FBI" gang is trending to), is a 3" dual with a SW X pipe and a Dynamax Ultra Flo 17228 with an exhaust flow gate on one of the outlet tubes (either the NPP from a C6Zor ZR1, or various electrically controlled gates).

(Note: An altrnative to the DM Ultra Flo 17228 muffler might be the Dynamax VT 17963 with built-in gate. DM claims "no resonance", FWIW, but to my knowledge is unproven on the ZR-1.)

This custom approach has the potential to be the most cost effective while being a proven performance setup. And, the sound is incredibly good and resonance is mitigated to the point normal conversations can be had while cruising (according to Pete and others). But, whenl you hammer it, the system simply becomes ferocious!! (Dominic has a video of this system on his car.)

Cost of the custom system depends on the discount and how much of the SW system is included in the complete system. But, potentially it may be the most cost effective route of the three, depending on cats/no cats, coated or uncoated, NPP (or the like) or VTs.

P.

[Paul Workman]

Excellent! 30HP never sounded so sweet - can't wait.

Of course ya know, any alterations to the intake or exhaust system requires tuning to maximize the results.

[ZZZZZR1]

shere was this group buy 2 years ago? FYI a B&B x pipe and catback will slip right onto the SW Headers. If you get their pipes that extend off the headers to their resonator.

How much was the X pipe back then?

I'm considering adding that too.... I don't see that offered anymore on SW's site

:cheers:

David

[Dynomite]

Stainless works makes a complete system too. I don't know what they sound like or who to refer you to on that. But, at the discount price it would be well worth looking into, especially now.

P.

Paul draws a blank :D

SW complete Offroad Headers and Exhaust System I installed on my 91' in 2010 sounds exactly like what I was looking for.....sounds like a very hot ZR1 with lots and lots of HP :-D

see ZR1CORVOR & ZR1CHAMSW (http://www.zr1.net/forum/showthread.php?p=78444) Post 56 - post 76.

Yes you CAN install an LT5 engine into a ZR-1 with Headers attached and WITHOUT removing the hood ;)

http://i287.photobucket.com/albums/ll142/dynomite007/C%20Engine%20LT5/bb9babbf-fe78-48d4-9719-8a19a11feab3.jpg

[Paul Workman]

How much was the X pipe back then?

I'm considering adding that too.... I don't see that offered anymore on SW's site

:cheers:

David

Dave, if I recall, I paid right about $275 for mine about 3 years ago, but that was outside the group purchase price.

Oh! I also bought some of their stainless clamps, as I wanted to mix and match my system for best results and ease of removal when necessary. They're really quality items.

I believe it was Al that designed the pipe for SW. You'd have to check with him, but I believe he said it can be worth about 10-15 hp on a 350, and more on a 441 ci LT5 (with tuning, of course). B&B is/was using the design as part of their kit. However, getting B&B to sell their system in anythig but complete kits has been "difficult" in the past. Good luck.

P.

[USAFPILOT]

How much was the X pipe back then?

I'm considering adding that too.... I don't see that offered anymore on SW's site

:cheers:

David

the X-Pipe is an option with the B&B cat back. I think it is the same cost with it or the resonator. I wanted as little restriction on the exhaust as possible. It sounds incredible, but does have some drone. Some day I might quiet it down a little so my wife and I can talk. However, sometimes I prefer not to listen to her.

[Starman]

I just finished installing the SW ZR1CORV-3/8 kit on the 1991. It is non-air tube, non-cat, hooked to a modified LT1 exhaust.

Got the Black Friday deal last year. If you do not want the EGR tube, better call and speak with a person! I left an e-mail with my order number that was never read/acted upon and got an EGR tube (since removed). I did call and explain that it should be the exception, not the rule on their product. I also had problems with the short adapter pipe on the passenger side that was made wrong, but a quick trip to a local muffler shop fixed that.

If you are not into making brackets, you will want to buy Paul Workman's piece as you have to do something with the dipstick tube.

You do have to remove the rear and center wheel well sections on both sides, the O2 electrical connection on the passenger side is also a charm. I have a lift and used the pauses to enjoy beverages, but there is a lot of up and down with this project.

[Paul Workman]

Paul draws a blank :D

Yeah, well...more often than I car to admit!!!:o


Yes you CAN install an LT5 engine into a ZR-1 with Headers attached and WITHOUT removing the hood ;)

http://i287.photobucket.com/albums/ll142/dynomite007/C%20Engine%20LT5/bb9babbf-fe78-48d4-9719-8a19a11feab3.jpg [/QUOTE]

Gawd...I love that pix! It just says...BRUTAL! to me!

Dayam...IS IT SPRING YET??????

[efnfast]

Why does everyone work around the hood? Realignment issues?

[BigJohn]

Why does everyone work around the hood? Realignment issues?


I do not know how others do it!
We just drop the engine out the bottom.
So there is no need to remove the hood.


:neutral:

[Ace Boogie]

So would a corsa exhaust fit on this header?

[Kevin]

yes, they do

[Starman]

The hot trick for hood realignment is to remove the entire headlight assembly on both sides and the latches. If you loosen the hood to hinge bolts or the hinge to frame bolts, you can get at enough of them this way with the hood closed to lock it down. I used shims between the hood and doors to get the rear height right.

By the way, it is not necessary to remove the hood just for the headers, the manifolds come out the bottom and the headers go back in the same. I decided to refinish the rusty hood hinges and bought into the job that way.

The guys talking about dropping the engine out the bottom are 100% correct - that is how they were loaded at the factory and why we have LT5 engines from Lotus instead of small blocks with 4 valve heads.

[Corbusa]

Do we call SW and place the order ?

[cvette98pacecar]

I am going to get all of the Information from Stainless works in the next few days.

[Corbusa]

very cool :) thanks

[mike100]

I'm in for a full cat-back. Details to follow on the connection type. Basically the ZR1C (chambered muffs) or maybe the ZR1CORV-3/8 variant.

[cvette98pacecar]

I'm in for a full cat-back. Details to follow on the connection type. Basically the ZR1C (chambered muffs).

Mike, Stainless works is currently working on a spreadsheet so there will be no errors in making a choice. I will send a Email to everyone that has shown interest in the Stainless works headers.

[mike100]

Mike, Stainless works is currently working on a spreadsheet so there will be no errors in making a choice. I will send a Email to everyone that has shown interest in the Stainless works headers.

I was talking to them today- will know exactly how I'm gonna order by tomorrow. Thanks if I can still get in on this.

[TCurtner]

keep me posted on when we may order

[TCurtner]

Mike, Stainless works is currently working on a spreadsheet so there will be no errors in making a choice. I will send a Email to everyone that has shown interest in the Stainless works headers.


Have yet to get email - FYI

[EWest]

I have interest. Please include me in the emailing. Thanks.

[batchman]

I'll throw my hat in here perhaps only an x-pipe but could become catback. The parts collector in me wants to go full boat since this deal is not likely to be around if/when my current headers give up the ghost.

Later,
- Jeff

[batchman]

SW complete Offroad Headers and Exhaust System I installed on my 91' in 2010 sounds exactly like what I was looking for.....sounds like a very hot ZR1 with lots and lots of HP :-D


Curious if you get comments that this config is loud?

I have a problem with sound limits at my events and my Watson/cats/Borla setup is right on the edge (or over) at 75' away.

Cheers,
- Jeff

[cvette98pacecar]

Everything that is available will be posted in the store shortly. I am waiting on Paul from stainless works to get back to me with the pricing.

[Dynomite]

Curious if you get comments that this config is loud?

I have a problem with sound limits at my events and my Watson/cats/Borla setup is right on the edge (or over) at 75' away.

Cheers,
- Jeff

It makes noise when you step on it but just cruizing along I had a CHP (California Highway Patrol) follow me within a few feet of my tail for the longest time on a CA backroad recently and then slowley pass me when he seen I was not about to go over 45 mph no matter what.....:D

Me with my South Dakota Plates in CA (just visiting)......

Cliff

[batchman]

At least it looks like with the SW setup I'd have some options for adding more muffler. Believe it or not I really need to quiet this thing down some, just a couple of db. I've been hoping I could do that and lose weight/gain power at the same time but that sounds spendy.

Cheers,
- Jeff

[Mystic ZR-1]

At least it looks like with the SW setup I'd have some options for adding more muffler. Believe it or not I really need to quiet this thing down some, just a couple of db. I've been hoping I could do that and lose weight/gain power at the same time but that sounds spendy.

Cheers,
- Jeff

That's right, I can hear you lite it off all the way down here in Connecticut [-X.... Hope to see ya Saturday @ Bobs!!!
D

[Paul in SC]

Please add me to the interested list.

Does anyone have an SW system and can give me an idea on sound versus others. I currently have Watson headers with no cats, stock 2.75 with stock resonator and mufflers.

This new set would be 3" with an x-pipe. I am not sure of which mufflers to get with the system; suggestions welcome. Checking options...I know B&B, Corsa, Borla, etc.

Thanks,
Paul

[Meanmyz]

Paul, I see that you have headers (without cats) and stock resonator and mufflers....

Anyone can chime in here:

With the '93 - '95 resonator and mufflers is it kind of an oxymoron to do a 500HP build with headers and hi flow cats and then be running through the stock resonator and mufflers?

From Marc H's information, it looks like the biggest restriction is at the inlet of the muffler. Also, in info on his site, it shows a general 5HP difference between 2nd generation stock and a freer flowing exhaust. I guess my question is...does that difference widen as you increase HP?

I am asking in assessing what I might do for mufflers.

[Paul in SC]

Paul, I see that you have headers (without cats) and stock resonator and mufflers....

Anyone can chime in here:

With the '93 - '95 resonator and mufflers is it kind of an oxymoron to do a 500HP build with headers and hi flow cats and then be running through the stock resonator and mufflers?

From Marc H's information, it looks like the biggest restriction is at the inlet of the muffler. Also, in info on his site, it shows a general 5HP difference between 2nd generation stock and a freer flowing exhaust. I guess my question is...does that difference widen as you increase HP?

I am asking in assessing what I might do for mufflers.

Great points Meanmyz and you are right. That is why it is time for a change...now just to find the right setup for sound and power.

I don't mind noise and definitely need the free-flow versus stock. I really want to hear the "camming" and rumble at idle and the roar at WOT.

[secondchance]

With headers, no cats and 94 stock exhaust it registered 1.4 psi @ 6000 rpm.
Same with free flow exhaust (OBX in this case) dropped to 1 psi.

[Paul in SC]

Yun and others,

This thread has been hijacked...sorry. I didn't mean to get away from SW Group Buy. I was asking about the SW system versus others and now we are getting into specifics on what is right for higher HP engines.

I am still interested in what is available with SW.

I am taking topic up in Technical for discussions on systems, specs, HP diffrerences, etc if anyone wants to join in.

Thanks....

Paul

[Meanmyz]

Your right Paul, I have helped hijack too. I am sorry guys. I can't wait for SW headers and cats. Paul, I will look for your thread later in technical.

[mike100]

I decided to take a chance on the SW cat-back because they have the option of a quiet(er) muffler option. That and the X-pipe is a true 3" narrow set that should work well.

I had a B&B setup on a stocker and it was really loud, but the 3-chamber turbo muffs available on the SW one should help a lot (especially if one puts the NPP type valve on one of the dual outlets)

[batchman]

I decided to take a chance on the SW cat-back because they have the option of a quiet(er) muffler option. That and the X-pipe is a true 3" narrow set that should work well.

I had a B&B setup on a stocker and it was really loud, but the 3-chamber turbo muffs available on the SW one should help a lot (especially if one puts the NPP type valve on one of the dual outlets)

DING DING DING DING - we have a winner! Looking again at the catback I see two muffler options, chambered and S-tube. I take it the chambered is the quieter option?

The valve approach won't help me any - my problems are at WOT!

Thanks,
- Jeff

[cvette98pacecar]

Here is a link to the new post.

http://www.zr1.net/forum/showthread.php?t=20155

[TCurtner]

Here is a link to the new post.

http://www.zr1.net/forum/showthread.php?t=20155


I responded via PM and at new link