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DirtyMJ
October 22nd, 2017, 17:58
I've been poking around looking at header options for an LS swap, and I've hit enough of a wall that I had to dust off my username here to ask.

I have three known solutions.

The Novak ones. Pricey, especially for the ceramic coated ones at $520 USD.

Hooker LS Manifolds http://www.jegs.com/p/Hooker-Headers/Hooker-LS-Cast-Iron-Exhaust-Manifolds/1918563/10002/-1 They're actually not a bad option, they cost a few bucks but should be reliable and do fit well. $400 USD for ceramic coated, however the adapter pipes (from Hooker) that you would have to butcher anyways are another $120 (you could buy something generic for less, which would make sense anyways).

Butcher a set of F-body car stockers. Not really interested because I'd probably have to pay a bunch of money for them to start with.

And that's all I know.

So, onward to cheaper options that I'm curious if anyone has tried.

Ebay set for a C10 swap: http://www.ebay.ca/itm/C-10-LS-Chevy-GMC-Truck-Headers-LS1-LS2-LS3-LS6-Conversion-Swap-/271834891676?hash=item3f4a9f459c:g:TQ8AAOSwW9dZ1sM T&vxp=mtr

These I really want to believe would fit, assuming I'm going to hack off the UCA mounts from the frame anyways. They're much cheaper ($170 US with adapters) and made out of stainless that allegedly a magnet won't stick to.

Or we have the S10 swap version: http://www.ebay.ca/itm/LS-Swap-S10-Conversion-Headers-LS1-LS2-LS3-LS6-LS-Engines-Truck-SUV-/361829545706?hash=item543eb8b6ea:g:wjQAAOSw2TdZ4TJ 5&vxp=mtr

Which looks suspiciously similar to the Novak ones...

So, anyone tried anything beyond my first three options? I just want something that won't rust (hate rust) and doesn't cost a fortune.

Jeep Driver
October 22nd, 2017, 19:21
https://www.novak-adapt.com/catalog/headers/gm-g3-v8/gm-g3-headers-xj-mj

Anak
October 22nd, 2017, 19:59
I just want something that won't rust (hate rust) and doesn't cost a fortune.

I wish you luck.

Just so you know, ceramic will eventually rust. It is a galvanically active sacrificial coating. Its lifespan will vary depending on environment. It does great with heat, but not so great with moisture. A garage queen that rarely gets fired up provides one of the worst combinations of conditions. A daily driver in Arizona would probably see the coating last much longer than a daily driver on the east coast.

DirtyMJ
October 22nd, 2017, 20:41
https://www.novak-adapt.com/catalog/headers/gm-g3-v8/gm-g3-headers-xj-mj

Thanks for linking me to something I discussed in my opening post!

DirtyMJ
October 22nd, 2017, 20:46
I wish you luck.

Just so you know, ceramic will eventually rust. It is a galvanically active sacrificial coating. Its lifespan will vary depending on environment. It does great with heat, but not so great with moisture. A garage queen that rarely gets fired up provides one of the worst combinations of conditions. A daily driver in Arizona would probably see the coating last much longer than a daily driver on the east coast.

I hate ceramic coating as I think it's an expensive solution that doesn't really solve a problem, however given how much I hate rusted plain steel, and the poor performance of any DIY header coatings I have tried, it is an option I will consider.

I'd rather just go with 3xx stainless and be done, which I do not understand why more headers are not available in. The material cost is not that much higher for a mass producer vs a regular low carbon steel.

The last stainless eBay header I bought (a 4.0L one) didn't stick to a magnet, and was dirt cheap. That said it didn't actually fit my application, and I would up modifying the crap out of it, but I was happy with the end results as nothing off the shelf would have worked right anyways, and it was a fraction of the cost of the other options.

Anak
October 22nd, 2017, 20:50
I'd rather just go with 3xx stainless and be done, which I do not understand why more headers are not available in. The material cost is not that much higher for a mass producer vs a regular low carbon steel.



IT is a PITA to bend.

It requires higher pressures on the bend dies which then leads to greater wear and tear on the tooling, and even then there is still a substantially higher percentage of bad bends; generally lots of ripples on the insides of the bends.

DirtyMJ
October 22nd, 2017, 22:02
IT is a PITA to bend.

It requires higher pressures on the bend dies which then leads to greater wear and tear on the tooling, and even then there is still a substantially higher percentage of bad bends; generally lots of ripples on the insides of the bends.

Yet the Chinese have perfected it at a fraction of the cost!

JohnX
October 22nd, 2017, 22:24
I bought some Chinese shorty's in Stainless for my LS miata, hard to beat for under $200. Not sure if they'd give the right clearance for a XJ.

clydefrog
October 22nd, 2017, 23:30
Honestly. I would go with the Novak ones.

I had o modify some shorty's cause' I am in California (Novak ones are not smog legal here) and it was a PITA and cost way more than the Novak ones. I wouldn't modify S-10 ones or factory ones. Think HP, Headers will be better in the long run.

DirtyMJ
October 23rd, 2017, 07:24
Honestly. I would go with the Novak ones.

I had o modify some shorty's cause' I am in California (Novak ones are not smog legal here) and it was a PITA and cost way more than the Novak ones. I wouldn't modify S-10 ones or factory ones. Think HP, Headers will be better in the long run.

What shorties did you start with?

Jeep Driver
October 23rd, 2017, 07:52
Thanks for linking me to something I discussed in my opening post!

I was making a point every time you cheat out it ends
up costing you more in the long run the novaks are known to fit

Green XJ Jeep
October 23rd, 2017, 07:54
FrankZ used a sanderson header on his swap. PM him for the part number

DirtyMJ
October 23rd, 2017, 08:34
FrankZ used a sanderson header on his swap. PM him for the part number

The Novaks are Sandersons. Sure it wasn't just the Novak ones?

Edit, 99% certain he used Novak ones. Either way, Sanderson headers are the same price as Novak, and they're the same product with the same limitation, I don't want crap mild steel headers.

Green XJ Jeep
October 23rd, 2017, 08:43
The Novaks are Sandersons. Sure it wasn't just the Novak ones?

Don't know his build thread just said sanderson. Its over on ls1tech.com there are a few others over there also

DirtyMJ
October 23rd, 2017, 09:18
Don't know his build thread just said sanderson. Its over on ls1tech.com there are a few others over there also

It's on NAXJA too, they're Novak ones, he says something to effect that the Novak mounts bent him over a barrel and require their headers. There's discussion of them VS the S10 conversion headers too, and they are different, at least in the Sanderson brand.

RCP Phx
October 23rd, 2017, 11:01
Have you looked at the Banks SS shorty's?
https://www.summitracing.com/search/department/exhaust/section/headers/make/chevrolet/engine-family/chevy-small-block-gen-iii-iv-ls-based-engines?N=4294948820%2B4294945642%2B401521

jhc7399
October 23rd, 2017, 11:01
All the research I did on my swap coming up is the Novak headers are the only ones that will fit with out modification.

If yopu find another that works please repost.

DirtyMJ
October 23rd, 2017, 11:27
Have you looked at the Banks SS shorty's?
https://www.summitracing.com/search/department/exhaust/section/headers/make/chevrolet/engine-family/chevy-small-block-gen-iii-iv-ls-based-engines?N=4294948820%2B4294945642%2B401521

Looks like they turn outwards too much.

And at that price I won't gamble, as it costs me massive amounts to ship things back (I live in Canada).

Green XJ Jeep
October 23rd, 2017, 13:05
If your looking for a no mod needed header Novak is it.
I have seen Denali exhaust manifolds used with no mods but you have to notch and box in the pass side motor mount.

RCP Phx
October 23rd, 2017, 16:37
I hope you realize that you can run the manifolds "reversed"! My '66 Jeep Gladiator with a factory AMC 327 had the drivers side exhaust wrapping under the harmonic balancer to get to the passenger side.

clydefrog
October 23rd, 2017, 20:03
What shorties did you start with?
Pace Setter. They where $200 if I remember correctly plus another $660 to modify them (they have a carb cert so I needed these to make it smog legal). I am glad you are going with the Novaks, they really are the no headache best headers for an LS in the XJ.

DirtyMJ
October 23rd, 2017, 20:58
Pace Setter. They where $200 if I remember correctly plus another $660 to modify them (they have a carb cert so I needed these to make it smog legal). I am glad you are going with the Novaks, they really are the no headache best headers for an LS in the XJ.

Where did I say I was going with the Novaks?

I'm not even going to use their mounts...


Edit, how come they cost $660 to modify? Dare I ask?

clydefrog
October 23rd, 2017, 23:26
Where did I say I was going with the Novaks?

I'm not even going to use their mounts...


Edit, how come they cost $660 to modify? Dare I ask?
Oops sorry, different person jhc7399 said he was going with them, I misread the username.

I had to make the headers look factory or smog legal. Here in California the ref will look at pictures of the headers to see if they have been modified. I had to shorten them about 1/4 to 1/2 inch. My welding isnt that great so I had a REALLY good welder/muffler shop modify them for me then I cere-coated them so they still looked stock with the carb eo plaque still in tact. I honestly have about 1/4 clearance one each side next to the frame.

They work really well with no rubbing or touching. I have about 20K on the swap. I really wish I could have just bought some that would fit. There really isn't anything out there except the Novaks that are a true header and not a manifold. If the pics in my build thread worked (sig) then you could see them, I really need to re-host my pics...one day.

Headers: $199 from Summit
Cere-kote: $200
Muffler shop labor plus new collector flanges: $460

DirtyMJ
October 24th, 2017, 08:36
I ordered the S10 conversion set. I decided the C10 set would be less likely to work because the driver's side will dump too far back.

I do have another motivation to ordering the 'wrong' parts. I have a 66 Gladiator that is slowly getting pieced together, and I know I can fit them on it if need be. Of course now I've gone and stolen the transmission from it for this project, so it's actually going backwards...