Speed engineering ls swap headers
 

Got my speed engineering headers in. They really are 1-7/8 or just a hair shy. What I like best is the clearance off the flange (no sharp bend right away) and best of all... the collector. A nerge bullet and a smooth necked down throat instead of a big step like the racing innovations obx or whatever ones. These ones are china made also but the primaries are clean.

Re: Speed engineering ls swap headers
 

More pics

Re: Speed engineering ls swap headers
 

Please post pics when you install them.

Re: Speed engineering ls swap headers
 

I'd like to add the pics I took to this thread. I'm fitting my engine/trans for measuring wire length, but I threw the headers on and took some pics.

Attachment 315365
Attachment 315366
Attachment 315367
Attachment 315368
Attachment 315369

You can see that the drivers side O2 location could be better. You have to install the sensor with the headers lose, then tighten them down. Also have to loosen the harness's loom on the sensor. It is touching the trans, but does fit.

Re: Speed engineering ls swap headers
 

Looks like a pretty tight fit. Does it touch the frame rails at all? My RI headers touch. Just curious as to how they fit around the tight spots

Re: Speed engineering ls swap headers
 

Looks much better than the RI headers though.

Re: Speed engineering ls swap headers
 

Plug clearance is good

Re: Speed engineering ls swap headers
 

I have these and the Racing Innovation headers too. Could take side by side pics if you guys want.

Re: Speed engineering ls swap headers
 

The tube routing is different, primaries are different sizes obviously, close in price, collectors are different lengths, O2 locations/angles are slightly different.

Overall not THAT much different I'd say.

Re: Speed engineering ls swap headers
 

Looks like they touch the sub frame in the last pic on the right/passenger side outboard of the starter flange. Any other pics of this area? I'm just cautious since I've already wasted 300.00 on the RI headers.

Re: Speed engineering ls swap headers
 

Twin_Turbo, you mind posting the part number? I literally just found Speed Engineering today. Was about to go with some mid length Headman Huslers ones, but these cost less and look great.

Re: Speed engineering ls swap headers
 

https://www.speed-engineering.com/ls...2-ls3-ls6.html
looks like them herel

Re: Speed engineering ls swap headers
 

I thought that was it, but I wasn't sure.

Re: Speed engineering ls swap headers
 

Just saw these and logged in to make sure these had been posted on here. I have 4 sets of SE headers. I modified a 2nd gen set last year to fit my GTA. Glad they finally came out with these.

Re: Speed engineering ls swap headers
 

Any chance you can take a pair of calipers to one of the primaries for a measurement? Curious if these are indeed 1 7/8 ID.

Re: Speed engineering ls swap headers
 

I did, they are 1-7/8 and in some sections because of the mandrel bends just a hair under

Re: Speed engineering ls swap headers
 

So they measured about 2" or so then? Thanks.

Re: Speed engineering ls swap headers
 

No they measured 1-7/8. That's OD not ID

Re: Speed engineering ls swap headers
 

I also ordered these, wasn't really happy with the RI ones I have.

I have both sets of headers,
hawks y pipe
SLP loudmouth 2

now hoping that these headers will take less modification to make my exhaust work. also running 4l60e. so ill soon find out how the fitment is.

Re: Speed engineering ls swap headers
 

Mine will be arriving in a couple days. To those who have them installed, what plug wires did you get? I don't want them to be too long and touch the headers.

Re: Speed engineering ls swap headers
 

I just put a set of these in my 89. No fitment issues, but #8 spark plug is a real PITA. Not a big deal to have to struggle with one plug though.

http://i65.tinypic.com/a9vjoj.jpg

http://i67.tinypic.com/2dgs0pf.jpg

Re: Speed engineering ls swap headers
 

Looks good. When you get it on the ground can you take a ground clearance picture? especially of the RH header. I have Racing Innovation headers and the RH collector sits lower than the Left just curious at how these compare, I have all but scraped thru the RH collector because of how low it sits the LH has never hit anything. Thanks

Re: Speed engineering ls swap headers
 

I am having the same problem with my stainless works headers. The right header/collector hangs below the front subframe. I have even shimmed the passenger side mount up an inch or so which helped, but did not correct the problem.

Re: Speed engineering ls swap headers
 

I have been contemplating cutting the primary down tubes and having a welding shop weld them back together to bring it up a couple inches, luckily these headers are inexpensive enough if it doesn't work it doesn't break the bank to get another set, it would suck to mess up a set of Hawks or stainless works headers.

Re: Speed engineering ls swap headers
 

It seems that every set of long tube swap headers (other than Hooker) I've seen has the same problem. I often wonder if it has something to do with servicing the starter???

Re: Speed engineering ls swap headers
 

Possibly so , if it ends up being a issue I'll just remove the header to change the starter its not too often one gets changed but good point.

Re: Speed engineering ls swap headers
 

This shows the Y pipe better than the collectors but I think ground clearance is good. My car is on Eibach springs, I think 1.5" drop springs.

Attachment 459822

Re: Speed engineering ls swap headers
 

I work in Afghanistan and I'm back at work on. I should've taken more pictures.

I don't think they could tuck up much better than this. They don't look like they're much below the oil pan

Attachment 459821

Re: Speed engineering ls swap headers
 

Looks way better than my current setup.....

Maybe when I finally pull the trigger on my head swap I will consider redoing my exhaust.

thanks for the pics!

Re: Speed engineering ls swap headers
 

i would kill for that kind of clearance. my passenger side header of my RI's is getting flattened with the terrible clearance.

Re: Speed engineering ls swap headers
 

Which trans crossmember and torque arm did you use? I'm trying to do this one time ... Any help is appreciated

Re: Speed engineering ls swap headers
 

Will these headers clear if im still runing my stock T5 trans? Due to the clutch slave cyl? If anyone knows please let me know I’m already $300 deep into different headers that don’t work thanks.

Re: Speed engineering ls swap headers
 

You must have been suckered into the Racing Innovations headers like so many of us not wanting to pay 1100.00 for headers. These Speed Engineering headers fit much better than the RI headers. I spoke to the guy at RI he said they were made off a third gen car, I wonder which manufacture third gen, not a GM model, they don't fit. I bought a set of the RIs and no matter how you look at it the Speed Engineering headers I bought fit much better. I have the RIs hanging on the wall in my garage (they make a nice wall display) to remind me to do more research next time I buy.

Re: Speed engineering ls swap headers
 

I've finished my exhaust system with these headers. The full build can be found starting at post #462 here:

https://www.thirdgen.org/forums/memb...1z-ls1-10.html

Here's a few pics. Many more in the above thread.

https://lh3.googleusercontent.com/tY...=w1416-h944-no

https://lh3.googleusercontent.com/DP...=w1416-h944-no

https://lh3.googleusercontent.com/Ui...U=w630-h944-no

https://lh3.googleusercontent.com/NQ...=w1416-h944-no

https://lh3.googleusercontent.com/K4...w2024-h1349-no

Re: Speed engineering ls swap headers
 

Has anyone ran these with a 4l60E yet? How is the clearance for the shifter linkage and the O2 sensors? Seem to be able to find the pics with everyone running a T56 so was wondering how it was with a bigger trans.

Re: Speed engineering ls swap headers
 

Anyone have any advise on installing the passenger side header? I can't seem to get mine installed, it is hitting the firewall and aft head bolt.

Re: Speed engineering ls swap headers
 

Jack the motor up, pull the starter.

Re: Speed engineering ls swap headers
 

Thanks I'll give that a shot this morning,