Speed engineering ls swap headers - Third Generation F-Body Message Boards


Aftermarket Product Review Provide questions and answers about aftermarket parts for the Third Generation F-Body.

Speed engineering ls swap headers

Reply
 
Thread Tools Search this Thread
Old 04-10-2017, 02:45 PM   #1
Supreme Member
Thread Starter
iTrader: (25)
 
Twin_Turbo's Avatar
 
Join Date: Jun 2000
Location: Enschede, Netherlands
Posts: 5,124
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27


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.
Attached Thumbnails
Speed engineering ls swap headers-20170407_144248.jpg   Speed engineering ls swap headers-20170407_144124.jpg   Speed engineering ls swap headers-20170407_144131.jpg   Speed engineering ls swap headers-20170407_144226.jpg   Speed engineering ls swap headers-20170407_144147.jpg  

Speed engineering ls swap headers-20170407_144139.jpg  

Last edited by Twin_Turbo; 04-10-2017 at 02:48 PM.
Twin_Turbo is offline vBGarage Page   Reply With Quote
Old 04-10-2017, 02:58 PM   #2
Supreme Member
Thread Starter
iTrader: (25)
 
Twin_Turbo's Avatar
 
Join Date: Jun 2000
Location: Enschede, Netherlands
Posts: 5,124
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27


Re: Speed engineering ls swap headers

More pics
Attached Thumbnails
Speed engineering ls swap headers-irs20170410_215528.jpg   Speed engineering ls swap headers-irs20170410_215655.jpg   Speed engineering ls swap headers-irs20170410_215621.jpg  
Twin_Turbo is offline vBGarage Page   Reply With Quote
Old 04-10-2017, 08:14 PM   #3
Senior Member
 
92BLKL98's Avatar
 
Join Date: Apr 2001
Location: Powder Springs, Georgia, USA
Posts: 732
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23


Re: Speed engineering ls swap headers

Please post pics when you install them.
92BLKL98 is offline vBGarage Page   Reply With Quote
Old 04-11-2017, 07:40 AM   #4
Senior Member
iTrader: (4)
 
robguitargod1's Avatar
 
Join Date: Oct 2008
Location: Niles, IL
Posts: 829
Car: 86 Camaro, 89 IROC, 87 Cadillac
Engine: 355 SBC
Transmission: T56
Axle/Gears: Currie 9" 4.57 gear, detroit locker

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.







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.
robguitargod1 is offline vBGarage Page   Reply With Quote
Old 04-11-2017, 07:05 PM   #5
Senior Member
 
Join Date: Jun 2009
Location: N.E. Ohio
Posts: 550
Car: 87 Gta
Engine: 5.3
Transmission: 4l60e
Axle/Gears: 3.42

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
cypris09 is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 08:48 AM   #6
Senior Member
 
92BLKL98's Avatar
 
Join Date: Apr 2001
Location: Powder Springs, Georgia, USA
Posts: 732
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23


Re: Speed engineering ls swap headers

Looks much better than the RI headers though.
92BLKL98 is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 08:54 AM   #7
Supreme Member
Thread Starter
iTrader: (25)
 
Twin_Turbo's Avatar
 
Join Date: Jun 2000
Location: Enschede, Netherlands
Posts: 5,124
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27


Re: Speed engineering ls swap headers

Plug clearance is good
Attached Thumbnails
Speed engineering ls swap headers-20170413_094811.jpg   Speed engineering ls swap headers-20170413_094818.jpg   Speed engineering ls swap headers-20170413_094824.jpg  
Twin_Turbo is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 09:23 AM   #8
Senior Member
iTrader: (4)
 
robguitargod1's Avatar
 
Join Date: Oct 2008
Location: Niles, IL
Posts: 829
Car: 86 Camaro, 89 IROC, 87 Cadillac
Engine: 355 SBC
Transmission: T56
Axle/Gears: Currie 9" 4.57 gear, detroit locker

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.
robguitargod1 is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 09:25 AM   #9
Senior Member
iTrader: (4)
 
robguitargod1's Avatar
 
Join Date: Oct 2008
Location: Niles, IL
Posts: 829
Car: 86 Camaro, 89 IROC, 87 Cadillac
Engine: 355 SBC
Transmission: T56
Axle/Gears: Currie 9" 4.57 gear, detroit locker

Re: Speed engineering ls swap headers

Quote:
Originally Posted by 92BLKL98 View Post
Looks much better than the RI headers though.
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.
robguitargod1 is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 07:33 PM   #10
Senior Member
 
92BLKL98's Avatar
 
Join Date: Apr 2001
Location: Powder Springs, Georgia, USA
Posts: 732
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23


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.
Attached Thumbnails
Speed engineering ls swap headers-_dsc0046_zps9r6infkb1.jpg  

Last edited by 92BLKL98; 04-13-2017 at 07:41 PM.
92BLKL98 is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 08:54 PM   #11
Junior Member
 
Join Date: Jul 2015
Location: Central Illinois
Posts: 79
Car: 1985 Camaro
Engine: 355
Transmission: 700R4

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.
Streetstuff is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 10:41 PM   #12
Member
iTrader: (3)
 
Join Date: May 2004
Location: KY
Posts: 120
Car: 92 Vert


Re: Speed engineering ls swap headers

Quote:
Originally Posted by Streetstuff View Post
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.
https://www.speed-engineering.com/ls...2-ls3-ls6.html
looks like them herel

Last edited by 86gn; 04-13-2017 at 10:43 PM. Reason: wrong link
86gn is offline vBGarage Page   Reply With Quote
Old 04-13-2017, 10:46 PM   #13
Junior Member
 
Join Date: Jul 2015
Location: Central Illinois
Posts: 79
Car: 1985 Camaro
Engine: 355
Transmission: 700R4

Re: Speed engineering ls swap headers

I thought that was it, but I wasn't sure.
Streetstuff is offline vBGarage Page   Reply With Quote
Old 04-21-2017, 03:06 AM   #14
Junior Member
 
t_raven's Avatar
 
Join Date: Feb 2008
Location: Idaho Falls, Id
Posts: 84
Car: lots of Firebirds!
Engine: LS1s, 455
Transmission: t56s all around! lol

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.
t_raven is offline vBGarage Page   Reply With Quote
Old 04-30-2017, 01:56 PM   #15
Junior Member
 
Join Date: Jul 2014
Posts: 42

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.
Black18Ice is offline vBGarage Page   Reply With Quote
Old 04-30-2017, 02:26 PM   #16
Supreme Member
Thread Starter
iTrader: (25)
 
Twin_Turbo's Avatar
 
Join Date: Jun 2000
Location: Enschede, Netherlands
Posts: 5,124
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27


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
Twin_Turbo is offline vBGarage Page   Reply With Quote
Old 04-30-2017, 02:27 PM   #17
Junior Member
 
Join Date: Jul 2014
Posts: 42

Re: Speed engineering ls swap headers

So they measured about 2" or so then? Thanks.
Black18Ice is offline vBGarage Page   Reply With Quote
Old 04-30-2017, 03:38 PM   #18
Supreme Member
Thread Starter
iTrader: (25)
 
Twin_Turbo's Avatar
 
Join Date: Jun 2000
Location: Enschede, Netherlands
Posts: 5,124
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27


Re: Speed engineering ls swap headers

No they measured 1-7/8. That's OD not ID
Twin_Turbo is offline vBGarage Page   Reply With Quote
Old 05-02-2017, 09:09 PM   #19
Senior Member
iTrader: (5)
 
jer4251's Avatar
 
Join Date: Sep 2001
Location: Richmond Hill, GA
Posts: 620
Car: 13 ZL1, 90 Iroc, 00 Z28, 14 Denali
Engine: LSA, LB9, LM7, L86
Transmission: M6, A4, A4, A6
Axle/Gears: 3.73, 2.73, 3.23, 3.42


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.
jer4251 is offline vBGarage Page   Reply With Quote
Old 05-08-2017, 02:50 PM   #20
Junior Member
 
Join Date: Jul 2015
Location: Central Illinois
Posts: 79
Car: 1985 Camaro
Engine: 355
Transmission: 700R4

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.
Streetstuff is offline vBGarage Page   Reply With Quote
Old 07-19-2017, 11:52 PM   #21
Junior Member
 
t_raven's Avatar
 
Join Date: Feb 2008
Location: Idaho Falls, Id
Posts: 84
Car: lots of Firebirds!
Engine: LS1s, 455
Transmission: t56s all around! lol

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.



t_raven is offline vBGarage Page   Reply With Quote
Old Yesterday, 08:52 AM   #22
Member
 
Join Date: Feb 2006
Location: Myrtle Beach SC
Posts: 157
Car: 1992 Pontiac Trans Am Convertible
Engine: 6.0l LQ4
Transmission: 4l80E
Axle/Gears: 3.27 LS1 rear


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

Quote:
Originally Posted by t_raven View Post
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.



Dreambird is offline vBGarage Page   Reply With Quote
Old Yesterday, 09:17 AM   #23
Supreme Member
iTrader: (28)
 
Join Date: Jul 2000
Location: Fort Myers, FL
Posts: 1,373
Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73


Re: Speed engineering ls swap headers

Quote:
Originally Posted by Dreambird View Post
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
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.
Jaysz28 is offline vBGarage Page   Reply With Quote
Old Yesterday, 09:26 AM   #24
Member
 
Join Date: Feb 2006
Location: Myrtle Beach SC
Posts: 157
Car: 1992 Pontiac Trans Am Convertible
Engine: 6.0l LQ4
Transmission: 4l80E
Axle/Gears: 3.27 LS1 rear


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.
Quote:
Originally Posted by Jaysz28 View Post
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.
Dreambird is offline vBGarage Page   Reply With Quote
Old Yesterday, 12:24 PM   #25
Supreme Member
iTrader: (28)
 
Join Date: Jul 2000
Location: Fort Myers, FL
Posts: 1,373
Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73


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???
Jaysz28 is offline vBGarage Page   Reply With Quote
Old Yesterday, 12:43 PM   #26
Member
 
Join Date: Feb 2006
Location: Myrtle Beach SC
Posts: 157
Car: 1992 Pontiac Trans Am Convertible
Engine: 6.0l LQ4
Transmission: 4l80E
Axle/Gears: 3.27 LS1 rear


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.
Quote:
Originally Posted by Jaysz28 View Post
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???
Dreambird is offline vBGarage Page   Reply With Quote
Old Yesterday, 10:42 PM   #27
Junior Member
 
t_raven's Avatar
 
Join Date: Feb 2008
Location: Idaho Falls, Id
Posts: 84
Car: lots of Firebirds!
Engine: LS1s, 455
Transmission: t56s all around! lol

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.

t_raven is offline vBGarage Page   Reply With Quote
Old Yesterday, 10:48 PM   #28
Junior Member
 
t_raven's Avatar
 
Join Date: Feb 2008
Location: Idaho Falls, Id
Posts: 84
Car: lots of Firebirds!
Engine: LS1s, 455
Transmission: t56s all around! lol

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

t_raven is offline vBGarage Page   Reply With Quote
Reply


Go Back   Third Generation F-Body Message Boards >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 05:44 AM.


All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: