Anyone Running Speed Engineering LSx Headers... - Third Generation F-Body Message Boards


LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Anyone Running Speed Engineering LSx Headers...

Reply
 
Thread Tools Search this Thread
Old 03-23-2017, 08:40 AM   #1
Junior Member
Thread Starter
 
Join Date: Jul 2004
Location: St Catharines
Posts: 76
Car: 1987 IROC
Engine: LS1
Transmission: T-56
Axle/Gears: 3:42, 10 Bolt LT1


Anyone Running Speed Engineering LSx Headers...

Currently have Hawks Stainless Works 1 3/4" - 2.5" collector headers. I feel these are going to choke out a 403 LS2 I'm building up for the car.

I've already blew the budget on the build and don't have another $1000 to drop on a bigger set of headers.

Came across some 1 7/8" 3" collector headers from Speed Engineering. I know they won't have the same quality as the Stainless Works ones but the price is right ($300).

Does anyone have real world experience with these headers? How was the fit and finish...

Thanks

https://www.speed-engineering.com/ls...2-ls3-ls6.html
thunder57 is offline   Reply With Quote
Old 03-23-2017, 10:38 AM   #2
Moderator
iTrader: (14)
 
five7kid's Avatar
 
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,110
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89


Interesting. First I recall seeing them.

You are probably correct that 1-3/4" primaries will choke a 403. I believe that's what's happening to me in my '57 with 403, L92 heads, healthy cam, and 1-3/4" primaries - even with dual 3" with X-pipe behind them.

I would trust the Holley-Hooker BlackHeart headers to be best quality, but like you say, they're $1k.
five7kid is offline   Reply With Quote
Old 03-23-2017, 06:28 PM   #3
Senior Member
 
92BLKL98's Avatar
 
Join Date: Apr 2001
Location: Powder Springs, Georgia, USA
Posts: 740
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23


Re: Anyone Running Speed Engineering LSx Headers...

I hope the fitment would be better than the Racing Innovation headers. I bought a set of these and talk about bad fitment, the collectors are touching on the right frame rail and 3/8" on the left rail, so no room at all for wiggling around for clearance. Anyone use the Speed Engineering headers in a build yet?
92BLKL98 is offline   Reply With Quote
Old 03-23-2017, 10:56 PM   #4
Junior Member
Thread Starter
 
Join Date: Jul 2004
Location: St Catharines
Posts: 76
Car: 1987 IROC
Engine: LS1
Transmission: T-56
Axle/Gears: 3:42, 10 Bolt LT1


Re: Anyone Running Speed Engineering LSx Headers...

What size cam/what kind of power are you putting down?

I will be running stock LSA heads and going with the BTR stage 3 stroker cam.

I have the BlackHeart exhaust that I modified to fit the 2.5" collectors.

.. I'd be concerned the Hooker BlackHeart headers wouldn't work with the Spohn engine mounts and my custom trans member. Too expensive for me to take the risk. haha

I'd say the price is almost right for me to get the Speed Engineering headers to see if they'll work. Definitely worth my time and effort if they work.



Quote:
Originally Posted by five7kid View Post
Interesting. First I recall seeing them.

You are probably correct that 1-3/4" primaries will choke a 403. I believe that's what's happening to me in my '57 with 403, L92 heads, healthy cam, and 1-3/4" primaries - even with dual 3" with X-pipe behind them.

I would trust the Holley-Hooker BlackHeart headers to be best quality, but like you say, they're $1k.
thunder57 is offline   Reply With Quote
Old 03-24-2017, 02:05 AM   #5
Senior Member
 
92BLKL98's Avatar
 
Join Date: Apr 2001
Location: Powder Springs, Georgia, USA
Posts: 740
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23


Re: Anyone Running Speed Engineering LSx Headers...

I'd like to see pics of them installed.
92BLKL98 is offline   Reply With Quote
Old 03-24-2017, 08:00 PM   #6
Supreme Member
iTrader: (5)
 
Bullydawg's Avatar
 
Join Date: Nov 2006
Location: Chico, Ca/ England
Posts: 3,653
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9 Bolt 3.27


Re: Anyone Running Speed Engineering LSx Headers...

I too am interested. I am about to pull the trigger on the Racing Innovation longtubes for my Ls1. I read that the Hawks y-pipe will fit them as well. I wonder if the same y-pipe would fit these...
Bullydawg is offline   Reply With Quote
Old 03-24-2017, 09:36 PM   #7
Senior Member
 
92BLKL98's Avatar
 
Join Date: Apr 2001
Location: Powder Springs, Georgia, USA
Posts: 740
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23


Re: Anyone Running Speed Engineering LSx Headers...

Quote:
Originally Posted by Bullydawg View Post
I too am interested. I am about to pull the trigger on the Racing Innovation longtubes for my Ls1. I read that the Hawks y-pipe will fit them as well. I wonder if the same y-pipe would fit these...
Re-read my post 3. You can buy my RI headers to try if you want PM me.
92BLKL98 is offline   Reply With Quote
Old 03-24-2017, 09:57 PM   #8
Junior Member
Thread Starter
 
Join Date: Jul 2004
Location: St Catharines
Posts: 76
Car: 1987 IROC
Engine: LS1
Transmission: T-56
Axle/Gears: 3:42, 10 Bolt LT1


Re: Anyone Running Speed Engineering LSx Headers...

I emailed Speed Engineering about the headers. I inquired about pictures and asked about what transmission they were designed around. This was the reply:

Thank you for your interest in our products. Unfortunately we donít have any install pictures, there might be some on the forums.

Thanks
Sam

Speed Engineering
4972 East Lansing Way
Fresno, CA. 93727
WWW.SPEED-ENGINEERING.COM
thunder57 is offline   Reply With Quote
Old 03-25-2017, 08:47 AM   #9
Member
iTrader: (1)
 
MustangEater82's Avatar
 
Join Date: Feb 2009
Location: Charleston, SC
Posts: 130

Re: Anyone Running Speed Engineering LSx Headers...

I bought a set not installed but decent enough quality looking at the. My research had shown they fit and the hawks y-pipe works.
MustangEater82 is offline   Reply With Quote
Old 03-25-2017, 09:51 PM   #10
Supreme Member
iTrader: (5)
 
Bullydawg's Avatar
 
Join Date: Nov 2006
Location: Chico, Ca/ England
Posts: 3,653
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9 Bolt 3.27


Re: Anyone Running Speed Engineering LSx Headers...

I just bought a set of these... I plan to buy a set of Racing Innovation ones as well and I'll post up a comparison. I should be reinstalling my engine in 3 weeks and I already have the Hawks Y-Pipe, so I will post an update.
Bullydawg is offline   Reply With Quote
Old 03-26-2017, 12:28 PM   #11
Senior Member
iTrader: (1)
 
Join Date: Jun 2009
Location: N.E. Ohio
Posts: 564
Car: 87 Gta
Engine: 5.3
Transmission: 4l60e
Axle/Gears: 3.42

Re: Anyone Running Speed Engineering LSx Headers...

I'm definitely interested in this as I have the RI headers. Quality is pretty decent but they basically rub the rails underneath.
cypris09 is offline   Reply With Quote
Old 03-30-2017, 08:54 PM   #12
Supreme Member
iTrader: (5)
 
Bullydawg's Avatar
 
Join Date: Nov 2006
Location: Chico, Ca/ England
Posts: 3,653
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9 Bolt 3.27


Re: Anyone Running Speed Engineering LSx Headers...

I got them in and my first impression is they look REALLY good. Came with header bolts, thick crunch type gaskets, and thin metal header gaskets. Welds look really well done and the inner collector looks to have a flap wheel in it to smooth out the welds. The cone welded into the collector looks really well done as well. I should be installing the motor in 3 weeks, so I will update with fitment.

I'll try to post pictures of them soon. Just really busy with work full time, 2 classes, working on the car, preparing to go to school full time in a few months...
Bullydawg is offline   Reply With Quote
Old 04-09-2017, 10:53 PM   #13
Member
iTrader: (1)
 
utfan01ss's Avatar
 
Join Date: May 2010
Location: Chickamauga, GA
Posts: 426
Car: 89 IROC-Z
Engine: 355ci SBC
Transmission: TH700R4 - 2500 stall
Axle/Gears: 3.70 9 bolt

Re: Anyone Running Speed Engineering LSx Headers...

I have the racing innovation long tubes.. absolute garbage. The hit the frame rail on the passenger side in two places and vibrate. The drivers side is practically touching my fuel and brake lines, which are wrapped btw. If they brought the collectors in another 1/2 inch they would be great. I'm hoping the Speed Engineering set is better, if so then I'm going to order a set. Tired of hearing my headers vibrate against the frame rail. This big cam doesn't help matters either. I've tried bending these with no luck. Stainless seems to be hard to work with, even when warmed up.
utfan01ss is offline   Reply With Quote
Old 05-01-2017, 08:45 AM   #14
Junior Member
 
Join Date: Apr 2006
Location: Boston
Posts: 12
Car: 1987 Iroc-Z
Engine: 305 TPI
Transmission: T-5


Re: Anyone Running Speed Engineering LSx Headers...

I just finished installing a pair of speed engineering headers on my 87 iroc and was very happy with the fitment. I put the pass. side header on first and noticed it was very tight to the k member so I went ahead and bought new poly motor mounts to replace the old stock mounts and now the clearance is much better plus less movement while running. (using hawks mount brackets) There was plenty of space between the frame rails. the drivers side o2 sensor is a little close to the transmission but once screwed in was not an issue. I was very impressed for only $300. There is another thread that someone has posted pictures of their install of these. Install was pretty straight forward, I had to remove the pass. side valve cover and on the driver side I undid the mount and raised the engine for clearance. (both went in from the top)
orangeIroc is offline   Reply With Quote
Old 05-20-2017, 10:51 PM   #15
Junior Member
Thread Starter
 
Join Date: Jul 2004
Location: St Catharines
Posts: 76
Car: 1987 IROC
Engine: LS1
Transmission: T-56
Axle/Gears: 3:42, 10 Bolt LT1


Re: Anyone Running Speed Engineering LSx Headers...

Thanks for the help. I'll be placing my order soon. I'll get back on how well they mount up to the Hooker true dual exhaust setup
thunder57 is offline   Reply With Quote
Old 05-25-2017, 06:38 AM   #16
Member
 
$750 L98's Avatar
 
Join Date: Aug 2005
Location: Round Rock
Posts: 434
Car: 1989 Formula 350 LSX
Engine: 5.3, 234/228 cam
Transmission: Stage II 4L60e, Vigilante 3200
Axle/Gears: 3.42


Re: Anyone Running Speed Engineering LSx Headers...

Does anyone have pictures of the Speed Engineering headers installed? My Racing Innovation headers fit, but barely. I've had them out twice now trying to reroute the fuel and brake lines on the driver's side as the header touches. I'm going to have to make them work, but if the Speed Engineering headers fit, I'll be replacing the RI headers.
$750 L98 is offline   Reply With Quote
Old 06-15-2017, 10:14 PM   #17
Junior Member
 
Join Date: Dec 2015
Location: Myrtle Beach SC
Posts: 11
Car: 84 Trans Am
Engine: 406
Transmission: T5
Axle/Gears: 3.73

Re: Anyone Running Speed Engineering LSx Headers...

any updates on this? I'm very interested to hear if the Hawks Y pipe works and/or if hooker black heart works as well?
slow84ta2 is offline   Reply With Quote
Old 06-15-2017, 11:53 PM   #18
Supreme Member
iTrader: (5)
 
Bullydawg's Avatar
 
Join Date: Nov 2006
Location: Chico, Ca/ England
Posts: 3,653
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9 Bolt 3.27


Re: Anyone Running Speed Engineering LSx Headers...

The Hawks Y-Pipe DOES NOT FIT. I personally tried and wasted $350... ended up having them cut up and paid 350 to have a custom y pipe made.
Bullydawg is offline   Reply With Quote
Old 06-16-2017, 06:26 PM   #19
Member
 
$750 L98's Avatar
 
Join Date: Aug 2005
Location: Round Rock
Posts: 434
Car: 1989 Formula 350 LSX
Engine: 5.3, 234/228 cam
Transmission: Stage II 4L60e, Vigilante 3200
Axle/Gears: 3.42


Re: Anyone Running Speed Engineering LSx Headers...

I was unable to get the Y pipe to fit well enough to use either. It hits the passenger subframe, a bolt on the tailshaft, trans pan on 4L60E, and runs into the floor near the front of the driveshaft. That is with Hawk mounts and the Hawk double hump trans crossmember. I used RI headers though.

If I was doing the exhaust system again, I'd go with Hooker cast manifolds and make my own Y pipe.
$750 L98 is offline   Reply With Quote
Old 06-19-2017, 02:10 AM   #20
On Probation
iTrader: (9)
 
TPI TERR's Avatar
 
Join Date: Feb 2005
Location: So Cal
Posts: 2,042
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42


Re: Anyone Running Speed Engineering LSx Headers...

id like to know as well on fitment. ive seen videos on one install but would like to see how fitment is with the transmission mounte with the oduble hump tran member. im assuming there is more clearance near the tunnel/ frame rail on pass side but this most likely just moves the header collector more inward towards the tranmsission. ive have used racing innovations on about 5 swaps, each car varies, but on a 4l60e set up the racing innovation headers are already way too close to the transmission (imo) . pics would be great for future reference
TPI TERR is offline   Reply With Quote
Old 06-19-2017, 06:35 PM   #21
Supreme Member
iTrader: (5)
 
Bullydawg's Avatar
 
Join Date: Nov 2006
Location: Chico, Ca/ England
Posts: 3,653
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9 Bolt 3.27


Re: Anyone Running Speed Engineering LSx Headers...

Here is the only one I have on my phone. I can take more if needed.
Attached Thumbnails
Anyone Running Speed Engineering LSx Headers...-img_1575.jpg  
Bullydawg is offline   Reply With Quote
Old 06-21-2017, 03:57 AM   #22
Member
 
$750 L98's Avatar
 
Join Date: Aug 2005
Location: Round Rock
Posts: 434
Car: 1989 Formula 350 LSX
Engine: 5.3, 234/228 cam
Transmission: Stage II 4L60e, Vigilante 3200
Axle/Gears: 3.42


Re: Anyone Running Speed Engineering LSx Headers...

This is how mine ended up with the RI headers and Hawk's Y pipe. The RI header fit is really disappointing. I have plenty of room between them and the 4L60E, but they are so close to the subframe they rub the fuel and brake lines when the Y pipe is installed. I have about 1/8" clearance between the subframe on the passenger side. You can see where the Y pipe hits the trans pan. Clearance is decent with the Hawk's trans crossmember, but overall, just about nothing clears. I'm going to gamble on the Speed Engineering headers and see if it helps the Hawk's Y pipe fit better.




$750 L98 is offline   Reply With Quote
Old 07-05-2017, 09:49 PM   #23
Junior Member
 
RT66ProTouring's Avatar
 
Join Date: Mar 2016
Location: Oklahoma
Posts: 26
Car: 1991 Camaro
Engine: 5.3L LS

Re: Anyone Running Speed Engineering LSx Headers...

Quote:
Originally Posted by Bullydawg View Post
The Hawks Y-Pipe DOES NOT FIT. I personally tried and wasted $350... ended up having them cut up and paid 350 to have a custom y pipe made.
Do you have any pics of how far off the Hawks y-pipe was? or maybe just a description?
RT66ProTouring is offline   Reply With Quote
Old 07-06-2017, 10:10 AM   #24
Supreme Member
iTrader: (5)
 
Bullydawg's Avatar
 
Join Date: Nov 2006
Location: Chico, Ca/ England
Posts: 3,653
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9 Bolt 3.27


Re: Anyone Running Speed Engineering LSx Headers...

It would kinda go together, but the ground clearance was just horrible and the it hit the driveshaft. Don't waste your time...
Bullydawg is offline   Reply With Quote
Old 07-06-2017, 02:42 PM   #25
Supreme Member
iTrader: (14)
 
customblackbird's Avatar
 
Join Date: Feb 2007
Location: northern New Jersey
Posts: 4,166
Car: 87 TA clone
Engine: supercharged 5.3 LS
Transmission: bullet proof 2004R
Axle/Gears: ford 8.8, 3.55 gears


Re: Anyone Running Speed Engineering LSx Headers...

i didnt have any issues with my RI headers on my 5.3 swap with supercharger. I cleared both subframes. I did have leaks when I ran the MR gasket ultra header gaskets (didnt want to uset he graphite that came with them) and I was told the Mrgaskets would be better. Got leaks so i went with the remflex... $25 ish a pop but those things are beasts at sealing. They crush like 50% and never have to be retq'd. No leaks now

I also got my RI headers ceramic coated when I put them back in... no complaints from me. The speed engineering look nicer in the collector area for sure. But if it works it works and the speed engineering wasn't available 2 years ago when I purchased the RI's.
customblackbird is offline   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


Advertising
Featured Sponsors
Vendor Directory

1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 05:14 PM.


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. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: