Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Speed Engineering Race Version Headers Now Available!!

Thread Tools
 
Search this Thread
 
Old Jan 9, 2018 | 09:47 AM
  #1321  
Speed Engineering's Avatar
Thread Starter
Sponsor
iTrader: (35)
 
Joined: Feb 2004
Posts: 3,111
Likes: 4
From: California
Default

Thank you for the pictures and business.. Clean setup.

Sean
Reply
Old Aug 14, 2018 | 05:23 PM
  #1322  
dobsogj's Avatar
Teching In
 
Joined: Jun 2007
Posts: 11
Likes: 0
Default

Sean. I know this is a tough one to answer. I’m ls swapping my 2003 s10 crew cab. It was 4wd but I’ve removed all of the 4wd stuff, and converting to 2wd. I have been looking for some headers to accommodate my swap, and read this thread, because I’m considering the F body headers. I know whatever headers I go with will need to be kmodified and I’m totally ok with that. It’s still easier than building from scratch. A ways back in this thread a guy was asking about a S10 project and you mentioned that your early C10 swap headers were the tightest fit to the block. Are there any you sell that fit inside the S10 frame? Again, I’m ok with modifying, but with some direction, I hope to keep that to a minimum. Any help or guidance is appreciated. Thanks, George.
Reply
Old Aug 14, 2018 | 11:01 PM
  #1323  
bammax's Avatar
TECH Resident
 
Joined: Jul 2007
Posts: 967
Likes: 53
From: Winter Haven FL
Default

Originally Posted by dobsogj
Sean. I know this is a tough one to answer. I’m ls swapping my 2003 s10 crew cab. It was 4wd but I’ve removed all of the 4wd stuff, and converting to 2wd. I have been looking for some headers to accommodate my swap, and read this thread, because I’m considering the F body headers. I know whatever headers I go with will need to be kmodified and I’m totally ok with that. It’s still easier than building from scratch. A ways back in this thread a guy was asking about a S10 project and you mentioned that your early C10 swap headers were the tightest fit to the block. Are there any you sell that fit inside the S10 frame? Again, I’m ok with modifying, but with some direction, I hope to keep that to a minimum. Any help or guidance is appreciated. Thanks, George.
https://www.speed-engineering.com/ls-conversions-swaps/exhaust/ls-conversions-swap-headers/ls-swap-s10-conversion-headers-ls1-ls2-ls3-ls6-ls-engines-truck-suv.html

You may be better off starting with those. Just have to figure out if the front frame rails are wide enough.
Reply
Old Aug 15, 2018 | 09:38 AM
  #1324  
dobsogj's Avatar
Teching In
 
Joined: Jun 2007
Posts: 11
Likes: 0
Default

Originally Posted by bammax
https://www.speed-engineering.com/ls-conversions-swaps/exhaust/ls-conversions-swap-headers/ls-swap-s10-conversion-headers-ls1-ls2-ls3-ls6-ls-engines-truck-suv.html

You may be better off starting with those. Just have to figure out if the front frame rails are wide enough.
i converted to rack and pinion steering. The steering shaft now takes a different path and will hit the header. I’d buy the stainless works longtubes for S10s, but I’d have to modify them, because of the R&P steering swap. I’m definitely not opposed to modifying, but I really don’t want to modify a set of $1200 headers. If I can find some that fit between the frame rails I will reroute the tubes I need to, to clear the steering.
Reply
Old Aug 15, 2018 | 10:03 AM
  #1325  
Speed Engineering's Avatar
Thread Starter
Sponsor
iTrader: (35)
 
Joined: Feb 2004
Posts: 3,111
Likes: 4
From: California
Default

If your looking for a longtube I would recommend our C10 swap headers. They are tucked in even tighter than some of our shorty headers, and will give you the best possible frame clearance.

Thanks
Sean
Reply
Old Aug 15, 2018 | 12:39 PM
  #1326  
dobsogj's Avatar
Teching In
 
Joined: Jun 2007
Posts: 11
Likes: 0
Default

Originally Posted by Speed Engineering
If your looking for a longtube I would recommend our C10 swap headers. They are tucked in even tighter than some of our shorty headers, and will give you the best possible frame clearance.

Thanks
Sean

Thanks Sean I will give them a try. Do you have any rough dimensions? Mainly the height. Just making sure they won’t hang down too far below the frame. You do mean the part # 25-1026 correct?
These?
https://www.speed-engineering.com/re...1/#review-form

thanks again
Reply
Old Aug 16, 2018 | 10:14 AM
  #1327  
Speed Engineering's Avatar
Thread Starter
Sponsor
iTrader: (35)
 
Joined: Feb 2004
Posts: 3,111
Likes: 4
From: California
Default

Yes, either 25-1025 or 25-1026. They are 16" from the center of the bolt hole down to the bottom of the collector.

Thanks
Sean
Reply
Old Aug 16, 2018 | 04:39 PM
  #1328  
dobsogj's Avatar
Teching In
 
Joined: Jun 2007
Posts: 11
Likes: 0
Default

Originally Posted by Speed Engineering
Yes, either 25-1025 or 25-1026. They are 16" from the center of the bolt hole down to the bottom of the collector.

Thanks
Sean
thanks. Ill get some ordered and see if I can make them
work. Worst case I’ll resell them if they won’t. Appreciate the help
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 17, 2018 | 09:33 AM
  #1329  
Speed Engineering's Avatar
Thread Starter
Sponsor
iTrader: (35)
 
Joined: Feb 2004
Posts: 3,111
Likes: 4
From: California
Default

Sounds good. Thank you..

Sean
Reply
Old Aug 20, 2018 | 09:57 AM
  #1330  
dobsogj's Avatar
Teching In
 
Joined: Jun 2007
Posts: 11
Likes: 0
Default

Originally Posted by Speed Engineering
Sounds good. Thank you..

Sean
one last question. I’m about to order. I really want the 1 7/8” over the 1 3/4”. Do the 1 3/4” fit much if any tighter than the 1 7/8”? I read in this post where you said there was almost no difference on the Fbody headers. Does the same apply to the c10 headers? Thanks
Reply
Old Aug 20, 2018 | 10:34 AM
  #1331  
Speed Engineering's Avatar
Thread Starter
Sponsor
iTrader: (35)
 
Joined: Feb 2004
Posts: 3,111
Likes: 4
From: California
Default

They are almost identical yes.

Thanks
Sean
Reply
Old Aug 20, 2018 | 10:56 AM
  #1332  
dobsogj's Avatar
Teching In
 
Joined: Jun 2007
Posts: 11
Likes: 0
Default

Originally Posted by Speed Engineering
They are almost identical yes.

Thanks
Sean
thanks. Ordering today
Reply
Old Aug 20, 2018 | 02:38 PM
  #1333  
Rick Dorion's Avatar
On The Tree
15 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Mar 2007
Posts: 140
Likes: 44
From: Lyonsville, NY
Default

I have a 67 Bel Air that I'd like to use your longtube headers on. This is a 5.3. Any possibilities. Thanks a lot.
Reply
Old Aug 20, 2018 | 03:13 PM
  #1334  
Z28tek's Avatar
On The Tree
 
Joined: Feb 2013
Posts: 173
Likes: 12
Default

Will these passion emissions in NY if tuned properly with the O2's hooked up?
Reply
Old Aug 20, 2018 | 07:18 PM
  #1335  
bammax's Avatar
TECH Resident
 
Joined: Jul 2007
Posts: 967
Likes: 53
From: Winter Haven FL
Default

Originally Posted by Z28tek
Will these passion emissions in NY if tuned properly with the O2's hooked up?
Nope. You're deleting emissions equipment and also moving the cats to a different location. You can find headers with the emissions hookups but you still may get bit by the cat issue.
Reply
Old Aug 22, 2018 | 03:19 PM
  #1336  
Z28tek's Avatar
On The Tree
 
Joined: Feb 2013
Posts: 173
Likes: 12
Default

God damnit!
Reply
Old Aug 25, 2018 | 12:43 PM
  #1337  
dobsogj's Avatar
Teching In
 
Joined: Jun 2007
Posts: 11
Likes: 0
Default

Originally Posted by Speed Engineering
Sounds good. Thank you..

Sean
The C10 headers just showed up. Extremely nice product especially for the money. Unfortunately they aren’t even close to fitting. Not your fault at all. I took a chance and it didn’t pan out. I’m pretty bummed. I knew they wouldn’t be a fit but I hoped they’re be tight enough that I could modify them. What’s a little frustrating is that i was expecting they were going to be a tight fit. In my opinion they really aren’t a tight fit at all. Especially on the pass side. I know you cant confirm that any of your headers fit any other application other than what they were intended for. For a customer to expect them to would be stupid. I’m just a little disappointed because I was expecting them to be a little tighter fitting based on your description. Its a nice product and I’d buy from you again if I were looking for headers for a specific vehicle that you made them for. I will just try to sell these. Probably for a loss.

Last edited by dobsogj; Aug 25, 2018 at 12:52 PM. Reason: Text
Reply
Old Aug 27, 2018 | 09:42 AM
  #1338  
Speed Engineering's Avatar
Thread Starter
Sponsor
iTrader: (35)
 
Joined: Feb 2004
Posts: 3,111
Likes: 4
From: California
Default

Sorry, to hear. Your more than welcome to exchange your longtubes for our shorty swap headers if you choose. Our shorties do stick out a little further width wise however.

Thanks
Sean
Reply
Old Mar 29, 2019 | 05:41 PM
  #1339  
t_raven's Avatar
TECH Regular
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (12)
 
Joined: Mar 2008
Posts: 499
Likes: 1
From: Idaho
Default

I put a set of the 2nd gen/A body/c10 headers on my 69 Tempest. Just wanted to give some feedback. They hang lower than my 3rd and 4th gen set. I had to raise the front of the car a couple inches. I'm using UMI swap mounts, so Idk, maybe there are mounts that set the engine higher. If possible on future runs to tuck them up higher, I'd buy at least 2 sets. I might put these on my c10 and use shorties for this car so I can lower it again.

Name:  Gh2maEy.jpg
Views: 194
Size:  398.9 KB


I bought another set of your 3rd gen headers to see if I could make them fit the A body. The passenger side hit the frame and the driver's side hit the steering shaft, so no dice there. I was planning to try them on my K15 GMC though if they wouldn't fit the A body. I made them work with a little frame clearance, and re-angling the passenger side collector (Ignore my welds, I'm having a heck of a time figuring out why they are so gray)

With poly mounts and prying the engine every way I can, I can't get them to touch the frame.

Speed Engineering Race Version Headers Now Available!!-x58kz48.jpg

Speed Engineering Race Version Headers Now Available!!-ncl9mfn.jpg

Speed Engineering Race Version Headers Now Available!!-fahbpkv.jpg

Speed Engineering Race Version Headers Now Available!!-y6qpkri.jpg
Reply
Old Mar 29, 2019 | 09:42 PM
  #1340  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

One thing that might help is to get rid of the 80# of Bondo you must have in the front fenders. Those cracks are VERY incriminating...
Reply



All times are GMT -5. The time now is 09:28 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE