The LS1 swap headers are done!!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jamie @ Doug Thorley · 04-11-2008, 04:55 PM

The part number for these is thy324y-c. (pic #2)

The price with your member discount is $528 ceramic coated

. Mention this board and your user name to Nick Thompson (sales) @ 951-739-5900.

The headers come with all necessary bolts, gaskets and reducers.

All headers are pre-polished before coating.The standard finish is ceramic coating.

All headers are made from 14ga. tubing and 3/8" flanges.

Every header is pressure tested on site for leaks.

These headers were developed using the Classic performance products motor mount/cross member system but they have been tested on a trucks equipped with Early classic enterprises (Hart_rod) as well as home made motor mounts (Mike @ meshwerks).

The headers are designed to work with both 4L60 and 4L80 transmissions.

You will need to purchase a flexible engine oil dipstick such as the Lokar ED-5800 or equavalent.

In addition, you will need to purchase a good set of plug wires. We used the MSD adjustables but there are other less expensive alternatives. (pic #1)

We think the headers will also work on the 73-87 trucks and a test fit is on the way to verify that.

It's been a long and winding road to get to this point but this is what true R&D is about and I think we nailed it. Having said that, I would also like to thank the the following members for all the hard work and information they provided. Their commitment to our hobby is what makes cars and trucks fun and I could not have done this without you guys.

Rob Hartley aka Hart_Rod
Mike and kevin sheidle aka Meshwerks
John aka pcmcobra

And everyone else that sent me pics...

Dave Cary aka 68custom
John Stevens

I may have forgotten about a few of you but you know who you are and You guys rock

.

If you guys/gals have questions about the design aspects of this header please call me @ (951) 371-1744 and I will be happy to answer any questions you my have.

Thanks,
Jamie Joyce
Design engineer, Doug Thorley headers

Deuce · 04-11-2008, 05:22 PM

Quote:

Originally Posted by Jamie @ Doug Thorley

The price with your member discount is $528

PICS!!!!!!!!!!!!!!

Do they hang below the frame???

What motor mounts do they require???

Do you ship to Canada??

Jamie @ Doug Thorley · 04-11-2008, 06:27 PM

Quote:

Originally Posted by Deuce

PICS!!!!!!!!!!!!!!

Do they hang below the frame???

What motor mounts do they require???

Do you ship to Canada??

Deuce, here are pics of the headers on Hart_rod's truck. Look closely at pic #3, this is with the headers installed

. (pics 3 & 4)

They will work with ECE,CPP and they were tried on a truck with homemade mounts (meshwerks). It really comes down to how you placed the engine in the truck. (pics 1 & 2 w/ cpp mounts)

Yes, we do ship to Canada.

Jamie

*Billla* · 04-11-2008, 06:36 PM

That is just beautiful work!

Jamie @ Doug Thorley · 04-11-2008, 06:42 PM

Quote:

Originally Posted by Billla

That is just beautiful work!

Thank you.

My wife says I talk about welding and headers in my sleep

**lts70** · 04-11-2008, 06:55 PM

My wife has to hear me build trucks in my sleep also. Or sometimes it is the building project I am on at the time. Sweet headers, they look great.

**68GMCCustom** · 04-11-2008, 07:38 PM

Very nice!

**stllookn** · 04-11-2008, 10:10 PM

Sweeet!!!! Do you have any performance data on those compared to stock or others????

shifty · 04-11-2008, 11:01 PM

Really happy to get info on this. I had PM'ed a couple of weeks ago, but never got a response.

Thanks for the info, will definitely be looking into these. Guess I will need to delete my rear O² sensor now

Jamie @ Doug Thorley · 04-12-2008, 03:40 PM

Quote:

Originally Posted by stllookn

Sweeet!!!! Do you have any performance data on those compared to stock or others????

The truck I did was not a runner yet but I have numbers on another ls based car with tri-y's

....

http://s243.photobucket.com/albums/f...ETTETHY329.jpg

I know this is kinda apples to oranges but it gives you an idea of how the ls engines react to tri-y's. This car was a different beast when we were done with it

.

Jamie

Jamie @ Doug Thorley · 04-12-2008, 03:46 PM

Quote:

Originally Posted by shifty

Really happy to get info on this. I had PM'ed a couple of weeks ago, but never got a response.

Thanks for the info, will definitely be looking into these. Guess I will need to delete my rear O² sensor now

Sorry Jason, I get alot of pm's and I was kinda waiting to let the cat out of the bag until I got the first run of these done.

**Hart_Rod** · 04-12-2008, 07:55 PM

Jamie thanks for letting me help out with this, it was a pleasure. The quality and fit of the headers is outstanding (I can't wait to fire the Suburban up!

). If anyone wants any more pics of the headers installed, you can check my crewcab or suburban build in my signature.

R/

**jb4short** · 04-12-2008, 08:27 PM

Awesome Rob- glad you could find something else for us to be jealous of....LOL!!!

Jamie....ever thought of some mid-lengths for lowered trucks?

**72BlckButy** · 04-12-2008, 08:52 PM

Those things sure are pretty...

Jamie @ Doug Thorley · 04-12-2008, 09:12 PM

Quote:

Originally Posted by Tri-ProAutomotive

Awesome Rob- glad you could find something else for us to be jealous of....LOL!!!

Jamie....ever thought of some mid-lengths for lowered trucks?

The gears are turning Jon. All I need now is a public out-cry demanding we make it happen. Hint, hint.

Btw, what do you think of the pics I sent you?

Jamie @ Doug Thorley · 04-12-2008, 09:14 PM

Quote:

Originally Posted by Hart_Rod

Jamie thanks for letting me help out with this, it was a pleasure. The quality and fit of the headers is outstanding (I can't wait to fire the Suburban up!

). If anyone wants any more pics of the headers installed, you can check my crewcab or suburban build in my signature.

R/

Thank you Rob. The 'Burb is freakin sweet btw. I think we are all a little envious.

**jb4short** · 04-12-2008, 09:23 PM

Quote:

Originally Posted by Jamie @ Doug Thorley

The gears are turning Jon. All I need now is a public out-cry demanding we make it happen. Hint, hint.

Btw, what do you think of the pics I sent you?

I thought they were perfect. You'd need to check the return angle on the drivers side to make sure they'd snake down through there....but the header is sharp and seems to end at about the right angle

**Wasted Income** · 04-12-2008, 10:59 PM

WOW! Those look fantastic!

1FAST68 · 04-13-2008, 01:28 AM

My thorely headers fit great. But mine did not come with bolts,gaskets or reducers.

I would post a pic but it won't let me for some reason.

http://67-72chevytrucks.com/vboard/s...d.php?t=286010

Gray Ghost · 04-13-2008, 01:55 AM

Beautiful work....I like the exit locations...nice and tucked in.

Jamie @ Doug Thorley · 04-15-2008, 06:24 PM

Quote:

Originally Posted by 1FAST68

My thorely headers fit great. But mine did not come with bolts,gaskets or reducers.

I would post a pic but it won't let me for some reason.

http://67-72chevytrucks.com/vboard/s...d.php?t=286010

You got a preproduction set and someone dropped the ball before shipping it out. Pm me your address and I will make it right. All other sets will including everything you guys will need.

Jamie

**Hart_Rod** · 04-15-2008, 07:02 PM

Quote:

Originally Posted by Jamie @ Doug Thorley

You got a preproduction set and someone dropped the ball before shipping it out. Pm me your address and I will make it right. All other sets will including everything you guys will need.

Jamie

I wish all company's had that great of customer service! BZ to DTH,

.

1FAST68 · 04-15-2008, 09:29 PM

thanks again jamie.

If he wasn't on the board helping I would have just assumed they didn't come with those parts and never asked.

**Captkaos** · 04-16-2008, 03:44 AM

I just talked to Nick and got some of these for my 73-87chevytrucks.com pickup with a 6.0L that I plan to put 2 STS turbos on...

**Yukon Jack** · 04-16-2008, 10:56 PM

I think the word "impressive" sums up your headers quite well!

04-11-2008, 06:36 PM	#4
Billla Account Suspended Join Date: Sep 2005 Location: Monroe, WA Posts: 3,826	Re: The LS1 swap headers are done!!!! That is just beautiful work!

04-11-2008, 06:55 PM	#6
lts70 1970 Daily Driver Join Date: Jun 2007 Location: Utah Posts: 666	Re: The LS1 swap headers are done!!!! My wife has to hear me build trucks in my sleep also. Or sometimes it is the building project I am on at the time. Sweet headers, they look great. __________________ It's not truly yours if you didn't build it yourself or if you don't do your own maintenance.

04-11-2008, 07:38 PM	#7
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 1,674	Re: The LS1 swap headers are done!!!! Very nice! __________________ '68 GMC Shortstep -LSx Truck upgrade in progress w/carb'd '08 LY6 6.0L crate motor w/200-4r, 3.73 posi 12 bolt, 3.5/4.5 drop '06 TrailBlazerSS - LS2 powered 13sec family car Parts for sale - good turbo350 (w/shift kit) and stock torque convertor. #2 almost new rebuilt Quadrajet, #3 Need front discs? stock '72 front spindles w/disc brakes complete to dust cap,and radiators, shrouds, and more for sale. Looking for a local '67-'68 cowl hood. Also looking to swap my short step bed for a short wide bed - in similar (good) condition

04-11-2008, 10:10 PM	#8
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,443	Re: The LS1 swap headers are done!!!! Sweeet!!!! Do you have any performance data on those compared to stock or others???? __________________ '67 C10 350/350 w/buddy buckets '68 C20 Longhorn 50th Anniversary 327/TH400 '68 C20 Longhorn 50th Anniversary 454/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '71 C20 4x4 chassis (sans cab and box...hee-hee) '68 C10 LWB w/292/4-sp/posi..."Lamont"

04-11-2008, 11:01 PM	#9
shifty Finally out of debt Join Date: Mar 2005 Location: Atlanta Posts: 12,908	Re: The LS1 swap headers are done!!!! Really happy to get info on this. I had PM'ed a couple of weeks ago, but never got a response. Thanks for the info, will definitely be looking into these. Guess I will need to delete my rear O² sensor now __________________ DO YOU KNOW '80s-'90s KAWASAKI BIKES? HELP ME!!! 1968 C10 step - LS1/T56 swap in progress! LS1 swap thread (@LS1tech): http://www.ls1tech.com/forums/showthread.php?t=370781 (please don't message me about it, thx!)

04-11-2008, 04:55 PM	#1
Jamie @ Doug Thorley Registered User Join Date: Jan 2008 Location: Corona, Ca. Posts: 86	The LS1 swap headers are done!!!! The part number for these is thy324y-c. (pic #2) The price with your member discount is $528 ceramic coated . Mention this board and your user name to Nick Thompson (sales) @ 951-739-5900. The headers come with all necessary bolts, gaskets and reducers. All headers are pre-polished before coating.The standard finish is ceramic coating. All headers are made from 14ga. tubing and 3/8" flanges. Every header is pressure tested on site for leaks. These headers were developed using the Classic performance products motor mount/cross member system but they have been tested on a trucks equipped with Early classic enterprises (Hart_rod) as well as home made motor mounts (Mike @ meshwerks). The headers are designed to work with both 4L60 and 4L80 transmissions. You will need to purchase a flexible engine oil dipstick such as the Lokar ED-5800 or equavalent. In addition, you will need to purchase a good set of plug wires. We used the MSD adjustables but there are other less expensive alternatives. (pic #1) We think the headers will also work on the 73-87 trucks and a test fit is on the way to verify that. It's been a long and winding road to get to this point but this is what true R&D is about and I think we nailed it. Having said that, I would also like to thank the the following members for all the hard work and information they provided. Their commitment to our hobby is what makes cars and trucks fun and I could not have done this without you guys. Rob Hartley aka Hart_Rod Mike and kevin sheidle aka Meshwerks John aka pcmcobra And everyone else that sent me pics... Dave Cary aka 68custom John Stevens I may have forgotten about a few of you but you know who you are and You guys rock. If you guys/gals have questions about the design aspects of this header please call me @ (951) 371-1744 and I will be happy to answer any questions you my have. Thanks, Jamie Joyce Design engineer, Doug Thorley headers Attached Images __________________ http://dougthorleyheaders.com/ Last edited by Jamie @ Doug Thorley; 04-11-2008 at 06:19 PM.

04-12-2008, 07:55 PM	#12
Hart_Rod Boomer Sooner! Join Date: Apr 2005 Location: Northwest FL Posts: 9,225	Re: The LS1 swap headers are done!!!! Jamie thanks for letting me help out with this, it was a pleasure. The quality and fit of the headers is outstanding (I can't wait to fire the Suburban up! ). If anyone wants any more pics of the headers installed, you can check my crewcab or suburban build in my signature. R/ Attached Images __________________ Rob As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 69 SuperBurb - "My grandpa used to have a Suburban exactly like that." http://67-72chevytrucks.com/vboard/s...d.php?t=200387 6T8 ZZZZ - Farm truck... original paint, slammed, tubbed, stroked, blown and "Bad 2 da Bone"! http://67-72chevytrucks.com/vboard/s...d.php?t=358692 Motor info: http://67-72chevytrucks.com/vboard/s...d.php?t=370973 67 SWB 4 Door CrewCab - aka DONKEY (5.3/4L60E) http://67-72chevytrucks.com/vboard/s...d.php?t=226302 Last edited by Hart_Rod; 04-16-2008 at 03:58 AM.

04-12-2008, 08:27 PM	#13
jb4short Damn Yankee Join Date: Feb 2007 Location: Lynchburg, VA Posts: 2,258	Re: The LS1 swap headers are done!!!! Awesome Rob- glad you could find something else for us to be jealous of....LOL!!! Jamie....ever thought of some mid-lengths for lowered trucks?

04-12-2008, 08:52 PM	#14
72BlckButy Sweatin'... Join Date: Apr 2005 Location: Mid-MO Posts: 19,434	Re: The LS1 swap headers are done!!!! Those things sure are pretty... __________________ -Nate 69 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 08 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package (Link)) Help Support the Board here... Krue's FAQs Page 2010 Missouri Car Show, Cruise, and Swap Meet Guide (updated 3/7/10)

04-12-2008, 10:59 PM	#18
Wasted Income All V-8, All the time. Join Date: May 2002 Location: Mackinaw, IL Posts: 636	Re: The LS1 swap headers are done!!!! WOW! Those look fantastic! __________________ 1969 Chevy C-10 LWB Fleetside - E85 fueled, Turbocharged, 5.3L/4L80E, bagged, 13.1@112 with a blown head gasket on the stock converter 1970 K5 Blazer - Big Block - Parts for sale!! 2005 Chevy 2500HD Duramax - 500 RWHP Daily Driver

04-13-2008, 01:28 AM	#19
1FAST68 Registered User Join Date: Apr 2008 Location: east, tx Posts: 136	Re: The LS1 swap headers are done!!!! My thorely headers fit great. But mine did not come with bolts,gaskets or reducers. I would post a pic but it won't let me for some reason. http://67-72chevytrucks.com/vboard/s...d.php?t=286010 Last edited by 1FAST68; 04-13-2008 at 01:29 AM.

04-13-2008, 01:55 AM	#20
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,970	Re: The LS1 swap headers are done!!!! Beautiful work....I like the exit locations...nice and tucked in. __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

04-15-2008, 09:29 PM	#23
1FAST68 Registered User Join Date: Apr 2008 Location: east, tx Posts: 136	Re: The LS1 swap headers are done!!!! thanks again jamie. If he wasn't on the board helping I would have just assumed they didn't come with those parts and never asked.

04-16-2008, 03:44 AM	#24
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,811	Re: The LS1 swap headers are done!!!! I just talked to Nick and got some of these for my 73-87chevytrucks.com pickup with a 6.0L that I plan to put 2 STS turbos on... __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) Captkaos Customs 73-87chevytrucks.com

04-16-2008, 10:56 PM	#25
Yukon Jack Mechanically Challenged Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,183	Re: The LS1 swap headers are done!!!! I think the word "impressive" sums up your headers quite well! __________________ 1970 Blazer with a 400 sbc and 4" lift Roadworthy! 1969 K20 with a 454, a bit of lift and 35's Yukon Jack's Web Pages



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