Anyone using Speed Engineering Headers??? - Page 4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Coursey · 12-14-2018, 08:52 AM

ttt.

racecougar · 12-14-2018, 12:36 PM

Quote:

Originally Posted by Coursey

ttt.

Why are you bumping this? What is your question?

shawn70 · 02-06-2019, 04:13 PM

Anyone notice the horrible steep angle on the speed engineering long tubes #7 primary tube at the flange????

**derotoreut** · 02-10-2020, 09:33 PM

I know this is an older thread, but I thought I'd share some information. My build is a '70 K10 with 5.3L LM7 (see my build thread below). I was planning to use the Doug Thorley TRI-Y headers (THY-324Y-C), but they hit the firewall and won't work.

I decided to use the Speed Engineering model 25-1021. The short-to-mid length header. I was considering their long tube headers, but their website specifically states they do not fit 4WD. I didn't want to chance it.

I fit up the headers and so far they look good. I'm happy with the choice because I'll have to custom fit the exhaust around the transfer case cross member anyway. If I went with long tubes, I believe they would have come down lower and pointed directly at the cross member and it may have been more difficult to pipe around.

The one thing I just decided to do was to have them ceramic coated. The price of these headers is so low that the ceramic coating will cost more then I paid for the headers. IMO I don't care for the look of stainless headers after they've been on for a while and discolor. Hopefully I'll be able to avoid that with the ceramic coating. I'll keep you posted on that.

The Doug Thorley TRI-Y headers (THY-324Y-C) hit the firewall and won't work.
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This high pipe out of the Thorley headers hits on the passenger side firewall. The headers below it are for my '71 C10 project.
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These are the Speed Engineering headers I'm using.
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Fit up is pretty good on both sides.
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Sent them both out for ceramic coating. I'll update this upon their return.
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**Richard** · 02-11-2020, 06:03 PM

Wish these were available in 1 7/8" primaries.

**derotoreut** · 02-11-2020, 09:58 PM

Quote:

Originally Posted by Richard

Wish these were available in 1 7/8" primaries.

Agreed. I think with 1-5/8 primaries they'll be OK for my stock 5.3 LM7 swap.

**derotoreut** · 03-05-2020, 10:52 PM

As a follow up, I just received my Speed Engineering headers back from having them ceramic coated. Inside of primaries and collector ends are fully coated.

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TA_C10 · 03-06-2020, 01:46 PM

Those are sweet man. I DEI wrapped my long tube S.E. headers but I will eventually get them coated like this.

**Richard** · 03-10-2020, 02:14 AM

Those look super nice! Still a bit cautious of using them for my overdriven and slightly modded LSA.

12-14-2018, 08:52 AM	#76
Coursey Registered User Join Date: Aug 2013 Location: Kentucky Posts: 550	Re: Anyone using Speed Engineering Headers??? ttt. __________________ 1961 Biscayne http://67-72chevytrucks.com/vboard/s...90#post6978790 SOLD 1971 C-10 http://67-72chevytrucks.com/vboard/s...d.php?t=656258SOLD 1966 Suburban http://67-72chevytrucks.com/vboard/s...85#post7323885

02-06-2019, 04:13 PM	#78
shawn70 Registered User Join Date: Jan 2018 Location: Metro STL Posts: 1	Re: Anyone using Speed Engineering Headers??? Anyone notice the horrible steep angle on the speed engineering long tubes #7 primary tube at the flange????

02-10-2020, 09:33 PM	#79
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	Re: Anyone using Speed Engineering Headers??? I know this is an older thread, but I thought I'd share some information. My build is a '70 K10 with 5.3L LM7 (see my build thread below). I was planning to use the Doug Thorley TRI-Y headers (THY-324Y-C), but they hit the firewall and won't work. I decided to use the Speed Engineering model 25-1021. The short-to-mid length header. I was considering their long tube headers, but their website specifically states they do not fit 4WD. I didn't want to chance it. I fit up the headers and so far they look good. I'm happy with the choice because I'll have to custom fit the exhaust around the transfer case cross member anyway. If I went with long tubes, I believe they would have come down lower and pointed directly at the cross member and it may have been more difficult to pipe around. The one thing I just decided to do was to have them ceramic coated. The price of these headers is so low that the ceramic coating will cost more then I paid for the headers. IMO I don't care for the look of stainless headers after they've been on for a while and discolor. Hopefully I'll be able to avoid that with the ceramic coating. I'll keep you posted on that. The Doug Thorley TRI-Y headers (THY-324Y-C) hit the firewall and won't work. This high pipe out of the Thorley headers hits on the passenger side firewall. The headers below it are for my '71 C10 project. These are the Speed Engineering headers I'm using. Fit up is pretty good on both sides. Sent them both out for ceramic coating. I'll update this upon their return. __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977

02-11-2020, 06:03 PM	#80
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,884	Re: Anyone using Speed Engineering Headers??? Wish these were available in 1 7/8" primaries. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

03-05-2020, 10:52 PM	#82
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	Re: Anyone using Speed Engineering Headers??? As a follow up, I just received my Speed Engineering headers back from having them ceramic coated. Inside of primaries and collector ends are fully coated. __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977

03-06-2020, 01:46 PM	#83
TA_C10 Registered User Join Date: Jun 2018 Location: Texas Posts: 1,353	Re: Anyone using Speed Engineering Headers??? Those are sweet man. I DEI wrapped my long tube S.E. headers but I will eventually get them coated like this. __________________ TA_C10 Stage 1 build - http://67-72chevytrucks.com/vboard/s....php?p=8333444 "It's only money".

03-10-2020, 02:14 AM	#84
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,884	Re: Anyone using Speed Engineering Headers??? Those look super nice! Still a bit cautious of using them for my overdriven and slightly modded LSA. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

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