I found the perfect headers for 67/86 C10 K20

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

donnieray

Talks to dogs and trucks.
Joined
Oct 23, 2014
Posts
588
Reaction score
425
Location
Roanoke Rapids NC
First Name
Donnie
Truck Year
84,85,86.
Truck Model
86 C10, 84 K10 MM7 NP833 option truck, 85 K10.
Engine Size
350,355;350.
Has anyone used these on a manual? Id order them now if I knew they would clear the bellcrank on my 84 k10.
 

78C10BigTen

Full Access Member
Joined
Apr 12, 2017
Posts
15,475
Reaction score
23,678
Location
pennsylvannia
First Name
Ted
Truck Year
1978
Truck Model
C10 BIG TEN
Engine Size
350
You must be registered for see images attach

You must be registered for see images attach

You must be registered for see images attach

You must be registered for see images attach

You must be registered for see images attach
What muffs are those?
 

MikeB

Full Access Member
Joined
Apr 4, 2014
Posts
1,745
Reaction score
935
Location
Justin, TX
First Name
Mike
Truck Year
1969
Truck Model
C10
Engine Size
355
Nice to know. My Patriot headers (same tubing bends as Doug's) hit the brake and fuel lines near the passenger side motor mount fame bracket. I ended up moving the lines inboard an inch or so, but what a PITA that was.:mad: Should have returned them. At least they tuck up nicely, almost too high. And they use 16 gauge tube and 5/16" flanges.

My truck is an 82 C10, so they may clear the hard lines on different years and/or K models.
 
Last edited:

Scott91370

Full Access Member
Joined
Apr 2, 2018
Posts
924
Reaction score
899
Location
Burleson, Tx
First Name
Scott
Truck Year
1985
Truck Model
Sierra1500
Engine Size
350
Bringing this one back!!

I'm working on replacing my headers because they hang about 3" below the frame and with the truck as low as it is I have less than 3" ground clearance between the header flange and the ground.

Did you have any issues with the being able to remove/replace plugs or plug wires when you installed these?
 

Meatwad

Junior Member
Joined
Apr 27, 2022
Posts
11
Reaction score
31
Location
North Georgia
First Name
Ryan
Truck Year
1985
Truck Model
C2500
Engine Size
350
Bump. If anybody could answer, will these fit a 2wd? Not a lowered truck. Have a bad exhaust leak and figure itd be the perfect time to do headers and exhaust. Dont want to have clearance issues
 

HotRodPC

Administrator
Staff member
Admin
Joined
Aug 29, 2010
Posts
47,008
Reaction score
8,972
Location
OKC, OK
First Name
HotRod
Truck Year
85 K20 LWB
Truck Model
Silverado
Engine Size
454 - Turbo 400 - 3.73
Bump. If anybody could answer, will these fit a 2wd? Not a lowered truck. Have a bad exhaust leak and figure itd be the perfect time to do headers and exhaust. Dont want to have clearance issues
Just an assumption, I'd think they'd fit a 2wd even eaiser. I can't think of anything that would be in the way. It looks like they'd even clear Z bar linkage for manual trans.
 

Plocheck

Junior Member
Joined
Oct 28, 2012
Posts
2
Reaction score
1
Location
Southeast Texas
First Name
Philip
Truck Year
1987
Truck Model
R20 - Custom Deluxe
Engine Size
350 / 5.7 EFI
Guys, I hate to bring up a year-old discussion. I bought a 1986 K20 in December, with factory headers and the AIR tubing still connected, but the intake and carb were replaced and the EGR was deleted, rendering the Smog infrastructure useless.

So I want to remove the Smog pump and all the lines/hoses. I'm debating on cutting the tubing @ the manifolds, and attempt to remove the flare-nuts and then put in a plug, but since the flare-nuts been there for 36-years, I'm afraid it will be wasted effort, and I should install the headers that Nasty-LSX did. (Great job and pics by the way!!

My question is, did you have to modify/cut any brackets on the drivers side, for the power steering pump or the A/C compressor for the manifold to bolt up, or was it a direct replacement fit? Thanks in advance if anyone has any guidance, suggestions and/or pictures. I'm wanting to clean up the clutter under the hood. Not looking for racing or high performance modifications, just something to make it easier to work on, remove all the non-functioning components for a daily driver.


You must be registered for see images attach


Attached is a pic of the truck.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
28,956
Reaction score
23,465
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Guys, I hate to bring up a year-old discussion. I bought a 1986 K20 in December, with factory headers and the AIR tubing still connected, but the intake and carb were replaced and the EGR was deleted, rendering the Smog infrastructure useless.

So I want to remove the Smog pump and all the lines/hoses. I'm debating on cutting the tubing @ the manifolds, and attempt to remove the flare-nuts and then put in a plug, but since the flare-nuts been there for 36-years, I'm afraid it will be wasted effort, and I should install the headers that Nasty-LSX did. (Great job and pics by the way!!

My question is, did you have to modify/cut any brackets on the drivers side, for the power steering pump or the A/C compressor for the manifold to bolt up, or was it a direct replacement fit? Thanks in advance if anyone has any guidance, suggestions and/or pictures. I'm wanting to clean up the clutter under the hood. Not looking for racing or high performance modifications, just something to make it easier to work on, remove all the non-functioning components for a daily driver.


You must be registered for see images attach


Attached is a pic of the truck.

Back when I had my '86, I couldn't get those flare nuts to break loose. When I removed the smog pumps, I simply clamped off the main injection feed to the manifolds, (headers).

On my '90, I pinched off the injection tubes inside of the manifolds.
You must be registered for see images attach
 

Plocheck

Junior Member
Joined
Oct 28, 2012
Posts
2
Reaction score
1
Location
Southeast Texas
First Name
Philip
Truck Year
1987
Truck Model
R20 - Custom Deluxe
Engine Size
350 / 5.7 EFI
Thank Bucket. I guess I can remove the headers (manifold), and attempt to remove the flare nuts, but I guess I'm lazy, if I have them off, why not go back with something new. But, to be honest, I never considered removing the manifolds and trying it on the bench. That is certainly easier to work on for sure.

But I'm hoping that if there are no modifications to any brackets if I install the headers, then just do that. A new idea to kick around now.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
28,956
Reaction score
23,465
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Thank Bucket. I guess I can remove the headers (manifold), and attempt to remove the flare nuts, but I guess I'm lazy, if I have them off, why not go back with something new. But, to be honest, I never considered removing the manifolds and trying it on the bench. That is certainly easier to work on for sure.

But I'm hoping that if there are no modifications to any brackets if I install the headers, then just do that. A new idea to kick around now.

Yeah, that's why I clamped off the inlets on the '86. I didn't want to remove the manifolds to remove the lines. They were the factory stainless steel ones that are sort of like headers. My main goal was to get the smog pumps and hoses and canisters out of the way. There was just no room for basic maintenance with all that stuff in the way.

On the '90, it was an engine swap and I had the manifolds off anyway.
 

Nasty-LSX

TogetherforeverCovid19
Joined
Nov 22, 2014
Posts
1,069
Reaction score
1,120
Location
HOUSON TX
First Name
Mi Hung Lo
Truck Year
85/86/87
Truck Model
c10/k10/k20
Engine Size
LSX
:favorites13:
:favorites13::favorites13::favorites13:
 

Latest posts

Forum statistics

Threads
41,847
Posts
903,379
Members
33,361
Latest member
iiixtremeiii
Top