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#1 |
Registered User
Join Date: Mar 2014
Location: Broken arrow
Posts: 211
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Header clearance help
Hello guys, I could use your help on a problem I have been dealing with for over 15 years. I put some headers on my truck around 15 years ago and have had clearance issues with them ever since. It has been so long ago, I don't remember which brand I ended up settling on. I know I tried 3 or 4 and none of them fit worth a crap. When I first took it to the muffler shop to install them, they ground out a spot one the passenger side frame just beside the starter for clearance without asking me. Not too happy with that. That side fits roughly ok with the notch in the frame. The driver side sits less than an inch away from the lower control arm and hits it when driving. It even hit the crossmember on the driver side. And this was the best fitting set I could find. Anyone know why they would sit so close to the a arm or what I could do to fix the problem? I have taken most of my front end apart right now, so I can't take any pictures. I am in the process of cleaning up and painting my frame while it is still on the truck. I am also doing a front brake disc upgrade that prompted all of this project. Thanks
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#2 |
Registered User
Join Date: Feb 2012
Location: Wisconsin
Posts: 144
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Re: Header clearance help
I bought Hedman Hedders from summit. They dropped in and I have no clearance issues. There are different models for different configurations of the vehicle set up, so I never state which part number I have when asked. If you need new headers, call Summit and Jegs, then verify by calling the manufacturer.
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#3 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,858
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Re: Header clearance help
What year is your truck and is it a big block or small block? And was it originally a 6cyl?
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#4 |
Registered User
Join Date: Jul 2008
Location: Richmond, VA
Posts: 56
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Re: Header clearance help
Running Hooker 2452s on my small block in a 2wd 69 lb. Traded a set of tires for a 350 with them on it from a another 67-72 truck. Fit great with zero issues. I prefer Herman but these were essentially free!
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1990 S10 Reg. cab 2wd 2.5/ 700r4, lowered, soon to be a TBI 350/ 700r4 1993 2500 Reg. cab 4wd 6.5 turbo diesel/ 5spd, bigger turbo, Bull Moose pump, cold air intake, and a few other mods 1969 C10 Reg. cab 2wd 305/350, RHS heads, Voodoo Cam, Gilmer drive, 2400 stall, and lots of other goodies! |
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#5 |
Registered User
Join Date: Mar 2014
Location: Broken arrow
Posts: 211
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Re: Header clearance help
My truck is a 70 with a 350. It was originally a 350 small block
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#6 |
Registered User
Join Date: Dec 2011
Location: UTAH
Posts: 353
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Re: Header clearance help
I have hooker headers on my 71 c10 and had to make a small dent in the headers to clear the frame on the passenger side. I have a friend who also has hooker headers on his 67 and needed a lot more room and cut a notch in his frame and a different friend who has hooker headers in a 72 and had about 1/2 in of clearance. Bottom line is one header will fit differently on different trucks.
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Mike 1971 C10 350 1969 C20 396 1979 Corvette L-82 |
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#7 | |
Registered User
Join Date: Dec 2011
Location: UTAH
Posts: 353
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Re: Header clearance help
Quote:
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Mike 1971 C10 350 1969 C20 396 1979 Corvette L-82 |
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#8 |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Header clearance help
Hooker long tubes fit my 72, hooker a/c bracket, no problems no mods necessary for me.
Had a cheap set once, hit the frame and had to weld the leaky tubes (new headers, Blackjack brand). |
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#9 |
Registered User
Join Date: Aug 2013
Location: Lake Wales Florida
Posts: 50
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Re: Header clearance help
I have a similar problem I bought a set of Headmans, had them coated inside and out. A beautiful job. They sit about 3/4's of a inch away from the lower A arm bushing on the drivers side. Counting coating I have about $450 tied up in these headers I'm not about to beat them up.
I bought a new trans cross member and have a 700R4 going in there. The cross member is slotted I think I can move the engine back another 1/4 to 3/8's inch. I think there is enough firewall clearance with the HEI to do that. My concern with that is that maybe the heat will be enough to boil out the lube. Any tips with similar situation would be appreciated. They do hang a little low going into the collector but I can live with that. I will be driving all pavement so just have to keep an eye out for surprise dips. Dan ![]() |
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#10 |
Registered User
Join Date: Feb 2013
Location: Northwest NJ
Posts: 684
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Re: Header clearance help
I have Summit brand (made by flowtek) & have no problem with fitment on my 72 C-10 with 350 & TH-350. They were cheap...about $120 w/ free shipping.
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#11 |
Registered User
Join Date: May 2016
Location: Henderson NC
Posts: 975
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Re: Header clearance help
I have Headman and they are a little close to the grease fitting on my lower control arms but not hitting. I plan to install angled grease fittings, other than that no problems.
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#12 |
Registered User
Join Date: May 2000
Location: Frankfort, Kentucky, USA
Posts: 2,163
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Re: Header clearance help
I have a set of ceramic coated headmans. No clearance issues. I was also worried about fluids and temps. Everything I've read says the ceramic coating keeps temps down where that sent an issue. I will look at the control arm tomorrow. You have me curious.
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'69 CST Short fleetside Lowered, 400 small block, 700R4, 4 wheel disc brakes, front sway bar & rear camaro sway bar (in progress) '87 V10 4x4 Short Fleetside Quad Suspension and Dual Tanks |
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#13 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Header clearance help
In my Opinion I'd go back to the Trucks Ram Horns. Tighten them up once and forget about them, NO I am not from NY Calif grown.
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#14 |
Registered User
Join Date: Aug 2013
Location: Lake Wales Florida
Posts: 50
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Re: Header clearance help
I got the truck with a set of cheap headers on it. If it would have had the stock manifolds I may have kept them.
Looking at the clearance I don't see how the lower control arm could move if at all enough at all to touch the header. I'm kinda concerned about heat. The coating may help a lot with that, thinking about it now a wrap on the tube or tubes in that area may work just fine. Sure doesn't hurt to ask a couple thousand years of experience on here about it. Thanks Dan ![]() |
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