Exhaust manifolds

81slantnosewp

Well-known member
stock log type
20200206215623-5f4726b3-me.jpg

Heavy Duty
20200206215630-019cc4b9-me.jpg

rare ak miller turbo manifold discontinued

Hedman Street Headers 89300 (painted)
20200206215624-a682cba5-me.jpg

Hedman Street Headers 89306 (Ceramic coated)likely looks like above image with different coating
Hooker Super Competition Headers 6823HKR

clifford truck headers

protuninglab headers look like hedmans with chrome

not much information except the seller was eugene discontinued 6into1

its been confirmed clifford had a set of shorty headers at one time


stock fuel injected manifolds if im not mistaken there are 2 or 3 different castings that can cause clearance issues with some carb intakes but nothing major


more information on mounting EFI manifolds on older heads
https://fordsix.com/viewtopic.php?f=2&t=78974&p=609538&hilit=FI+clips+Clifford+alignment


Marine dual intake and exhaust manifold water cooled
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{all images have been save to ford six gallery}
 

BigBlue94

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The Clifford truck headers fit well on an 85 bronco. They have 1.625" primaries and 2.5" collectors.
 

old28racer

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With my 1971 F250 4.9L inline 6 motor I am trying to keep a more stock cast iron engine compartment look, so I will be removing my existing headers and running a pair of EFI cast exhaust manifolds. Also I really don't care for the header/starter problem. I will be running a hogged out 240 cast intake, 2x2 aluminum adapter, my current Holley 2300 2bbl carb. Think it will make a nice looking engine setup with a bit more performance.

300-Motor-48.jpg

47.jpg
 

BigBlue94

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I'll add pics to supplement my previous post.

Clifford truck headers, after 15 years.
20180329_075317.jpg


After a treatment of Jet-hot 2000° offroad coating.
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Close up of the Jet-hot, though I cant remember which color; cast iron or titanium.
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Mated up with a Clifford intake, painted Ford Gray. Colors match perfectly.
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And the shape of the y-pipe for said headers. Custom made with mandrel bends and the flowmaster scavenger y-collector.
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Capjack01

New member
thanks for the clifford pics. thats the first shot Ive been able to find that showed them installed.

a couple of the primary concerns about running headers is starter heat soak/entrapment. from the earlier pics they seem to be routed slightly different from the hedman and hooker sets. does it help at all with trapping the starter or is it still a case of pulling them off to do a starter change?
 

BigBlue94

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It is possible to get to the starter IIRC, but not very easy. It's been running the same large case ford starter for years with no issues. Even in moab when the engine was at 240° from the headers heatsoak, the starter had no issues.
 

81slantnosewp

Well-known member
from my experience efi manifolds already mount onto the older heads the difference is in the ease of installation the newer heads had studs to aid in the process but were not essential to function whenever I have put efi manifolds onto an older engine the engine was outside of the vehicle it might take some fiddling, a couple of headaches, and maybe a second set of hands but not impossible
 

guhfluh

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pmuller9":2wcnnhx5 said:
Protuninglab stainless header.
https://www.protuninglab.com/hds-fpu65-2wd-lt.html
[image]https://s.yimg.com/aah/yhst-11161747262114/75-89-ford-f150-f250-3-9l-4-9l-rwd-stainless-exhaust-manifold-header-replacement-1.jpg[/image]
"Protuninglab" may be one of the more reputable vendors, I don't know, but there are many other vendors of the same Chinese made stainless header on ebay. DNA Motoring is one I'm probably most familiar with(and it's cheaper). https://www.amazon.com/dp/B07RD5D9XZ/re ... wEbYJZDQFH
 

BigBlue94

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BigBlue94":3nn92d0f said:
It is possible to get to the starter IIRC, but not very easy. It's been running the same large case ford starter for years with no issues. Even in moab when the engine was at 240° from the headers heatsoak, the starter had no issues.

While reinstalling my Clifford headers yesterday, I took a gander at the starter. I'm pretty sure theres no way to get it out without removing the headers, or at least one. Unbolting it is possible, but theres no room to remove it.
 

Firepower354

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1986F150six":1fp8iv05 said:
I just ran across this and thought of this thread [as well as the intake manifold thread].

https://www.ebay.com/itm/ECON-O-POWER-M ... SwX-Zd3rZc


I've been watching that but it's about 4x more than I could justify. Adding a couple more 1v carbs, and Jet Hot coating the inside of both cavities, has been in my mind for a decade, on the brand C cheap ones(even aluminum ones!). The absurdly ancient design of the multi piece manifolding and washers is sorta effective, but still my least favorite part of inlines.
 

pmuller9

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Firepower354":1z4stw8y said:
Adding a couple more 1v carbs, and Jet Hot coating the inside of both cavities, has been in my mind for a decade,
see post #21 in the "Intake Manifolds" thread.
 

Firepower354

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pmuller9":1mixlheg said:
Firepower354":1mixlheg said:
Adding a couple more 1v carbs, and Jet Hot coating the inside of both cavities, has been in my mind for a decade,
see post #21 in the "Intake Manifolds" thread.


Yep, but that only addresses the "easy" part of what the uni-log fixes. I dig the solid single flange and one-piece-ed-ness :)

I have a HD exhaust mani on now, and an EFI lower on the bench with a 2v intake, and a pile of bends, that I may try. No heat makes that seem a bad idea though. My van is tight for a fab-A-log out that far.
[image]https://fordsix.com/img/_data/i/upload/2019/03/17/20190317202526-22dc17a7-me.jpg[/image]
 

sqrbckguy38

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So I've been hearing at great lengths that these headers will not fit a 4WD truck. Is there a specific one that will, or are they all interference fit? I ask for my 79 cause it could really use a nice exhaust and intake upgrade. The Highboy we have sorta kicks my poor little guys ass in acceleration, and anything else.
 

BigBlue94

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sqrbckguy38":4mfdufey said:
So I've been hearing at great lengths that these headers will not fit a 4WD truck. Is there a specific one that will, or are they all interference fit? I ask for my 79 cause it could really use a nice exhaust and intake upgrade. The Highboy we have sorta kicks my poor little guys ass in acceleration, and anything else.

I have Clifford headers on my 85 bronco. No issues at all. EFI manifolds would be better though, as they are less hassle. And they keep heat in better. But longtubes really sound good on 300s. Mine join into a single 3" high flow exhaust.
 

68Flareside240

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Not a new design, but Hedman is now offering their 89300 header in a Black Maxx ceramic coating, part #89303.
 
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