Modifying Ch evy headers for that purpose has been done but is probably best left to the do-it-yourselfer.

The cost to modify the ch evy headers to fit will probably out-way the benefit over a header that is simply designed from the beginning to fit.  You figure in the cost to buy the header, the cost for the flanges, the cost for adjustments to get them to fit, the cost to re-coat the headers, and that person having to make a profit on top of all of that, and that becomes an expensive cheap header. - just buy a good set that is already made to fit.  Use the links earlier in the thread to pick the best available for your application..



Lawrenceville, GA

Did you look at Jerry christionson. Yestertech? Nice lookin headers! $670
Rowen

Rowen
55CV
Woodland, Ca

Like Matt, I got a set and made a trial fit. Seems good to me and I'll post pics once I install them.
Probably saved 10# off the front end.
BUT, re headers, why can't some smart & talented guy take a set of scruby/Ford/whatever CHEAP header and
modify to fit the Ford Y flanges? Maybe like the stock SS headers from a Mustang, etc.
Not talking about equal length here, just something better/lighter than the stock cast iron stuff.
Just some random thoughts

I ordered a set today. $200.00 + shipping

They will fit. I had the stock column and clutch linkage hooked up before taking them out...

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Billerica, MA

Did you try them on a totally stock truck?  It looks like the outlet is right next to the steering box and clutch linkage, judjgng by the holes in the frame for mounting the clutch z bar pivot.
I would not declare that until they have actually been installed on a totally stock truck.



Lawrenceville, GA

Well I bought these headers to try out. I think you're all right; they probably won't flow much better than regular log manifolds. BUT, they do fit the trucks really well. I threw em on my build and took a few pics. I have a couple mods going on regarding the steering column but the tube headers would still clear a totally stock truck FYI 








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Billerica, MA

I emailed the seller. He claims they fit without a problem.
I didn't inquire about a stick trans as I don't have one

Hmmm, square head ports mated to round header tubes, I wonder how you would seal the two?

I don't think they'll flow much, if any, better than stock manifolds.
But they would be much lighter and prettier, and, take up less space.