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Doug's Headers Fitment issue?

BloodMoon

BloodMoon

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Hello again my CK5 Family!

Anyone using these headers run in to these issues?
(1975 Chevy K5)

I am putting the new engine in with some Doug's Tri-Y's.
The engine has brand new oem replacement mounts.

All the holes for the engine and mounts are lined up, but the passenger side header is contacting the frame and it is hitting the leaf spring bump stop.

Also the outlet of the header is directed towards the transmission/transfer case cross member not the open passage to the side of it. (dual exhaust setup, no H pipe/crossover)

The driver side has about 2 inches of clearance from the frame rail.

I called Doug's and they have no idea what going on, they offered to look at the header and possibly replace it, but it could take a few weeks.

So I called Summit and spoke with their tech department; here is the short story of what they told me, there is nothing wrong with headers, the fitment is going to be tight, and they gave me permission to do whatever is needed to make them fit. (this includes, denting... bending... and twisting... I asked) the only thing I cannot do, is heat them up with a torch; the torch is the only thing that voids the warranty...

So, to recap, did you have fitment issues like these and how did you get around them?

Thanks folks!

Pictures!
Yes the wires have been rerouted...

Driver Side:


Passenger side: Notice contact with frame, as well as leaf spring bump stop.


 
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Yeah, the Hedman fitment thread exists due to problems like this.

Not sure why companies can't make the things fit, not like your truck has anything in the way of moving that tube inboard.

Of course, Hedman just blamed me for the problem, with my "modified" truck (which it's not) so it's not specific to one header company. They either use bad test beds for their fitment before production, or they have terrible QC.
 
So the thought here is replace them, since I am at work I haven't researched others yet, I know there has to be threads on the subject, but would someone mind directing me towards another set? Something torque orientated?
Thanks!
 
I have used dougs headers on a few Chevys. All have fit pefect. I did purchase a 1970 2wd with some dougs headers and they are hitting the frame in the same place as yours. Looks slight enough just to ding it.
 
As suggested maybe hammer it in to clear. Or, perhaps some Hooker Super Comps might be an option. That's what I'm going with :D Are you running the stock heads?
 
Well , it looks like my mechanic solved the issue for me... He spoke with a couple exhaust guys, and while I was at work they all came to a conclusion to give my frame a slight tactical notch:doah:... No more rubbing!...

I guess I don't need to worry about finding new headers now...

The heads are a matching pair of late 60s early 70s rollers (I think they're from a camaro.)
 
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