Doug's headers hang low!......... - Chevelle Tech
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  #1  
Old May 29th, 12, 10:35 AM
72BB 72BB is offline
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Default Doug's headers hang low!.........

I recently purchased a set of the Doug's (D316) headers for my '69. The fitment around the engine is great, BUT they hang way to low. Has anyone ever had this issue with these headers? I used standard BB motor mounts and have the Brodix race rite heads. I had another '69 a few years ago and used the headman 66002's and they tucked up close to the floor board (did'nt fit as well around the engine area, but with some tweaking was made to work ok). I have never seen or heard of this complaint for the Doug's brand, any feedback would be appreciated.

*I'll try and get some pics on later today
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  #2  
Old May 29th, 12, 11:34 AM
fleming23 fleming23 is offline
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Default Re: Doug's headers hang low!.........

Define "low" because I wouldn't say mine hang low. 496 with AFR 290s & standard mounts.

Here are a few pictures (some better than others) of the headers installed on my car. I don't know if I would want to lower the front too much because they do hang down lower than the cross member, but not bad or "low" in my opinion.

How do yours compare?







Shot from the rear, can't see much but that is kind of the point. The headers are pretty close to the floor pans on my car.
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  #3  
Old May 29th, 12, 11:57 AM
72BB 72BB is offline
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Default Re: Doug's headers hang low!.........

I'm thinking lower than that..... How do yours fit in relation to the stock crossmember? I ask because mine hang well below the stock crossmember. I'm use to the header flange either just clearing the crossmember or actually hitting it with headmans used in the past.
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  #4  
Old May 29th, 12, 12:07 PM
fleming23 fleming23 is offline
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Default Re: Doug's headers hang low!.........

I wouldn't say they hang well below but the rest of the exhaust is not touching the trans cross-member either. That being said, the exhaust pipes (before the x pipe) were custom fit to the headers so any clearance I have would be different than someone else. The best photos I have are the 1st & 2nd one that shows the bottom of the header flange just about level with the bottom of my deep 200-4R trans pan.

Maybe you can get some photos of your issues and post them up. As you mentioned in your first post, not many people complain about Doug's hanging low but Hedman are definitely noted to tuck up very tight so maybe it is just being accustom to the Hedman's fit?
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  #5  
Old May 29th, 12, 12:07 PM
crazydavey crazydavey is offline
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Default Re: Doug's headers hang low!.........

Mine fit like Eric's....have them on both the '67 and the '72...they do not hang low compared to others...
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  #6  
Old May 29th, 12, 1:00 PM
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Default Re: Doug's headers hang low!.........

Yeah, that's why I bought them this time.....no previous complaints that I found. All I know is they ain't gonna work like they are. My buddy and I took a ride and the flanges would drag on turns and the slightest slopes in pavement. I'll get some pics up this evening when I get home.
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  #7  
Old May 29th, 12, 1:07 PM
wiredawg wiredawg is offline
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Default Re: Doug's headers hang low!.........

Did you mean to say D313?
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  #8  
Old May 29th, 12, 4:18 PM
72BB 72BB is offline
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Default Re: Doug's headers hang low!.........

No, the D316 are 1 7/8" for BBC Chevelles.....I think the D313 1 3/4" for BBC Camaro's. Unless I totally misread something.
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  #9  
Old May 29th, 12, 4:33 PM
wiredawg wiredawg is offline
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Default Re: Doug's headers hang low!.........

I was just looking on Summit Racing and if you type in D316 they look like they are for a 1970 - 1981 Pontiac Firebird.

http://www.summitracing.com/parts/DOU-D316/
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  #10  
Old May 29th, 12, 5:01 PM
Slick71ss Slick71ss is offline
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Default Re: Doug's headers hang low!.........

They are listed to fit 68-72 Chevelles...

http://www.pertronix.com/prod/new/details.aspx?ID=130

I have the D316, and agree they hang low, but not quite as low as the Hooker Super Comps I had. If you can deal with a 1 3/4" primary header, Hedman 68198 are the absolute best fitting header I have seen on a Chevelle. Those things are even with the cross-member when installed.
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  #11  
Old May 29th, 12, 5:24 PM
Slick71ss Slick71ss is offline
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Default Re: Doug's headers hang low!.........

Went out a snapped a quick pic of how low mine are and measured ground clearance. I must admit, I've been one of the members recommending these headers for how nice they fit, but they are just as low as my Hookers were. I have 4" of ground clearance, but my car is lowered a couple inches up front. They would be fine on a stock ride height car, but you might run into problems on a lowered car.


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  #12  
Old May 29th, 12, 5:41 PM
72BB 72BB is offline
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Default Re: Doug's headers hang low!.........

My thoughts exactly.......my 496 probably makes 575 to 600 flywheel HP. I've read where that may be about the limit for a 1 3/4" header tube size with that HP range. The car has 2" lowering springs front and back. The hedman 66002 or 68198 maybe the ticket. This is an expensive lesson.
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  #13  
Old May 29th, 12, 6:44 PM
fleming23 fleming23 is offline
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Default Re: Doug's headers hang low!.........

Just for reference, this is how my car sits.

I think there is a definite trade-off between header tube size versus clearance.
Personally, if I were to lower my car I would probably look into mid-length rather than long tubes.



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  #14  
Old May 29th, 12, 7:12 PM
yellowvette yellowvette is offline
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Default Re: Doug's headers hang low!.........

I have exactly the same problem with my hooker supercomp on my 427 chevelle ss 1968
with the bumpy competition enginnering drag schock I hurt the road all the time
so I want to change my headers....I see lot of people here are really happy with the headman 68198 so I think that I take this one
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  #15  
Old May 29th, 12, 7:26 PM
70SS540 70SS540 is offline
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Default Re: Doug's headers hang low!.........

Heres some Lemon's 2 1/4 tubes to 4" collector for reference. These are the ones with two tubes going around the frame. The 70 Chevelle is up on ramps. I believe the 7x7 railroad tie there is referencing the ground.
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