[1lemans]

i have a 68 lemans i put dougs roundport headers on #d567r.left side goes straight on after you remount brake distribution block on top of chasis rail.Right hand side requires a couple pipes modified or completely remade.Also you have to use a shorter oil filter.I think a couple hundred for the mods is wishful thinking.Are you in Sydney? Peter

[OZZIEVILLE 67 2 door]

Hey OZ68

I got Dougs on my Bonneville ,the coated ones and look and fit real good ,get Butler to send them and local shop to build rest of exhaust

John L.

[Oz68GTO]

Originally Posted by 1lemans

i have a 68 lemans i put dougs roundport headers on #d567r.left side goes straight on after you remount brake distribution block on top of chasis rail.Right hand side requires a couple pipes modified or completely remade.Also you have to use a shorter oil filter.I think a couple hundred for the mods is wishful thinking.Are you in Sydney? Peter

Hey Peter, I'm in Melbourne bud. I read those mods you mentioned in the tech specs in a couple of fabricators sites. Appreciate the confirmation. not getting any feedback at the moment from fabricators. might have no choice but customs perhaps?????

[Oz68GTO]

Originally Posted by OZZIEVILLE 67 2 door

Hey OZ68

I got Dougs on my Bonneville ,the coated ones and look and fit real good ,get Butler to send them and local shop to build rest of exhaust

John L.

Nice mate.

[68WarDog]

I have the 2" SC and have retained my shift linkage with back-up lights 70 GTO

[Skip Fix]

On my TA I rally wanted 1 3/4 when I had the RAIV 400 in it. the 2" seemed a little sluggish.
Hedman made a set to fit second gen and early GTOs. Crap fit! both sides rear tube hit the firewall. Cut off 2 tubes each side used paper towel rolls for mock up and remade them to fit. Even get to all the bolt holes. Just needed some mandrel Us and Js-even could use some sections of the old tubes. Welds are not pretty but they fit good and picked the car up.

My thoughts on the cheap OBX stainless headers for round ports too, if they don't fit cut and make a couple for the price for SS hard to beat!.

[Oz68GTO]

Gents, thank you for all your thoughts and assistance. I've loved reading all your experiences. I've sourced a fella not too far from home that will build & install headers & pipes for me. couldn't get any of the commercial fabricators (US) to commit. The motor goes back in next week excluding valve covers & I''ll truck it to his place. As soon as I get it back & get the new valve covers on I'll drop a photo in to let you see how it went.............hopefully all good. Cheers Oz

[tpssonic]

I run 1 3/4" Heddmans- off of a 1965 GTO that were aftermarket ceramic-coated. Great fit on my O-port E-headed 1968 GTO. They fit better (and were already coated) than the 2" Hooker S-comps.

[Formulajones]

2" Hooker super comps here on a 69 GTO with Edelbrock round ports. Fits good and back drive linkage still fits.

[HWYSTR455]

Originally Posted by Formulajones

2" Hooker super comps here on a 69 GTO with Edelbrock round ports. Fits good and back drive linkage still fits.

Do those hang low on the passenger side, or has that been corrected?


I'm at this point, buying headers, and in the past have used the D567s. Was hoping to get some feedback on the D522s, pics of passenger side would be great too.

.

[Formulajones]

Here's a ground level picture. They hang pretty evenly (driver to passenger)
The oil pan hangs lower. The headers are pretty darn close to hanging about the same as the lower control arm spring pockets. Hope that helps.

[HWYSTR455]

Wow, that's way better than they used to be, way better. And you didn't have to bang any dents in them around the lower control arm bracket?

Would still like to see some pics of some D522s, and if they need any hammer work. I know the D567s contact the lower control arm bracket.

I don't see any Mad Dog headers other than the ones Butler has listed, no 68-72 A-body ones.

.

[Formulajones]

Everything clears fine. Actually shocked that the back drive linkage even fits without any problems.

[HWYSTR455]

Originally Posted by Formulajones

Everything clears fine. Actually shocked that the back drive linkage even fits without any problems.

Thank you very much for that info, very good to hear. They are $75 more than the Doug's, but totally worth it if they fit that well.

They look identical to the Doug's D522s by pictures. Would like to hear from someone who has them before I pull the trigger.

.

[Formulajones]

Well, they are tight in places for sure, but they do fit and don't rub anything. Dad has had some comments on them already at local cruises, people wanting to know what they are. Those 2" tubes snake around a bit up top and look pretty cool.

Not a Pontiac but I do run a pair of Dougs on a SBC in our 69 Z, which kind of gave me some impression of Dougs. I just installed them a couple months ago. I run the 1 5/8 version hoping they gave a bit more room. They give plenty of clearance for everything, and of course a SBC in a first gen has plenty of room. I was only disappointed in one thing, the #7 tube comes down and interferes with the back drive linkage on the 4-speed. I was disappointed because there is plenty of room down there that they could have easily moved that #7 tube around that back drive rod and made it work just fine. It only needed about 3/4" either towards the rear or towards the side would have worked.

Anyway, I decided to make the #7 tube clear myself. I wasn't removing the back drive linkage. I got some looks from dad when I started modifying $650 coated headers, lol.

After that, works fine. No other complaints. But it just made me think, If Dougs didn't want to bother with a simple change to make the headers work with a back drive setup on a SBC Camaro that has a ton of room to play with, then what other issues do they have on other engines???

[HWYSTR455]

Well, I pulled the trigger on the D522s, I will post my experience. Was hoping to get more feedback, was on the wall with the Super Comps, we will see.

.

[64speed]

Just wondering if you are in Australia is this car right hand drive? That's gonna make a huge difference in header fitment

[HWYSTR455]

Should have created a new thread, but felt the other thread I started would encompass the info, so just added it to the end.

D522 install with pics and install/fitment comments:

http://forums.maxperformanceinc.com/....php?p=5796610

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