I just installed a set of these headers today - just wanted to say it's an excellent header. I had Hooker Supercomp 2131 with 1 3/4" pipes and was never happy with them. The driver's side hung way low and hit the pitman arm.. I lowered the car and could see the headers wouldn't work - it was about 2 1/2" off the ground at ride height. Thanks to Bill (sc68z28) and kcs, I ordered the Doug's D368's and I couldn't be happier. They tuck up way tighter than the Hookers, esp on the driver's side. They were a snap to install, as well. No mods, no dimples, no nuthin, and gobs of clearance around the PS box. Pass side went in from the top, driver's side from the bottom as usual. Did not need to remove the motor mount on the driver's side - just the spark plugs.

Anyway - if you have a set of raised exhaust port heads(mine are GMPP Fastburn) and need 1 3/4" tubes to keep from obstructing the port, as well as ground clearance, I highly recommend these.

Oh yeah - the Doug's are NOT equal length tubes, and the Hookers are. Do you think my motor will notice?

Great feedback. I had read an article by Vizard who said the unequal length is fine. Happy motoring!

Probably cost at least 100hp.:beers:
But that will help save the 8.2" 10 volt rear end.:hurray:
RA

I hope not. That would only leave 50 left. Good thing I don't have a Big Black Chevy.

Al, that's good to hear it all worked out well for you. :hurray:
---Bill.

I just found this thread. I also have a ZZ430 with fastburn heads and have been looking for headers that actually fit.
Al, can I ask a couple of questions before I spend the $$, if you don't mind. :)

Did you have to slot the bolt holes to slide the headers up or did they fit the raised D-ports as they came?
Will they clear a factory Z bar for the clutch? I'm planning on replacing my 700R4 with a Tremec 5 speed this winter.
And they really do clear the power steering box? How about the pitman arm?

Thanks for the info!

joe

Thanks for posting this....I have a SB 400 with Dart Iron Eagle 215's......I don't think they are raised ports, and if they aren't, I wonder if Dougs would still fit well in my '68?

Thanks for posting this....I have a SB 400 with Dart Iron Eagle 215's......I don't think they are raised ports, and if they aren't, I wonder if Dougs would still fit well in my '68?

I have Dart Pro 1's and the D368's are perfect. Best header fit I have ever had on any of my cars.

I have Dart Pro 1's and the D368's are perfect. Best header fit I have ever had on any of my cars.

Thanks for the info Strick, now I know what i will buy.


Where is the best place to buy these? I found them at jeg's for 529.00, coated. maybe someplace else can beat that price?

I also have a couple questions. I had some recent problems that forces me to change my mufflers on my car so if there is a header that fits i want to change them too. I found this post and am upset with the fit of my 550.00 Hustler headers. They have 1 3/4 primary tubes. They DO NOT FIT around the gearbox. I looked at the Doug's d368 footnotes and it says they will not fit with a saginaw power fast ratio gearbox. My gearbox is the one with iroc internals. Will these headers still fit with my gearbox? And, could this be the reason my Hustler headers don't fit properly? And if true on both occasions, what will fit? Do i need to take the p/s off and put a manual box? Thanks in advance. Doug

I just found this thread. I also have a ZZ430 with fastburn heads and have been looking for headers that actually fit.
Al, can I ask a couple of questions before I spend the $$, if you don't mind. :)

Did you have to slot the bolt holes to slide the headers up or did they fit the raised D-ports as they came? I did not. The gasket that comes with the headers is an EXACT match to the header flange. I laid the gasket up to the Fastburn head and aligned the bolt holes in the gasket to the bolt holes in the head. It did not hang into the port. The D368 has a slightly larger opening in both height and width than the Hooker 2131 supercomp.
Will they clear a factory Z bar for the clutch? I'm planning on replacing my 700R4 with a Tremec 5 speed this winter. Sorry - running an automatic with mine, so I don't know.And they really do clear the power steering box? EasilyHow about the pitman arm? Not even remotely an issue
Thanks for the info!

joe

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I also have a couple questions. I had some recent problems that forces me to change my mufflers on my car so if there is a header that fits i want to change them too. I found this post and am upset with the fit of my 550.00 Hustler headers. They have 1 3/4 primary tubes. They DO NOT FIT around the gearbox. I looked at the Doug's d368 footnotes and it says they will not fit with a saginaw power fast ratio gearbox. My gearbox is the one with iroc internals. Will these headers still fit with my gearbox? I have the Cardone 276550 IROC box, which I believe is externally the same dimension as the original PS box for 1969. The headers easily clear. I am using 1969 307/327 frame stands and motor mounts - don't know if that makes a difference And, could this be the reason my Hustler headers don't fit properly? And if true on both occasions, what will fit? Do i need to take the p/s off and put a manual box? Thanks in advance. Doug

..

Thanks Al.

Just wondering if anyone has used the d368 header on a set of 195 straight plug afr sbc heads? If so, was there ample sparkplug boot clearance,in particular for msd 90deg. boots. Also wondering how the exhaust port to header flange match was ? Thanks in advance Ken.

Will they clear a factory Z bar for the clutch?
joe

I'm also using the D368's, factory Z-bar and linkage all fit good :thumbsup:.
The port match is perfect on my Dart Pro-1 230cc heads.

---Bill.

Anyone running these headers have power steering? If so, any pictures from the drivers side where the header passes by the headers tubes? Thanks

I am running an AGR fast ratio 12:1 gear box - no clearance issues. Give me a few and I will post up a picture. The closest clearance is the idler arm, not the gear box. I am running the tall 302/350 frame mounts.

My camera died after the second photo. This will show (somewhat) that the fit is tight, but clearance is there. I would guess 5-8mm between the header and the gearbox.

My camera died after the second photo. This will show (somewhat) that the fit is tight, but clearance is there. I would guess 5-8mm between the header and the gearbox.

Wow. That tube configuration looks identical to my Hustler hearder! I'll go get a picture real quick.

Looks remarkably familiar, doesn't it?

Doug - I never had the stock gearbox in with my new motor. My car had a 6 cylinger in it 4 months ago and a stock gearbox. The AGR went in during the transformation. The headers fit right in (from the bottom) with no issues at all.

I wish I could be of more help.

Doug - I never had the stock gearbox in with my new motor. My car had a 6 cylinger in it 4 months ago and a stock gearbox. The AGR went in during the transformation. The headers fit right in (from the bottom) with no issues at all.

I wish I could be of more help.


Hey Strick. My power steering bracket mounts under the drivers side engine mount. Could this cause a clearance issue with the header fitment? Does this sound correct to have that bracket? You can see the bracket in the picture. It looks to be about .250 thick. Thanks

Bear with me here; I am not sure I am on the right channel with you. Your power steering bracket is UNDER to engine mount? My gearbox mounted directly to the subfame using 3 bolts (if i remember correctly). Is your gearbox also mounted to the subframe, or just that engine mount bracket? If no on the subframe mount, is there any clearance between the gearbox and the subframe? If there is clearance then you are definitely not going to have the clearance I have.

Here's the clearance of the D368's and a Cardone IROC box.

http://img.photobucket.com/albums/v61/gort69/DSCN0342.jpg

http://img.photobucket.com/albums/v61/gort69/DSCN0341.jpg

Bear with me here; I am not sure I am on the right channel with you. Your power steering bracket is UNDER to engine mount? My gearbox mounted directly to the subfame using 3 bolts (if i remember correctly). Is your gearbox also mounted to the subframe, or just that engine mount bracket? If no on the subframe mount, is there any clearance between the gearbox and the subframe? If there is clearance then you are definitely not going to have the clearance I have.


OOPS. I am sorry. I ment the power steering pump rear bracket is mounted between the block and engine mount. Look just above the engine mount. I was just wondering if that was not there if the header would fit better? Prbably not, just a thought.

Another factor here. My zz4 heads have a .100 raised exhaust runner. Do you think this hurts my chances of getting them to clear also?

Here's the clearance of the D368's and a Cardone IROC box.

http://img.photobucket.com/albums/v61/gort69/DSCN0342.jpg

http://img.photobucket.com/albums/v61/gort69/DSCN0341.jpg


Al. How close is the #1 tube where it goes around the gearbox?

Doug, I can't get in to take a picture of mine like Al can. I have a hydroboost unit, and a large chrome master cylinder in my way. My clearance is about like Al's

AL you are the MAN with that camera. I know you have a hydro boost. I don't know how you took that picture.

Doug you can always remove the exhaust gasket for additional clearance --> just kidding!

It's hard to get my camera in there to get a decent picture. There is more clearance on the number one tube than there is on the 3 & 5 tubes.

Strick - I just stuck the camera down in there and hoped for the best :)

Love that hydroboost!

http://img.photobucket.com/albums/v61/gort69/DSCN0240.jpg

With the P/S bracket removed from between the mount and the block the engine would fit lower. I think that would be cause more of a problem.

Maybe ADD shims between the block and the mount to raise the drivers side of the motor. Would that get you the clearance you need?

My 2 cents,

With the P/S bracket removed from between the mount and the block the engine would fit lower. I think that would be cause more of a problem.

Maybe ADD shims between the block and the mount to raise the drivers side of the motor. Would that get you the clearance you need?

My 2 cents,

Fred. Shims may make the top better, but my real problem lies where the #1 tube runs beside the lower side part of the gearbox. It actually lays right on the box down there!:o

does any body know where a 69 dz 302 crnk a 1178 is email me at bmjohnso@comcast.net

Ahhh!! OOOhhh! Sorry.:(

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That is great info! Thanks for the quick reply. The pictures that were posted tell it all. Looks like Christmas may come early this year!
I am really glad I found this thread.

Thanks again
joe

Al, you have a private message :)

joe

Well, Doug's tech staff really didn't have much to say besides they will not fit with the 825 box. I went and switched my car over to fast ratio manual steering. I now have minimum 3/8 inch everywhere around the gearbox.:D If anyone is looking for a perfect fitting set of headers and has manual steering, i highly reccomend Hedman Hustler part #65003. These things have an awesome fit(with manual steering).

Well, Doug's tech staff really didn't have much to say besides they will not fit with the 825 box. I went and switched my car over to fast ratio manual steering. I now have minimum 3/8 inch everywhere around the gearbox.:D If anyone is looking for a perfect fitting set of headers and has manual steering, i highly reccomend Hedam Hustler part #65003. These things have an awesome fit(with manual steering).

Not to Hi-jack but how is the car with Manual steering?

Not to Hi-jack but how is the car with Manual steering?


Waiting on my driveshaft to come in. I will let you know once i get a chance to drive it. Doug