I have a 67 400 Convertible. Any suggestions for a good street legal header/exhaust set up? You guys have provided me with great advise and I very much value your expertise. Thanks.

I'm going to say that for overall fit and trouble free operation, go with a set of long branch manifolds, especially if you've got a nice, mostly or more original type 'bird that you like to drive for enjoyment. They're heavy and may not flow as good as a set of headers, but the rewards are there in my opinion.
From a performance standpoint, I see the 'X' pipes
are getting very popular and I can see why. There have been some recent posts that get deeper into the subject. You might flush them out.

Depending on the budget, Long Branch manifolds are great, and if cost effective, I might change over to them...

But if the budget is not there for that, then the next suggestion would be Hooker Super Comp headers (but still expensive) and then Headman good fit and finish anf good on price. You might save enough with them to get them coated and would be set. I've had both Hookers (which I have now on my 67 drop top) and the Headmans on my last bird. No problems with either... no leaks, minimal clearance issues etc.

It will be a tight fit, and the drivers side will hang down closer to the ground... so just expect that. Get locking header bolts, copper gaskets, and your set!

Oh, and I have an "H" pipe and 2.5" exaust that fits under my "X" pan...

Brett - 67 Drop Top 455!

I really want to do it right. I'm not so worried about budget as I am getting it done right. Except for an Edelbrock intake manifold and a Holley 4BBL everything is original. Nothing's to good for my Bird!!!!

Can someone post photos of X-pipes installed under a bird? I'm interested in how they are tucked in.

Pypes has a system, SGF70, that looks pretty nifty http://www.pypesexhaust.com/sys-fb1.html
Anyone had any experience with tihs?

I've been seeing quite a few postings about long branch manifolds. How is the flow/performance/sound vs. Hooker/Doug's or comparable headers? Thanks.

I think the major difference is where your sound comes from. With headers you get a lot of 'sound' in the engine compartment. With manifolds you can adjust the sound with the mufflers and your engine compartment is quieter. I like the manifolds because it's easier to hear the real engine sounds for detection of trouble and troubleshooting.

Jim is corect as far as a cheeper header goes. I have dougs on my 400 and they are very quite in the engin bay. I think it has to do with the thicker pipe and a heavy mounting flang that gives a good seal.

check out the install at the link below

Jim Goodrich 67 conv 400


http://photobucket.com/albums/v31/goodbird67/

Hey Shunt...

Double check the SGF70 fitting a convertible. I didn't see it on the page.

They do sell spacers to drop the convertible brace, but it will disable the parking brake.

I called the "guru's" at Pypes and the SGF70 works on the convertible.

Mr. Goodrich's (8point) looks great to me... just a slight spacer.

http://www.pypesexhaust.com/gallery/gallery39-07.jpg
this one spaces it so far down it looks to me like it's not really so much of a brace as it is a decoration.
just my opinion. I have a 6cy coupe, so what do i know anyway