Arvinode Exhaust on a GT

I don't see any reason you couldn't make it work. I don't know the size of the pipes but if needed you could get a shop to bend some pipe extensions and weld to your old tips or get the modified louver version. I just had a shop make 2 extensions for me and it was $20.

If you search the Arvinode story, there were some early GT cars that had the system, and I think the TSB showed trumpets as an option. I was never sure if the trumpets were an option by themselves before the GT came out.

Trumpet tips were not a standalone factory option. Would only have come with the GT equipment option or added by a dealer/owner later.

I am pretty sure the Ford documentation shows the GT tips as an option - but Ford didn't keep the Arvinode around long enough.

I'd contact Walden's directly and ask them - they might work as is or they could modify a set for you to work with the GT tips.

Also, any good muffler shop should be able to modify the rear pipes to accept the GT tips too.

My April non-GT K would have had the replacement system, but I plan to use the Arvinode for the sound and performance - I have never really liked the GT tips myself, so I'll just use the turndowns.

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I am pretty sure the Ford documentation shows the GT tips as an option - but Ford didn't keep the Arvinode around long enough.

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Absolutely not a factory standalone option.

I agree 110% - you are mistaking my meaning - duals of any kind were not an option - without the K motor or GT package. The GT trumpets were never offered seperately either - except maybe by a dealer after the fact - but NOT a Ford option.

What I was referencing is the Ford exhaust illustrations from that time - they do show either clamp on turn down tips or GT trumpets - maybe I'm mistaken in what I remember from the shop manual illustration.

The Arvinode was stopped around the same time the GT package started, I would think they had to be planning to use this system for the GT as well in advance - maybe it is just in the illustration and never made it to production - then again maybe I'm having a senior moment. I think the Arvinode system would have continued in production if less owners had complained.

Does the Walden repop system have clamped turn downs or are they welded?

If they are welded the pipes will have to be cut and adjusted to accept the GT trumpets - otherwise they should work if the tips are long enough to mate up to the pipes without the turn downs.

As I said before - probably best to contact Walden's directly and ask them if it will work or if they can make one for you with the trumpets.

The turn downs are welded

Jack

The 'performance image option' is something I knew about in the 70's, but was not sure what it was. I read someplace (a long, long time ago) that you could get the trumpets as part of that option prior to the GT. What I read may have been the same parts info Mannel refers to. My Jan 65 kar has trumpets but I have no way of knowing how they got there. I know they had to be put on by the 1st owner or the dealer if not factory. They were on the car in 68 according to the 2nd owner.

There was also a prior post that showed an E-bay auction with "ARVIN" option trumpets that had the trumpets and a pattern to cut out the valance.

Bob Mannel posted this in a previous discussion about dual exhaust.

"The April 1965 Ford Master Parts catalog was the one that listed a "Performance Image Option". The system listed was the Arvinode system with the regular H-pipe and trumpet tips. I am not sure if this was just an early name for the GT or not. Ford gave a date of 3-22-66 in its parts catalog for elimination of the Arvinode system, but a date of 4-2-65 for Metuchen and Dearborn, and 4-4-65 for San Jose in its Technical Service Bulletin Article #315. After those dates, the Arvinode front glass-pack was replaced with an oval muffler. I have not heard of a GT with the Arvinode system. Maybe someone here has. The elimination of the Arvinode and the introduction of the GT occurred about the same time.

According to the Ford parts catalog, there were many Mustang dual exhaust systems. The 289 HiPo was the first with a transverse muffler until October 64. Then the Arvinode system came out for the HiPo. There was also an option (called a "Performance Image Option") for the A-code which was the Arvinode system. The Arvinode system was dumped in favor of oval mufflers in April 1965. The GT came out duals as well. By the end of 1965 you had the 289 HiPo, GT (All A-codes), and optional duals for A-codes. HiPos had the unique H-pipe to connect to the HiPo exhaust manfolds, and the GT had the trumpet tips. Performance Image Option also shows trumpets. Looks pretty similar for 1966.

What is needed to really clear this up is a dealer options book for 1965 or 66. Must be one somewhere."

Those exhaust tips that were on ebay appeared to be some kind of prototype, I would be skeptical if they were an actual production line item.

I have a friend in Canada with an extremely early '65 GT A-code fastback. His car has some weird dual exhaust configuration. It is the only one I have seen that *might* have had the Arvinode system.

Regarding dual exhaust as an RPO for non-GT A codes... we've beat this subject to death. I have only heard of one car being ordered like this, but the order was made by someone "in-the-know." I have a copy of the 1965 Dealer list price, which is what dealer's went by when ordering cars and options. This, coupled with original dealer order sheets from 1965, show no single line item for "dual exhaust." It simply was not a RPO. The only way one was *supposed* to get dual exhaust in 65-66 was if the car was any K code (GT or not) or if the car was an A code GT.

As far as I know, there were only 3 dual exhaust configurations for 65-66. The first being the transverse system, second being Arvinode and then the typical 'GT' exhaust. The 'GT' exhaust had clamp on trumpets or turn-downs (if a K code was not a GT.)

Hope this helps with the discussion.

The tips that were on ebay were original Arvin over-the-counter tips that were sold for dealer or customer installation prior to Ford introducing their own. Jim Abbott mentioned them in the taped interviews I did with him and he said that Arvin sold them in conjunction with a valence hole template and the trim ring.

There wasn't much of a window for them to be used ahead of the GT duals, but they are clearly shown in Bob Mannel's book in the Arvinode illustrations.

I have fit the Waldron's system to both hanger locations (early & late dual exhaust rear frame rails) and believe it will work on a GT valence, but have not yet tried it.

Edited by - round2K on 06/24/2009 00:30:31

UPDATE FROM WALDRON'S

We had many requests for Arvinode systems from customers who wanted to install them with GT trumpets. Thanks to the cooperation of Arvinode customer Robert Conrad, we can now offer two additional versions of the Arvinode duals with special rear resonators; one version accepts the standard 1 3/4" trumpets and the second accepts the available 2" trumpets.

We can provide this option at our regular prices (Base: $379 plus shipping, Concours: $499 plus shipping).

These prices do not include the trumpets; customers can order the trumpets directly from their favorite Mustang supplier OR we can procure them for you if desired.

Thanks for your continued interest and support!

Joe

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UPDATE FROM WALDRON'S

We had many requests for Arvinode systems from customers who wanted to install them with GT trumpets. Thanks to the cooperation of Arvinode customer Robert Conrad, we can now offer two additional versions of the Arvinode duals with special rear resonators; one version accepts the standard 1 3/4" trumpets and the second accepts the available 2" trumpets.

Thanks for your continued interest and support!

Joe

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Nice going, Joe. Here's hoping the sales are increasing as the word spreads throughout the Mustang community.

I have followed the Arvinode system with great interest, and was wowed with the youtube clip and the sound produced. But my car has a 347 in it and I have a larger tube system. I would like to know if the parts producing the sound can be fit to a 2" pipe system, or do they need to be sized down? many of us with cars not following the letter of the orginal design are searching for the right sound, and the Arvinode sounds very like what I and others might want, should it be do-able..... anyone else?<img src=images/icon_smile_big.gif border=0 align=middle><img src=images/icon_smile_big.gif border=0 align=middle>

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many of us with cars not following the letter of the orginal design are searching for the right sound, and the Arvinode sounds very like what I and others might want, should it be do-able..... anyone else?<img src=images/icon_smile_big.gif border=0 align=middle><img src=images/icon_smile_big.gif border=0 align=middle>

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You should check out Powerstick mufflers, made by Classic Chambered exhaust. http://www.classicchambered.com/classic/sounds.html

there are some clips on Youtube also. here is a Falcon

It is tough know for sure but you get an idea via video.

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I have followed the Arvinode system with great interest, and was wowed with the youtube clip and the sound produced. But my car has a 347 in it and I have a larger tube system. I would like to know if the parts producing the sound can be fit to a 2" pipe system, or do they need to be sized down? many of us with cars not following the letter of the orginal design are searching for the right sound, and the Arvinode sounds very like what I and others might want, should it be do-able..... anyone else?<img src=images/icon_smile_big.gif border=0 align=middle>

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We now offer a 2 1/4" version of the Arvinode system. It is louder than the 2" system, especially under heavy load/WOT conditions (not that any of you drive your cars under those conditions)

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The outer diameter of the resonators (both the front and rear units) is 3" instead of 2 3/4".

Joe T. - Waldron's Exhaust

I simply solved this bycutting off the turndowns and welded the tips on the rear resonators.

This may not be correct for this 66 GT, but I love the sound.

Pictures of the welding and the tip.

Sorry for the bad photo, but it looks perfect in real life...

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Edited by - toffe on 09/08/2009 16:01:41