"VOE" Exhaust - Bear's Version - Pontiac GTO Forum
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post #1 of 16 (permalink) Old 08-11-2011, 09:31 PM Thread Starter
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Talking "VOE" Exhaust - Bear's Version

Some of you probably know that for a very brief period of time, 1970 GTO's could be optioned with somthing called "Vacuum Operated Exhaust" - VOE. It consisted of special mufflers that had vacuum operated diaphragms on them that the driver could control via switch to, shall we say, make the car sound "more interesting". You can find on Youtube a commercial that aired back in the day, titled 'The Humbler'. The factory pulled the option very quickly.

I've recreated on my car something similar. Although it's not the same as the original option, it's true to the spirit of what it was about.

Here's a video where I tested it today. Enjoy


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post #2 of 16 (permalink) Old 08-12-2011, 02:09 AM
 
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SWEET!!! that outta open some eyes at the drive in burger joint...
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post #3 of 16 (permalink) Old 08-12-2011, 05:54 AM
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I think I have a new ringtone for my phone.

I thought it sounded [email protected] though the muffs but when you open up the cutouts..... pure sex dude. That'll rattle some windows!

What kinda mufflers? They sound good and that cam is just lopen it's @ss off.
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post #4 of 16 (permalink) Old 08-12-2011, 08:02 AM Thread Starter
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Thanks guys

Alky those are Pypes Race Pro mufflers. According to them, they're the quietest ones they have but also the ones that flow the best. How they pull that off I don't know, but they're sort of cool in how they seem to work. At idle, low load, they're fairly quiet, but when you hit it they almost seem to "open up". The motor wasn't completely warm in the video so it was loping a little more than it does once it gets up to temp, but even then it still has a good bit of attitude. That's a Comp Cams "Mr. P-Body special" solid roller. What I like so far is the way it seems to instantly respond to throttle movement, and also the nice wiiiiiiide torque curve it has across the sweet part of the rpm range.

Ya know? Sometimes I get a little discouraged because it seems like I'm "never" going to get this thing together. Listening to it run always helps get me out of that funk

Bear

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post #5 of 16 (permalink) Old 08-12-2011, 08:28 AM
 
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Bear,

I have no speakers on my computer here at work

So...I pulled it up on my handy dandy smartphone, cause dang it I was not gonna miss this!

That sounds completely BAD @$$ love that set up. I may need to compare notes with you about your "driver control system" ... I love good old American ingenuity.

And I am glad you find subtle ways to make it through your moments of sadness and blues. I just go out and hop in my 2005 GTO, leave a little rubber here and there and dream.

Very Nice my friend, Very Nice!

Scott
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post #6 of 16 (permalink) Old 08-12-2011, 09:40 AM
 
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Bear, Sounds sweet.....leave 'em open and you won't have to worry about a "sound System"! Eric



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post #7 of 16 (permalink) Old 08-12-2011, 10:51 AM
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Sweet!!
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post #8 of 16 (permalink) Old 08-12-2011, 08:50 PM
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That's TOO MUCH!! Now you can sound just like Popey Doyle in his Pontiac LeMans during the car chase in The French Connection when he's rolling along at about 105mph underneath the "L" in Chicago......Excellent. BTW, if you guys go to youtube and enter "Humbler GTO" you can watch the commercial from '70. Pretty juvenile, but waaaaay cool. Bear, get out and drive that Black Bomber!!!
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post #9 of 16 (permalink) Old 08-13-2011, 10:22 PM
 
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Sounds really good. What is the difference in your setup and say electric cutouts? I never heard of vacuum controlled cutouts. Pretty cool though.

Jarred "Hot Rod" |1970 Pontiac LeMans Sport | Just a 350...
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post #10 of 16 (permalink) Old 08-14-2011, 02:00 AM
 
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BEAR THAT IS JUST TOO SLICK, MY FRIEND.



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