Re: mechanical six-pack carbs.
[Re: gearbanger]
#64507
05/29/08 12:06 AM
05/29/08 12:06 AM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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I sent my set of mechanical carbs to Pro-max and had them do their stuff to them including a rebuild. The 493 inch hydraulic cammed motor they are on dynoed out at 681 hp/682 ft.lbs of torque at 5500rpm. I assume the vaccum advance models would produce the same output. The differnce is in the drivability. I like the control I get with them. They do require some thought to use effectively, but they teach you how to drive them by the seat of your pants. Too much too soon, and you feel it. Crisp is a good word to describe the way they feel. A set of well set-up vacumn carbs don't require much skill. You just mash the pedal and they do the rest. Mushy sounds about right to describe the difference.
I ran a set of the mechanicals back in the late '70's early 80's and absolutely loved them. One day the outboards stuck open on the freeway, which gave me a feeling that I'll never forget. I had to stomp on the pedal again to get them to release. What a ride!
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: mechanical six-pack carbs.
[Re: JohnRR]
#64508
05/29/08 12:46 AM
05/29/08 12:46 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
you are correct , you can't change them to vac operated . you can drive with them on the street , but you might just sell them and buy a new set of vac carbs ?
why not just use a progressive linkage? cheap/ easy/ fixed.
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Re: mechanical six-pack carbs.
[Re: gearbanger]
#64510
08/04/08 08:51 PM
08/04/08 08:51 PM
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Joined: Sep 2006
Posts: 1,139 West Tennessee
rbstroker
super stock
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super stock
Joined: Sep 2006
Posts: 1,139
West Tennessee
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I am intrigued by the idea of mechanical linkage opening my outboards instead of the stock vacuum. Is there a mechanical linkage conversion setup available for the stock 1970 six packs?
This is the land of the free
because of the brave
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Re: mechanical six-pack carbs.
[Re: rbstroker]
#64511
08/04/08 09:00 PM
08/04/08 09:00 PM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Some people used to use a mechanical linkage on the stock carbs to force them open before the vacum would kick in and do it, but with no accelerator pumps on the outboards you are going to have transition problems. Getting your vacum cabs set-up properly is a drastically better solution.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: mechanical six-pack carbs.
[Re: gearbanger]
#64514
08/05/08 06:14 PM
08/05/08 06:14 PM
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Joined: Nov 2006
Posts: 511 Jasper, Indiana
fastnos
mopar
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mopar
Joined: Nov 2006
Posts: 511
Jasper, Indiana
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Hi there. Do you have a complete setup right now, or just the carbs? Here is a sight, all tho it's for Ford Carbs, that has a lot of great pictures and technical info that might help. http://www.gerlecreek.com/documents/tptechnical.htmOne question I have is do you know much about carbs right now? The reason I ask, is by time you get them on and tweaked just right, you will know the carbs inside and out. Some people buy a used setup and then pull their hair out because of problems (previous owners) which is sometimes why they were for sale in the first place. It takes a lot of perserverance to work and get them just right. But having said that, when they're right, they are AWESOME! You might have to mail order a few parts also, looking at where your from too. Promax and Quick-Fuel make great products that will cut your tuning probems/troubleshooting time to a minumum. If your not real familiar with tuning carbs, you may want to send them off to Promax and have them set them up initially. Promax has a dyno they can test each carb you send them prior to getting them back. It just depends on how comfortable you feel tinkering with them. Here's a book on E-bay you may want to look at also. May be availiable other places on the 'net also. E-bay # 270261211020
A True Hybrid: Burns Gas AND Rubber!
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