Very Rare Holley 780 CFM Vacuum Secondary Carb.

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Very Rare Holley 780 CFM Vacuum Secondary Carb.

Post  supervel45 on March 31st 2016, 2:25 am

https://www.dropbox.com/s/jbrnfjlni7kfd0y/2016-03-30%2021.59.21.jpg?dl=0


Forgot I had it laying around. Pulled it completely apart and cleaned and inspected it meticulously. Every thing except accelerator pump diaphram and power valve in excellent condition. This is a quasi emissions performance carb. with 600cfm size primaries and 800cfm size secondaries with a square flange base and Ford A/T kictown provision. With a mild 460 you should see double digit gas mileage, maybe even in the teens, that only might be surpased by a Quadrajet carb.. These carbs are rare and the only ones that I know that are harder to come across are the 6708 and 6709 650cfm and 750 cfm double pumpers with Ford A/T Kickdown square flange spreadbore. These ( This one and the 650 cfm version ) are their Vacuum secondary brothers. It will include a chrome fuel line with gauge port, spare metering block and metering plate/rear bowl gasket and I will get a new power valve the size of your choice ( it has a 7.5" now ) as well as a new accelerator pump diaphram. All other parts are in good runable condition, and it also has high flow needle and seats. It has 66-2 jets ( factory stock ) and a #42 metering plate. I will include some larger jets also.

More Pictures Coming soon.

Date Code: 2997

$175.00 plus shipping.


Last edited by supervel45 on April 10th 2016, 11:59 pm; edited 2 times in total

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Re: Very Rare Holley 780 CFM Vacuum Secondary Carb.

Post  supervel45 on March 31st 2016, 3:08 am

https://www.dropbox.com/s/r0gd0b10xvlt1xh/2016-03-30%2019.43.46.jpg?dl=0

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Updated Pictures

Post  supervel45 on March 31st 2016, 9:11 am

https://www.dropbox.com/s/03vl4jotg9jnx08/2016-03-30%2021.58.46.jpg?dl=0

https://www.dropbox.com/s/in35gaqg0ps8dqp/2016-03-30%2021.58.57.jpg?dl=0

https://www.dropbox.com/s/cxw2r4n4spcqkvb/2016-03-30%2021.59.01.jpg?dl=0

https://www.dropbox.com/s/aa9mb2pejb1l7xe/2016-03-30%2021.59.07.jpg?dl=0

https://www.dropbox.com/s/yoybjxovdm4rk51/2016-03-31%2006.16.24.jpg?dl=0

https://www.dropbox.com/s/uyocrrqsjwi3f7c/2016-03-31%2006.16.33.jpg?dl=0


https://www.dropbox.com/s/dtyusicego12840/2016-03-31%2006.16.57.jpg?dl=0

https://www.dropbox.com/s/fprfhvpdqtyhgh8/2016-03-31%2006.17.07.jpg?dl=0

https://www.dropbox.com/s/xp66dppwcao3l3p/2016-03-31%2006.17.16.jpg?dl=0

https://www.dropbox.com/s/279g10bkyd3mf2q/2016-03-31%2006.17.45.jpg?dl=0

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Re: Very Rare Holley 780 CFM Vacuum Secondary Carb.

Post  gt350hr on April 1st 2016, 12:31 pm

I use one of these now and have to say it out performs the original Motorcraft carb by a 100% It is on the stone stock '78 460 in my car hauler. Throttle response is excellent and economy did improve. I sold these when they were new in the '70's at the speed shop I was working at. There was a double pumper version list # 7011 that is far more rare.

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Re: Very Rare Holley 780 CFM Vacuum Secondary Carb.

Post  supervel45 on April 1st 2016, 1:45 pm

^^^^That's what I was saying GT. there is a DP version List #6709 also, rare as hen's teeth.

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Sold

Post  supervel45 on April 10th 2016, 11:57 pm

Sold.

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