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Old 06-07-2013, 11:56 AM   #1
Maxian
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Holley 750 carb. What's missing ( picture )

Just took this off the shelf. Been a long time since I played with a vacuum secondary.
Can somebody please tell me what, if anything is missing. Linkage etc.
Pictures would be awesome.
Btw, only comcerned about the vacuum secondaries working.

Thank you,
Brad
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Last edited by Maxian; 06-07-2013 at 12:00 PM. Reason: Additional info
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Old 06-07-2013, 04:45 PM   #2
mdeal
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Re: Holley 750 carb. What's missing ( picture )

All I can tell that is missing from the pictures is the choke. You could replace it with either a manual choke or an electric choke. Or you could just leave it off. (Cold starts will be a pain without it).

It looks like it needs a good cleaning and maybe a rebuild kit and you'll be driving!
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Old 06-07-2013, 09:20 PM   #3
prostreetC-10
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Re: Holley 750 carb. What's missing ( picture )

Hopefully you don't plan on trying to run that as is! You have one of the three screws that hold the vacuum housing to the main body missing. The tiny cork gasket that seals the housing to the main body is probably super dry. You are also missing at least one of the screws that hold the plastic top of the vacuum housing to the pot metal low part. Would be interesting to know what kind of shape the vacuum diaphragm itself is in. Since some screws are missing, makes me wonder if someone has been messing with it and if the steel check ball is in place or even if the diaphragm tension spring is in there.

Yes....I'm a Holley expert. lol
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Old 06-07-2013, 10:56 PM   #4
Toxic Orange
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Re: Holley 750 carb. What's missing ( picture )

Looks like the choke was deleted on purpose. Secondaries look to be intact short of the missing screw. Rebuild would be advisable or the thing may drive you crazy even trying to get it close to tuned.
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Old 06-08-2013, 12:20 AM   #5
Maxian
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Re: Holley 750 carb. What's missing ( picture )

Thanks guys.
Rebuild is on order. This has been sitting for 12+ years. Just pulled some carbs off shelf and this is the best match size wise.
Just wanted to make sure nothing major was missing.
Again, thank you
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Old 06-08-2013, 09:16 AM   #6
prostreetC-10
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Re: Holley 750 carb. What's missing ( picture )

Last quick thought. Many 4160 rebuild kits don't come with the vacuum diaphragm as part of the kit. Makes sure and buy one that does. You want the diaphragm that has a "330" stamped on the rod or just buy one for a 750 vacuum part number and you should be okay.
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