[bracketchev1221]

Being out of the street car crowd for 20 years, I have an 850 that is almost new. Is there any way to upgrade the 850 to a 1000cfm carb with a main body change? Trying to stay away from a new carb but not sure what 950’s are 950 and not 830 or anything else. Thanks

 

[mrpaticular]

You did not give much info on what you have so I am guessing it is a stock double pumper.
Can you change the idle air bleeds on your current carb ?
As far as changing the main body, the flow you want might be reduced by the current base plate.
Rick

 

[68Chevele]

Being out of the street car crowd for 20 years, I have an 850 that is almost new. Is there any way to upgrade the 850 to a 1000cfm carb with a main body change? Trying to stay away from a new carb but not sure what 950’s are 950 and not 830 or anything else. Thanks

Holley is having a sale on main bodies right now. I got this one for a pretty good price.

I also got this 2 of these last fall for $63 each both are 850's but with the right base plate they could become a 1000hp

 

[396325]

How much motor are you building to warrant 1000 CFM? You might be surprised how well your carb works on a pretty stout engine.

 

[bracketchev1221]

I thought the 850 and 1000 use the same baseplate?

 

[Malibu ss 64]

This is listed as an upgrade for 850 cfm and should be a direct replacement

Holley 134-302SA Holley Aluminum HP Main Body Retro-Fit Kit-850 CFM

Want to upgrade your street carburetor to a high-performance race carb, but don't have the means to do a complete carb swap? If you can turn a screwdriver, you can get increased horse power from the new Holley Aluminum HP carburetor main bodies. These aluminum HP main body retrofit kits convert...

www.holley.com

Brawler but not sure if its direct replacemt with your current carb?

Brawler BR-67108 Brawler Aluminum Main Body

These aluminum main body retrofit kits convert your existing double pumper to an aluminum main body for increased horsepower, torque & airflow. With no air horn, choke tower, or choke control to restrict airflow, they deliver extra power easily and affordably. These aluminum main bodies are...

www.holley.com

Brawler BR-67218 Brawler Aluminum Main Body

These aluminum main body retrofit kits convert your existing double pumper to an aluminum main body for increased horsepower, torque & airflow. With no air horn, choke tower, or choke control to restrict airflow, they deliver extra power easily and affordably. These aluminum main bodies are...

www.holley.com

proform should be direct replacement

https://www.proformparts.com/product-detail/67107C/carburetor-main-body-for-use-with-holley-850-cfm-double-pumper-model-carb

Im sure BLP has something that work to

BLP, Xtreme Performance Made In USA

BLP : - Gift Certificates Carburetor Parts BLP Racing Carburetors Fuel Pumps Engine Drive Accessories Engine Hard Parts Specialty & Carburetor Tools Apparel Clearance Blowout Fuel Filters Air Fuel Ratio Gauges ecommerce, open source, shop, online shopping, store

blp.com

 

[DraggedDown]

I thought the 850 and 1000 use the same baseplate?

I got a custom carb from BLP about a year ago. They built me a 1060 and I was told on the phone they'll use an 850. I'm not overly familiar with all the nuances, so I would recommend giving them a call and see what they say. They may be able to take what you have and build to what you need or at least give you some direction. They're a nice group over there.

 

[bracketchev1221]

I got a custom carb from BLP about a year ago. They built me a 1060 and I was told on the phone they'll use an 850. I'm not overly familiar with all the nuances, so I would recommend giving them a call and see what they say. They may be able to take what you have and build to what you need or at least give you some direction. They're a nice group over there.

Yeah they may be able to let me know the differences between them. I’ve run dominators for the last 22 years and didn’t have a motor that needed more than the modified 850 I have now before that.