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Which carbs flow what? #1265796
07/11/12 03:33 PM
07/11/12 03:33 PM
Joined: Feb 2009
Posts: 1,532
off the grid
340B5 Offline OP
pro stock
340B5  Offline OP
pro stock

Joined: Feb 2009
Posts: 1,532
off the grid
I'm thinking my engine could use a bigger carb, but I'm confused as to which carbs flow what CFM. For example, my 750 Proform main body is supposed to flow 775 CFM. So what does a Holley HP flow as opposed to advertised? Do all the Quickfuel/Proform flow a little more than the rating?


Yeah, it's got a smallblock.
Re: Which carbs flow what? [Re: 340B5] #1265797
07/11/12 04:26 PM
07/11/12 04:26 PM
Joined: Jan 2003
Posts: 31,046
Oregon
A
AndyF Online content
I Win
AndyF  Online Content
I Win
A

Joined: Jan 2003
Posts: 31,046
Oregon
Look at the venturi size and the throttle bore size. That tells most of the story.

Re: Which carbs flow what? [Re: 340B5] #1265798
07/11/12 08:04 PM
07/11/12 08:04 PM
Joined: Aug 2006
Posts: 2,141
junction city oregon
V
viperblue72 Offline
top fuel
viperblue72  Offline
top fuel
V

Joined: Aug 2006
Posts: 2,141
junction city oregon
What is the engine, because a 750 with hp main body is a good carburetor. I went from a 750 hp to a 950 and regretted it. Gained .05 in the 1/4 but throttle response was much less and gas mileage sucked. And this was a low 11 high 10 second duster with a smallblock.

Re: Which carbs flow what? [Re: viperblue72] #1265799
07/11/12 08:11 PM
07/11/12 08:11 PM
Joined: Feb 2009
Posts: 1,532
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340B5 Offline OP
pro stock
340B5  Offline OP
pro stock

Joined: Feb 2009
Posts: 1,532
off the grid
374 ci. Stroked 340,.040 over. I was thinking 800-825 would be better. I know I can "get by" w/what I got.


Yeah, it's got a smallblock.






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