General Category > Quadrajet Carb Talk and Tips

Increasing cfm

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carmantx:
On the 462, I have 1/2" line from tank to a mechanical pump.
On the 464, fuel cell and braided hose with electric pump and regulator.

Marx3:

--- Quote from: carmantx on September 09, 2016, 04:18:23 PM ---I run mine on a 464 in mid 500 hp range and a 462 at about 500.  I built one for a 570 ci.
If I remember right, there was about 3 hp difference on dyno compared to 950.

--- End quote ---

3hp difference from a 950 cfm! cool.
Do you remember the air flap opening distance?

carmantx:
1.30" I believe.

Marx3:
pheew, that sure means open.
I seem to remember, that the flaps can open too much, slowing down the incoming air. Dont remember at what opening distance this happens.

77cruiser:
Now you got me thinking that I might have mine open too far.

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