It's time to get a new carburetor for my y-Block. The current 600 cfm Carter AFB  has seen better days and is leaking at the throttle shafts.   It has given 20 years service.

I have a mildly upgraded 272 Y Block in my '54 F100.  It has been balanced and rebuilt by Ted Eatonusing big valve heads and a mild cam upgrade. I am using the FORD ECZ-9425-B intake manifold.  It is used for cruising and towing a boat, soI don't want a fire breathing dragon, and fuel economy is nice. 

I am considering trying one of the Demon Fuel Systems  "Street Demon 625 cfm"  #1900 4 bbls.   Does anyone have any experience with thiscarb on a Y-block??  Does it have thelarge vacuum port for the Y-Block PCV system hose (The Carter has a big vacuum port in its base)?  Is this too much carb cfm for a 272?

Any other 4 bbl.  carbsI should be considering that offer simplicity with a combination of performanceand economy?

Thanks and regards, Jeff