Do I need a regulator for an AVS at this pressure?

[Secret Chimp]

I'm about to replace the old BBD on my station wagon with a Performer manifold and a Carter AVS 4966S (625cfm) that I just finished rebuilding.

I checked my fuel pressure tonight and the pump is putting out a fat 7 psi at fast idle. I read somewhere that AFBs are set up to run on 5 psi - I couldn't find anything about pressures for AVSes. Some people claim the allowed range for bigger Hemi or performance 440 AVSes was as high as 8 psi.

Should I buy a pressure regulator before I try running this thing, or should it be OK? The little BBD has managed with this pump fine without flooding, but I don't want to be stuck walking to the parts store after my first fire on this thing.

 

[Meep-Meep]

Naw, you'll be fine. I'm running 7.5 PSI with my Eddy AFB.

 

[bigmanjbmopar]

The book says to stay in at 5.5 I have a reg on mine and it's fine. it came as a set so at 7 you should be fine. Do you have the dual feed line?

 

[lewtot184]

depends on the size of the needle and seats. .097 i'd keep it around 5-6lbs. .110 will take 7-7.5lbs.

 

[Secret Chimp]

If .110s are the "high flow" ones this one doesn't have them. It's a low-performance model off of a New Yorker.

 

[67 coronet]

If .110s are the "high flow" ones this one doesn't have them. It's a low-performance model off of a New Yorker.

if you just rebuilt it with new needle and seat you should be fine.1 or 2 psi will only bypass worn needle and seats,not new ones.

 

[lewtot184]

If .110s are the "high flow" ones this one doesn't have them. It's a low-performance model off of a New Yorker.

the original avs on my 69 r/t has the original needle and seats and they are .110. i was surprised because i thought they all were .097. edelbrock has a .110 needle and seat availiable that would work if needed. if your not having any issues then i wouldn't worry about it. if you have a stock type 2 valve fuel pump they only put out 5lbs max. maybe you have a "happy" pressure guage?