Does any Holley 4150 dual feed fuel line fit these? I have the BDQ 850 Quick Fuel carb and don't see anything for it specifically, however I am not wanting to order a fuel line just to return it.

I'm not sure what the adapters that come with the QFT bowls are, but like older holley bowls, you can screw a 7/8-20 line or fitting into the QFT bowls.

Thats what I thought, I figured 4150 was 4150. The line set I'm looking at is 8AN to 7/8x20

You could always call quickfuel and ask them

Go find a Holley fuel bowl fitting and try it. I must have a dozen of them floating around in my garage. Someone in town must have one.

I know the bowl fittings are 7/8x20 I was wondering about the width

run a flexible one like this, get a name brand one if that's your thing...


be sure and pull the allen screw out of the port for the gauge hookup and put some thread sealant on it.

ebay fuel line

Why #8 AN? 6AN line I.D.(.375) is way bigger than any needle and seat size I've seen or heard of

Cause that's what I used. No real reason why, all of my line is 8AN except the 10AN feeding the pump

It can & does vary depending upon the type of fuel bowls being used.

The early (standard) Holley bowls and the common less expensive aluminum bowls used on some QF and others' carbs are the same distance between fuel fittings. The later Holley Ultra H/XP aluminum and QF's "Fuel Chute" bowls are spread farther apart between fitting due to increasing their fuel volumes.

The Holley Ultra H/XP and QF "Fuel Chute" bowls don't use the traditional 7/8 x 20 fittings, either, IIRC.