Edelbrock Pro Port

[Cobradriver]

I'm super curious about the plug wire boot contraptions on the bowl vents... Just when I thought I was pretty much a carb expert... I would not be the least bit shocked if that was an original idea from Mr. Patrick either... Still would love to know what in the world those are intended to aid... If I had to guess, has something to do with stabilizing pressure to bowls so the jets flow *more* consistently when air velocity picks up...? I can see that eliminating a few moving targets tuning wide if that's the case...  If willing to answer, but maybe not on the forum... You know where to find me!

Awesome work, so much admiration/appreciation for the kind of work shown in this thread.

I have a similar setup on my current combo. The car stops so well that the fuel pours out the vent tube and wreaks havoc with the idle speed. I haven't really noticed any change in the wideband readings with or without it (other than decel).

It was also pretty popular on the vintage road race cars with Holleys I worked on many years ago...

[fekbmax]

Very common trick used for many years, typically with a piece of fuel line.

[Coreyc619]

cool... thanks for sharing fellas. I'd never seen it before.  I guess what is common for some remains unseen in other areas of the country... been to a lottttt of race tracks, worked on a lottttt of cars over the years.  Just a new one on me.

Seems like it wouldn't be needed for dyno time if the only intended function was decel etc, but... in this case, maybe with the power these motors are making, could be for launch?  Wheelstands maybe?  I jumped straight to stabilizing what's going on in the bowl, based on a set of customs I did for an outboard engine with the bowl vent facing forward.  Mid range would go fat no matter what I did with the air circuit.  That one took forever to finally figure out.. ended up driving brass into the forward facing hole, and drilled a separate hole just behind, but laterally to external source, and away from incoming air.  It worked.

I'll have to experiment with this in the future, for fun.

[e philpott]

Very common trick used for many years, typically with a piece of fuel line.

Did the fuel hose trick on my brother Maverick and fixed it right up , he was dumping fuel from the vent to Venturi on big wheelies over 3 ft , hasn’t bogged on a big wheelie since

[wowens]

Used hose a lot if times, the spark plug boots and brass tubing is just cool !