Racing Fuel Systems

Its there 3 emulsion bleed ones that comes in a kit with rear power valve blocked off.

Should be a number 2 taper like most 2 circuit blocks.

Whats its need to feed a FX 4711 , Thinking of converting to 2 circuit or limiting restrictions on 3 circuit blocks. I can measure original angle channel easy.

Was thinking .170 should work.

Too complicated for me, i'm way below 900 hp so restricting the 3rd circuit and changing its airbleed should work well on the street. Guess I'll start off with bigger jets, might take out some hsb as well

Thanks Mark for putting the Info out there. i give credit where credits do.

Mark modified my 2.125" bore 1250 HP dominator with BLP wide body metering blocks that can be 2 or 3 circuit. It is 2 circuit. While he had it, he also changed the boosters to ones that have more and smaller holes around the inner perimeter and put his own special touches on it during rebuild. This carb has worked perfect for 4 years. It has .166" main well and angle channels I believe. I have also used it with an E Z Plate restrictor system with bores from 2.125" to as small as 1.437" with good results. My 1050 dominator is also 2 circuit. I have used these carbs on the dyno on engine making 900+ HP.

Was your carb a QFX carb? Just making sure fuel is delivered the same way as the older ones. Already have new quick fuel 2 circuit I wouldn't mind using even if I haven to pull the cups and enlarge the main wells, angle channels I've enlarged before. Just not much info on these out there. Will have to check to see if the 2 circuit has tubes in the wells, looks like the 3 circuit dont from looking in the main jet holes. Thanks for the advise!

Mine is a black coated Holley, not a Quick Fuel. 2 circuit blocks do not have tube in main well as far as I know. If you look at the cups in the top of the metering blocks, solid ones have tubes, cup ones don't as far as I know.

Yep the stock ones have tubes in its wells like thought. Be a pain the pull them to drill angle channel so there not damaged. These blocks have Intermediate Jets beside the Jets. Not sure which to restrict, I bet the main ones on other side I guess I'll just take out the IAB and get a Wide band to measure and go from there.