We're building a SBC powered S10 with a 4150 Holley 650 DPDF carb. I've heard a lot about the new three line regulator fuel delivery systems that dump the excess fuel that is not being used by the engine back to the carb.

What is the sequence of componet installation for this system: regulator before or after a fuel log the carb? I plan on a 8 AN supply line with a 6 AN return line. 8 AN because we hope to someday put a NOS system on it.

Any pictures, links, advice will be greatly appreciated.

 

pics in my sig.

mallory #4309 3 port regulator....do a search on it, there's been tons of threads about it. One port goes to the fuel log, and the return comes out the bottom of the regulator.