(loud, booming voice from above) BLAAAAAAAAAST FROM THE PAAAAAAAAAAAAAAAAAST!
Figured I'd dig this one up to post some interesting notes on the Blazer during the past nearly 4 months. It ran mint all winter long. Better than I ever imagined. Throttle response was EXACTLY how I like it - very light light pressure on the pedal, but yet a noticeable torque pull. Plenty of power everywhere. It's what got the idea in my head that maybe I should sell the Silverado for something 40 years older. It was that enjoyable to drive.
Now fast forward to last week and the warm spell. With the warm weather came the same surging, and eventual stalling on every hill. It progressed to where my wife would have to pull over & restart the engine on every grade on the way home ... which is pretty damn annoying. So that prompted me to blow the dust off that Walboro FRB-13 pump that's been collecting dust on my kitchen table for the past 4 months. Installed it yesterday, plumbing it through the old pump, and cutting the wire to the in-tank pump, then re-routing it to the frame rail where I mounted the Walboro. It's a noisy one, but it works. Took for a test drive .... seemed down on power, but no stalling or surging. So wifey took it to work today and had the exact same issues as before.
So that brings us to now. My next course of action is to source power from a different location. If that doesn't work, drop the tank ( of course, she just filled it today - but you knew that was coming ....) & see if something is blocking the sock. While I have it down I'll probably just cut the pump out & fabricate a pickup tube out of some 3/8" brake line I have laying around. Now if all that doesn't work, I'm back to an electrical problem. First place I'm looking is that $60 distributor assembly. Stay tuned .....