lossing power w/ high rpm...help please!?

If cylinder #1 is at top dead center, then the rotor should be on #1 (combustion stroke) or 180 deg off (exhaust stroke). I will be checking the vacuum advance out on mine, slight hesitation & power loss in higher rpm.

I've posted some other things on

Sock is on the end of the fuel pump in your tank (if you have a fuel pump in your tank).

Ok so I messed with my distributer and tied all my plug wires away from the manifold....could it have been my wires were touching it and getting too hot!? Drove my truck to work this morning and i t ran great! Lmao @ Myself if that was my prob....now I need a weber carb and header asap! Where can I get these items for discount?

Fuel inlet filter "sock" would be inside the tank, even with a mechanical fuel pump. Mine (1988 B2200) was in the tank. And I mean "in" the tank, just sitting on the bottom, apparently it had lost its grab onto the fuel inlet pipe and had fallen, maybe a decade ago. Luckily, there is absolutely no rust in my tank (photos of its inside actually posted on my thread about this, because I'm in Arizona).

Maybe your spark wires were jumping spark to the manifold (which is grounded, negative) and tying them up moved them farther away. One way to have checked for that (before you moved them away) is to run the engine at night and check for sparks visually; this is easier if the truck is in neutral so your legs don't get tired or you don't get run over. You can mist water in the area to make such sparks more apparent. I've seen this happen on other vehicles with bad wires, and the little spark wire mounts are there for a good reason !!!

If it's running good now, I wouldn't "search" for a cause, intermittents are tough, wait until it happens again (if it does). As Yogi Berra would say "it's tough to find something that's not there !!!"

Just my suggestion on wires.I use accel wires 8mm and buy a set for a V8 so I have two sets.Cut to length,crimp ends and reuse boots and lithium grease to slide boots on wires.I also use a accel coil.The normal auto store wires are umm useless,and weak.I am using the yellows now and for the last couple years.Just my share on upgrading wires bc it will not be a bad investment by any means.