high speed miss

crackedback said
CHANGE THE OIL NOW! How old is the fuel pump. If it's busted the diaphram, it may be leaking fuel to the crankcase.

Get the baseline carb adjustments set. Float level, 1.5 turns out on mixture screws.

I've got the idle screws 1.5 turns out, the float level on this Holley can't be adjusted w/out taking it apart, so I've left it for now. I am going to change the fuel pump (it looks new but...)

crackedback said
Could be any number of things. Start with getting a good baseline timing set up. Say 10-12 minimum before TDC. If you have a vacuum gauge set it to the highest point advancing the distributor then backing it off one inch, while keeping the idle RPM constant.

I have it set at 10* BTDC right now. I've been everywhere with it, no change in the miss

crackedback said
Do you know how much mechanical advance is in the distributor.

I don't know and don't know how to tell.

crackedback said
The internal distributor plates are known to move around a bit. If they aren't solid and the air gap is changing, it could cause a miss. Bad cap/rotor, rotor phasing.

I did set it to .008 to .010 but only on one tooth. rotor and cap look new, I didn't see any carbon tracks on the cap but cant rule either one out yet.

crackedback said
Since you say you have to back out of the throttle, what exactly happens. Can you roll back into the gas and it picks up. Does the thing basically shut off at 3K?

It basically shuts out at 3 grand. if you let off its cruising but as soon as you give it more it starts cutting out again. Like a governor. Thanks for the food for thought. I'm gonna get a fuel pump first thing. We'll see what happens from there. again Thanks.