[urq] More Weird UrQ Behavior

[AF]

So, at the past 2 track events I've attended with my V8 UrQ I have had a
weird issue with engine cutout at high rpms, usually in 3rd gear, but on the
straightaways in 4th gear. They seem to occur during any throttle position,
like cresting a hill, or accelerating out of a corner, which is somewhat
unnerving. There are no fault codes thrown at all, which makes me think it's
a fuel supply issue. Here's the weird thing, I would say it a fuel pump
relay issue, but wouldn't the engine stall (that's what my old UrQ and Coupe
GT would do on the highway), but in this case there's no power until I
depress the clutch after slowing a little and downshifting, then the power
is all back. The engine never stalls and shuts off! I confirmed it's not a
rev limiter issue by redlining with moderate throttle input and no issues
occured. It's definitely at higher RPM though. Does anyone have a thought? I
thought about relaying the fuel pump, but wouldn't the engine simply stall
with no fuel supply, or will it simply keep running with the car in motion
and clutch out without shutting down or turning on all the warning lights on
the dash?

Any help is appreciated. Thanks.

Andrew Finney
1985 UrQ 4.2L ABZ