I just installed this fuel pump as an upgrade.
Worked fine for the first 30 miles, now it drops pressure for a few seconds intermittently.

The inlet fittings are tight from the tank
The tank is vented

Pushrod length is 3.120.

Wouldn't the pushrod lose pressure at higher RPM if too short?
No problems before other than limited delivery.

I took it apart to re orient fitting location, did not see anything amiss, went back together fine.

Pump drops pressure for a couple seconds and slowly comes back up at idle or slightly above

Any ideas?

https://www.summitracing.com/parts/crt-m6903