tips for starting rebuilt carb?

[73goldduster]

i've got a holley 390cfm with elec. choke that i got used and rebuilt. i'm using it on my slant six that has just had a newly rebuilt top end (head, cam, intake, exhaust) bolted up.
the issue that i have is that to break in the cam properly the engine has to run nonstop for 30 plus minutes at 1000 rpm.
i've checked the holley website for tips and found some basic info, but was hoping to get some more advice from here.
thanks for any tips you guys may have!

 

[Purple Haze]

So what's the problem, just fire it up bring up the RPMS and adjust the curb idle screw to hold it.

 

[green1]

Take a small funnel or pet syringe, and fill bowl. While breaking in, make sure timing not retarded.