hi i have this 87 k5 with a carbed 350 (quadrajet) bored .60 over rv cam 882 heads edlebrock performer intake. im havein problems goin up hills and wot likes to suck the fuel bowl dry i have a electric fuel pump and regulator set at 5psi and the fuel pumpm pushes 30gph and i was reading that the block mount pushes around 50gph could that be my problem? need nemore info just ask and thank you

 

With an upgraded motor it doesn't sound like a good idea to be running a pump that is running such low numbers. I would think you need 60gph or more, along with that you could probably up the pressure another PSI. Hope someone can give you a bit more specific advice.
With regards, Cyrus