Recently bought a '96 z28, the guy before said he installed a Granatelli intank pump, the 255 lph, but when you start the car after it sits for a while its takes a while for it to turn over. If you let the pump prime for a second then turn it over it dosent take as long, but still takes longer to start then what seems normal to me. Anyone have any ideas on this?? the pump only has like 3k miles on it, i know the stock one burned up before this one. Anyway the Granatelli could be going to same route? Let me know what u think guys thanks

 

Yeah it sounds like its losing pressure in the line after you shut it off causing it to have repressurize the system when you try to start it back up, could be the pump but I would change out the Fuel pressure regulator first.