How efficient is the stock fuel system on a 1994 z28? I have the cc306 and sometimes it feels like its falling on its face.

 

Your best friend will be a fuel pressure tester, it'll tell you whats going on, first change the fuel filter if you haven't allready, the stock fuel system should be fine & adaquit enough, so spend the 45.00 bucks & get the tester, just make sure you check it with the regulator vacuum hose off ( if a 94 is equipt with one), i'm sure it is.

 

I did not like the small dia stock plumbing, and, the very nonefficient tube bends for Hi-Perf Mod applications. Replaced it with (2) -6an (3/8) Aeroquip socketless hoses (2 walbro 255lph intank pumps), and, all -6an and -8an fittings. The problem was not pressure but volume delivery. Probably OK for NA mild applications. (App... 383 D1 M6 Camaro)