Reply to "Weber tuning frustration"

Peter, it sounds a lot like you ran out of gas. I don't know what your engine uses, but be aware that if you're using stock Pantera fuel lines starting with the fuel tank pickup, they are too small in diameter to support much more than about 400 horsepower even if the tuneup is perfect. The carbs will literally run out of fuel after a few minutes (at high rpms) with all-stock lines, and it will happen quicker if you have used some sort of fuel pump pressure reduction for your Weber setup, along with a mechanical fuel pump. While Webers can be adjusted to run at 2-3 psi, a 351-C needs large amounts of volume! I once 'fixed' a real 289 Cobra at a track by simply removing the fuel pressure regulator- which was actually a fuel restrictor- and the car instantly gained 3000 rpms in top gear! I use a 3/8" OD fuel line on my altered Pantera's late fuel sender, in place of the less-than-5/16" OD stock setup. Big lines from pump to carb(s) is good but the engine needs big lines all the way to the fuel down in the tank. Just a suggestion-