Originally Posted by LordTTK
And the gauge don't show any boost when i drive it down the road under load neither
Do you know what your blower drive ratio is? With a 144 blower, you are only displacing 82% of what it takes to charge the 4 cylinders per revolution that will be on the intake cycle. So to get any boost at all, you need to drive the blower at something more than about 125% of the engine rpm. To get meaningful boost (more than about 6#) you need to drive a 144 at something like 2:1 on a 350.
Also, do you know what your static compression ratio is?
is a thorough discussion of technical info on Weiand supercharges.