I did have that port to attach the boost vacuum line, but t was broken. I replaced it and I am currently getting between 2 and 3psi on the boost. I will try tightening the nut as suggested and if need be get a bigger spring. Thank you
I recently bought this lady, 1996 Silverado with the 6.5 because I needed more pulling power than my 88 scotsdale with the 350 has. But come to find out my Scotsdale can out pull this lady as it sits. I get a lot of smoke when I am taking off or pulling a load with Blue. Max speed with a small...