Turbo 383 in a A-body Barracuda

On the wastegate you need to feed it air. Do you have a Boost Controller yet? I would be careful if you dont. Set your compressor at a low level to start the test. When taking out the big spring I could control the boost from 4psi to 40+++ using my Hallman Boost controler!

On the BOV you can use a vacuum pump to check it out. I pulled out springs in both the BOV and the gates. I rebuilt the Wastegates also. Check out my thread for the explanation.

I have the Hallman in my watch list. You put the small spring in the wastegate right? I'll look in your thread again.

I have been researching the vacuum routes. There are several.
PM me on those 5" 90's please