[Hozer 88GTConv]

Yeah, I've gotten about 10 inches at idle. But it fluctuates of course. I wondering if the leak is only pronounced at one cylinder, it might not be noticeable.

Honestly, Dark's statement about his head ports "swallowing" the Gt-40's never occurred to me. When I take the manifold off this time. I am really going to examine the gasket position on the bottom of the intake and see if there is an obvious issue.

My suspicion is that the TFS heads do the same to my gt-40 intake.

I will test the vacuum again in a minute and post it. I am going to call TFS and see what they say, too.