Ported GT350 Intake Manifold?

[King Tiko]

Has anyone ever ported the GT350 intake manifold? If so what were the gains losses you experienced?

 

[09jsw]

I had mine ported and couldn't measure the gains or losses due to being tuners months apart from the initial test. Before the port work and 47inj I made 456/394
After I made 440/390 on 93 and 459/393 on flex fuel with E at that time.