I have to respectfully disagree. That’s exactly the size gt45 I was talking about when I said it would be lazy on a mild 318. It’s a 1.05 AR hot side also. @Moparturbo, that will work and it will make boost, eventually, but something in the lower 60 mm range would be much more enjoyable to drive on a mild 318.
When you say lazy on a mild 318, what RPM would you say it will start making boost? It has the XE268 Comp Cam, 391 gear. Don't have a converter picked out yet for the 904.
