Quite honestly, do you think that 50 lbs will have any significant impact in performance?

The flip side of this is that I'm convinced after looking at dyno sheets and having experience with making large displacement motors with low stock hp "work" in IT that the Vette's 350 is going to see big gains. The intake is an issue but that is not where IT flow improvements are seen. You need to scavenge and you put a great header design on that car and you are going to move the torque peak up a lot if the cam has some overlap.

I suspect you guys know this which is why the car is being built, and that's fine. You are entitled to the benefit of your hard work, and taking a chance.

But I think it very likely the car will make way more than 25% (but voted for it anyway because we don't have any real data to the contrary) and think keeping the DW adder in place for now is no real injustice.