Quote Originally Posted by Pure Stock View Post
10-15 whp over the stock intake with a trade off in some midrange. Extending the operating range roughly 1,000 rpm may make it worth it as far as not needing to shift. I have a graph overlayed with a stock intake manifold vs. A complete cj setup. Not a dead nuts comparison though. It is a GT stock manifold vs a Boss with cj. The GT is ahead of the cj until about 5,600 rpm. After that it's cj.

From the one vid you posted it looked as though excluding the launch the engine gets down to around 4,000 rpm.
Yes, and I short shifted a couple times, but the highest I ever shift the car is 6800. At the last hillclimb I was going through the finish at 7600 in 4th (3.31s) on the limiter for a while, wasn't sure if it would pull 5th with a last second shift. I think the car would go faster with a Boss or CJ as much time as I could spend from 5000-7600 or so. CJ is some serious coin over the Boss, most dyno tests I see don't show a significant difference between the two.