Yep, torque peak was around 4500 rpm and it nosed over after that. I think the torque curve would have been stronger with a Performer RPM and a single throttle body. The CH28 isn't big enough to make good power on a 500 inch engine but it has a nice hot rod look. The owner wanted duals for the looks and he wanted a nice smooth cruising engine so he is happy.
I've seen the same results using stock type six pack intakes and carbs, peak torque between 4500 and 4600 RPM and peak HP between 5500 and 5600 RPM, I ended up learning at the track to shift those motors at the RPM that got the best ET which was above 7000 RPM with decent size solid roller cams
Test, test and test some more until your done testing and learning
