No losses that weve seen... Dry. the B/RB and the LA manifolds are very nice designs. The LA from Mopar Perf needs a few+ hours of diegrinder work for basic performance (carbs) due to lots of core shift and flash. The Edelbrocks not so much. You can open up the plenum about 25% if your running it dry, but Id leave it alone with carbs to maximize velocity to combat fuel distribution issues. Well tuned carbs work great but its a lot easier to tune the computer, or better yet, let it tune itself! Weve seen mid 600hp RB and LA stroked motors using the dry 6bbl intake. Wed like to see how much more the intake can support modified for EFI...
BKB