Hot Rod started to put up their SBC 350" 7 manifold comparison article online, but for some reason stopped at one page, instead of putting up a page for each intake/carb.(s) setup test like in the magazine... fortunately, I also have the magazine...
.. The Weiand Tunnel Ram that Summit sells in a kit with carb.s & linkage at a reasonable price is a STREET tunnel ram and perfectly streetable, including low RPM torque and good MPG (with sensible cam and gearing). Hot Rod tested it with the bottom level twin Holley 450's and said it ran perfectly right out of the box. Including, to their surprise, no unusual bogging despite mechanical secondaries, and NO DP, NO VS..!!! Summit had it a well tuned kit. It also outperformed EVERY other street and semi-race manifold at every RPM with MORE TORQUE and more HP. The only one to make slightly more top end power was the more race-oriented Eddy Tunnel Ram with much bigger carb.s (750 Dominators?), and they felt if the Weiand had been ordered with the 600 carb. option, it prolly would have beat the Eddy TR as well... but with slightly poorer low and mid-RPM performance, unless the VS's on the 600's would have helped there......
Yea that was Hot Rod January 2002.. If you look futher in the article it was the Edelbrock Street tunnel ram (pn# 7110) with a pair of 650dp Race Demon TR carbs that made 503hp @ 6100rpm, and 452tq @ 5600. The Demon TR series were meant for tunnel rams hence the "TR". There is also a quote from Barry Grant in article stating "tall tunnel ram with small runners can be a streetable high torque setup"