Yes…a slight miscue when the author mentioned “Ram Air Induction” - as you state. NO worries! Dodge Ramcharger and Plymouth Super Stock cars could run the 1962 [Max Wedge 413 ), sold for drag racing, it boasted an official 420 bhp at 5,000 rpm. Street legal but not street practical. Cars with the same engine set four class records in 1962 NHRA racing, and made mid-twelve-second quarter-mile runs commonplace. On NASCAR tracks the long-ram setup was less than ideal, since it traded off power at one engine speed band for power in another, and was difficult to tune, due to the huge manifold.
However… ***NEW! 413 dyno tests conducted at Chrysler in 1959!!! This work resulted in the 1962 introduction of the Max Wedge 413, which came equipped with not only a cross-ram setup (this time a short one with the carburetors mounted conventionally between the valve covers), but also a pair of huge, up-swept cast iron exhaust manifolds. These are probably the most exotic-looking factory race parts ever made in the United States. Pistons were available in two compression ratios: 11:1 and 13.5:1. Mechanical cams and lifters were used . The heads were a new design with huge (2.08" intake) valves ground to a tulip shape. There were many other special parts used as well, including beefed-up valve gear and oiling components. Also, the factory made sure to upgrade the transmissions bolted behind these engines.
The “Long-Ram Induction” intake runners, were very short lived for S/S drag racing, and quickly replaced w/the above. So too, were the original ‘62 413 displacement, w/a .030 overbore, for 426 c.i. NO mention Of “Ram Air” here…
P.S. The correct lyrics (background voices), are actually singing: “…Tach-it ‘up…tachin’-up…” NOT tack it up! For the repeat refrain, in the beginning verse, they sing a combo of tach-it-up…and tachin’-up…
***NOTE: Below, is a red 1962 Dodge Dart Ramcharger 413. The name on the door reads: “DART” Typical of the car the Beach Boys were singing about in “SHUT DOWN!” “Super-Stock DART winding out-in-low…”