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Although the race cars ran a destroked 303 cu in (5.0 L) version of the modified 340, street versions took the 340 and added a trio of two-barrel carburetors atop an aluminum intake manifold, creating the 340 Six Pack. Dodge rated the engine at 290 hp (216 kW), only 15 hp (11 kW) more than the original 340 engine (which also had the same rating ...
The hood had an integrated forward-facing scoop which sealed to the air cleaner assembly and bore a decal on each side with the words "SIX PACK" in red letters, "Six Pack" being the name used for the 6-bbl induction setup when installed on a Dodge (Plymouth went with "440 6bbl" on the A12 Road Runners).
A Boss 302 engine with the optional factory shaker scoop. A shaker scoop (sometimes called a shaker hood scoop or a shaker hood) is an automobile term for an air intake for combustion air that is mounted directly on top of the engine's air cleaner and protrudes through a hole in the hood. Since it is fastened directly to the engine, it moves ...
The "Ramcharger" hood featured forward-facing scoops. A "six-pack" (three two-barrel Holley carburetors) version of Dodge's 440 cu in (7.2 L) engine was added to the offering list mid-year rated at 390 bhp (395 PS; 291 kW) @ 4700 rpm and 490 lb⋅ft (664 N⋅m) @ 3600 rpm of torque.
The Hemi-6 valves are angled apart (splayed) 18 degrees (included angle) along the crankshaft axis, and the intake valves are as large as 1.96 in (50 mm). The 6 intake and 6 exhaust valves open slightly towards each other and away from the cylinder wall, which results in less "shrouding" of the valves and greater airflow potential.
A shallow scoop that is not a NACA duct may not admit a useful amount of air even if it is open. Under the hood, an effective scoop must funnel air into the engine's intake in as short and direct a path as possible, preferably through a tube or channel that is insulated against underhood heat. A scoop may be part of the hood or may be part of ...
Replacing the standard hood is one with a non-functional hood scoop. The most noticeable feature is the large spoiler which is attached at the rear of the cargo box. The 11-inch (280 mm) spoiler lined up with the flat black stripe that ran along the back of the bed side with the word 'Daytona' written in the middle.
The 400 cu in (6.6 L) B engine was introduced in 1972 to replace the venerable 383, and were power-rated via the net (installed) method. Chrysler increased the bore size of the 383 to create the 400. Its bore of 4.342-inch (110.3 mm) was the largest used in any production Chrysler V8 at the date of its introduction.