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Induction came by means of a cross-ram intake manifold tuned for peak power above 4000 rpm and two Carter AFB-3447SA 4-barrel carburetors. The Max Wedge also included high-flow cast-iron exhaust manifolds that, on the later versions, resembled steel tube headers. The Max Wedge was factory rated at 415 or 425 bhp (309 or 317 kW) (depending on ...
A split-level (vertically split, rather than horizontally divided) intake was also experimented with. [5] Chrysler hoped to have the ball-stud in production sometime between 1971 and 1973. [4] In testing, it proved able to outperform the single four-barrel carburetted A134 440, and lagged behind the eight-barrel A102 426 Street Hemi. [7]
The high performance 440 was standard in the GTX as was the TorqueFlite automatic transmission, while it was an extra cost option in the Plymouth Road Runner. The GTX used the Sport Satellite trim and was offered in two body styles, a two-door convertible and a two-door hardtop (no B-pillar).
Chrysler developed its first experimental hemi engine for the Republic P-47 Thunderbolt fighter aircraft. The XIV-2220 was an inverted V16 rated at 2,500 hp (1,860 kW). The P-47 was already in production with a Pratt & Whitney radial engine when the XIV-2220 flew successfully in trials in 1945 as a possible upgrade, but the war was winding down and it did not go into production.
A “six-pack” (three two-barrel carburetors) version of the 440 engine was added to the list mid-year. This engine was between the standard engine and the Hemi as a $463 option. The 1969 model year included the base 383 hp (high performance) with the 440 six-pack and 426 Hemi optional. The 440 Magnum (4-bbl) was not available in the Coronet R/T.
The restriction causes a strong manifold vacuum which the cylinders have to work against, sapping much of the potential energy out of the system over time and producing the majority of the engine-braking effect. [1] This vacuum manifold effect can often be amplified by a down-shift, which induces a faster spinning drivetrain to engage with the ...