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Since 1972 Chrysler had not offered a 6 cylinder with sports aspiration but that would change with the release of the Dodge Polara RT, it was a hard top coupe equipped with the new high-performance Slant Six RG 225 or commonly known as Slant Six RT, thanks to the addition of a new Holley 2300 two-barrel carburetor, "3a1" exhaust manifolds, a ...
A narrower range of engines was offered: the base power plant was the 225 cu in (3.7 L) slant-6, now with top-fed hydraulic tappets, and the 318 cu in (5.2 L) and 360 cu in (5.9 L) LA-series V8s. The slant-6 was replaced by the 3.9 L (237 cu in) V6 for 1988; in 1992, it and the V8s became Magnum engines.
The coupe variant's models were also based on the same body, with the basic model known as the Dodge Polara coupe, the sports version as the Dodge Polara R/T, all these models featured the 225 cu in (3.7 L) slant-six engine, and the deluxe high-performance version was the Dodge GTX. This last model came equipped with a 318 cu in (5.2 L) V8 ...
The long-running 225 Slant-Six returned as the standard engine (later advertised in its 3.7 L metric displacement); in 1988, it was replaced by a 3.9 L LA V6 adopted from the Dodge Dakota. The 318 (later 5.2 L) returned as the standard V8 option, adopting fuel injection for 1988 (the 5.9 L V8 doing so for 1989).
The 225 slant-six was the only available engine, equipped with an aluminum intake manifold for the first time since 1960 and a specially calibrated carburetor and distributor. Bumper reinforcement brackets were aluminum instead of steel, while the hood and trunk lid bracing and inner panels were also aluminum.
Horsepower rating for the 170 cu in (2.8 L) Slant-6 engine was raised from 101 bhp (75 kW) to 115 bhp (86 kW) by installation of the slightly bigger camshaft introduced on the 225 in 1965, together with Carter BBS and Holley 1920 carburetors using the larger 1 + 11 ⁄ 16 in (43 mm) throttle bore previously reserved for the 225, rather than the ...
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