1961 Chevy Impala SS 409

 


1961 Chevy Impala SS 409

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69 Plymouth Road Runner

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69 Plymouth Road Runner The standard engine was an exclusive Roadrunner 383 cu in 6.3 L. B-series V8 engine with a 4-barrel Carter Carburetor rated at 335 bhp 340 PS; 250 kW at 5200 rpm and 425 lb⋅ft 576 N⋅m at 3400 rpm of torque. Its extra 5 hp 4 kW rating was the result of using the radical cam from the 440 Super Commando and 25 raise in compression to 10.5:1 (vs. 10.25:1 with the 330 hp (246 kW) 383). When air conditioning was ordered, the cars received the 330 hp 246 kW version, as the radical cam specs of the 335 bhp  250 kW version did not create enough vacuum to accommodate air conditioning. A $714 option was the 426 cu in 7.0 L Hemi with 2X4 Carter AFB carburetors rated at  425 bhp 431 PS; 317 kW at 5000 rpm and 490 lb⋅ft 664 N⋅m at 4000 rpm of torque.
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