Impala SS Registry - 1961

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You would need some kind of original paperwork showing the RPO 240 option and only the sport coupe or convertible received the option. Only 142 of the 360hp 409 cid engines were sold in 1961, the remainder were one of the following: 305hp 348 cid engine 340hp 348 cid engine, or 350hp 348 cid engine. The Super Sport option mandated either the 348 or 409 engine along with heavier springs, heavy duty shocks, power steering, power brakes with sintered metallic brake linings, and 8.00 x 14 whitewall tires on steel black painter 14 x 5 wheels. All had what is commonly referred to as a Sun "3-piece" tachometer (tachometer, chrome cup, and sending unit) on the steering column with remote sending unit mounted on the driver side fender in the engine compartment.

Impala SS Registry
Impala SS Registry

The 1961 SS option also included SS emblems on the trunk and quarter panel, 3-bar spinner wheel covers, padded dash and a passenger side grab bar. If you suspect a fake, check the mounting holes for the grab bar. The factory mounting holes are oval, not round. Also the wheel covers did not have a mounting hole for the standard plastic emblem.

Mandatory Options
RPO Description
200 Shock Absorber, front and rear
253 Heavy Duty front springs
313
or
685
Powerglide transmission

Four Speed Transmission
324 Hydraulic steering
331 Tachometer (redline at 5000-5500 for 305hp V8 or 6000-6500 for 340hp, 350hp, 360hp V8)
412 Vacuum power brakes
427 Instrument panel pad
572
or
573B
or
580
or
590
348 cid V8 305hp

348 cid V8 350hp

409 cid V8 360hp

348 cid V8 340hp
593 Heavy Duty rear coil springs
686 Metallic Brakes
691 8.00x14x4 ply thin line rayon whitewall tires