Chevrolet Impala SS

At the dawn of the 1960's, Kennedy, the newcompete against the Ford 390 Interceptor from
President-elect, spoke of a "new frontier." He was1960. The crankshaft was forged, as were the
talking of new age of post-war prosperity andaluminum pistons. A performance solid-lifter cam,
specifically, America's quest for reaching the Moon.raised compression to 11.25:1 and used a Carter AFB
For the big three, the new frontier was one ofcarburetor on an aluminum manifold. It made 360
technical and marketing innovations. Combining thehorsepower @ 5800 rpm and torque was a
two became an essential element in the rapidlylegendary 409 lbs.-ft @ 3600 rpm. A real brute of a
maturing market.motor.
Marketing scored with the invention ofThe cylinder heads were different from the 348's
youth-oriented cars such as the Mustang andand used stiffer springs and heavy-duty pushrods.
Barracuda. The engineers scored with thin wall castingNineteen sixty-one SS Impalas were scarce with only
and improved reciprocating assemblies from the453 made. As for an SS 409, you'd have better luck
rotating valve lifter to the use of Teflon buttons inmeeting Elvis because only 142 made it. The
pistons to prevent scuffing. When good engineeringtransmissions were either Powerglide, Warner T-10 or
and marketing combine, the effect is shattering. Thethe three-speed standard
Impala SS of the 1960's was an excellent example.Nineteen sixty-two brought the SS Impala package
The Impala had become the top model in '59,onboard and the 409 was more obtainable. Those
replacing Bel-Air's position. In '58, Impala was a top ofeager beavers that placed orders for early 62's must
the line Bel-Air. Over the years, it had grown inhave been annoyed when Chevy announced a
wheelbase from 115 inches to 119 inches. The far outdual-quad 409. At least the four-barrel engine had
styling was immediately toned down for 1960. A newbeen improved with power up to 380 horses. The
package had been developed in 1961 to help securedual-quad engine put out 409 horses @ 6000 rpm. A
Chevy's sales' dominance in the full-size arena. It washair more than 15,000 units sold that year. As the
called the Super Sport, or SS, for short.drag-strip wars heated up, Chevy brought out special
It was a complete deal, comprising of exterioraluminum front end Impalas. But there was no official
badges against the Impala crest on the quarterracing going on, just some "off-road" and "fleet
panels, bucket seats, floor shift trim plate, a steeringservice" parts being sold over the counter.
mounted tachometer, a passenger dash grab handle,Nineteen sixty-three brought a facelift to the grille
special trim and a modified LPO 111 suspensionand side panels with two chrome blocks on the
package, power steering, power brakes, and wheelfenders and a lower spear resting above the rear
covers. The origins of this package came from awheel well. The badges moved from above the
show car.bumper to behind the front wheel. The beautiful
The 1961 SS Impalas weren't standardized inspinner hubcaps changed to a variation of the 1961
appearance. You could order the package on aImpala model with the SS logo prominently displayed.
four-door car, a six-cylinder powered coupe or youNew that year was the detuned 409 mill @ 340
could go "top drawer" and get a slant backhorsepower. A 400 horse 409 existed midway
sports-roof with the hot 348 engine. It was basicallythrough the range with solid lifters and the dual-quad
a sales code without formal restrictions, although that425-horsepower 409 had a lower 11:1 compression
would change soon enough.ratio.
Chevy had great options available in short runs, butStill, Chevy hadn't gone soft on us. The Z-11 was the
no easy 1-step option that gave you the basics tolatest doomsday machine and was a 430-horse
go racing. The 1961 SS Impala changed all that.version with the displacement at 427 CID. Strictly for
Previously, there were the Fuel Injected Ramjet anddrag racing, these cars were sold to connected guys
Ramjet Special 283's, but they vanished by the endsuch as Dave Strickler and Hayden Profitt.
of '59. Likewise, you could get LPO 1108, which wasNineteen sixty-four was the final year of this body
a heavy-duty suspension for Police Cars. This gavestyle Impala. For the last go-round, Chevy gave us
you metallic brakes, H.D. ball joints, bigger shocks,better rear end choices with our four-gear cars and a
stiffer springs and better wheel bearings front andsharp-edged car that attempted to emulate the new
back. Available on every model, but certainly notthin gauged sheet metal cars with uni-bodies like the
advertised!Chryslers and smaller GM offerings that year.
The sales of four speed cars had sky rocketedEngine-wise, there wasn't anything new to report.
sharply in 1961, guaranteeing the future of the SS.Let's clear up the misconceptions about 409 engines.
New for '62 was a full-length console. The fancyFirst, it is related to the 348 W motor of the late
wheel covers were a necessity, the slots helped cool'50s in that the block casting started out the same.
down the brakes. What did change were the engines.Pretty soon afterwards, the 409 developed a life of
The 409 was about to have its fifteen minutes ofits own. From the start, it was intended to replace
infamy. The 409 has been a controversial engine.the 348 and provide more power for bigger bodied
Denigrators call it a truck engine. Fans call it the earlycars. 348's were used frequently in trucks and their
sixty's track god. It was a little of both as we'll see.outward similarity probably made people conclude the
Starting with the 348 block, Chevrolet changed much409 was the same. In fact, the early 1961 four-barrel
of the hardware to create a racing engine tomills seemed pretty tame.