1957 Cadillac Fact Sheet

Series 60 Special:  The 60S Fleetwood was still the long rear-deck, long wheelbase model, but it was now a four-door hardtop. It featured a wide, ribbed bright metal fairing extending from the lower rear half of the door to the back bumper. A “Fleetwood” nameplate was attached to the rear deck lid. Only on the 60S Series did the rear deck also house the backup lamps.

Series 75 Fleetwood. These ultra-long-wheelbase Cadillacs came in Fleetwood limousine or Fleetwood nine-passenger sedan configurations, both with auxiliary seats. Side trim was the same as on Series 62 models except that the Cadillac crest was not placed on the rear fins.

Eldorado:  The Eldorado line was further distinguished by placement of the “Eldorado” name above a V-shaped rear deck ornament and on the front fenders. The rear fender and deck contour was sleekly rounded, and the wheel housing was trimmed with broad, sculptured stainless steel beauty panels. The pointed, “shark” style fins pointing towards the back of the cars were unique to all Eldorados. A three-section, built-in front bumper was another exclusive trait of the Eldorados – that came with a long list of standard accessories.

Eldorado Brougham:  The 1957 Eldorado Brougham was a completely pillarless 4-door hardtop with even ventipanes absent. The car was further distinguished by “suicide” type rear doors and a brushed stainless steel roof, the first appearance of quad headlights, and totally unique trim. The exterior ornamentation included wide, ribbed lower rear quarter beauty panels extending along the full rocker sills and a rectangular sculptured side body “cove” highlighted with five horizontal wind splits on the rear doors. The rear quarter styling treatment followed the Series 62 Eldorado theme. Buyers of Broughams had a choice of 44 full leather interior trim combinations and could select such items as Mouton, Karakul or lambskin carpeting.

Standard equipment included all possible accessories including a dual four-barrel V-8, air-suspension, low-profile tires with thin whitewalls, automatic trunk lid opener, “memory” seat, cruise control, high-pressure cooling system, polarized sun visors, Signal-Seeking twin speaker radio, electric antenna, automatic-release parking brake, electric door locks, and dual heating system. Part of the option list were silver magnetized glove box drink tumblers, cigarette and tissue dispensers, lipstick and cologne, ladies’ compact with powder puff, mirror and matching leather notebook, comb and mirror, and Arpege atomizer with Lanvin perfume.

Optional equipment included an automatic starter with re-start function, Autronic-Eye, drum-type electric clock, power windows, forged aluminum wheels, and air conditioning.

Eldorado Engine.  V-8. Overhead valves. Cast Iron Block. Five main bearings.
Displacement: 365 CID.
Bore and stroke: 4.00″ x 3.625″.
Compression ratio: 10.0:1.
Horsepower: 325 @ 4800 RPM.
Torque: 400 @ 3300 RPM. 
Valve lifters: Hydraulic.
Camshaft timing: Intake 324° (274°), Exhaust 324° (274°), Overlap 102° (52°), Lift (Intake) 0.451″ (Exhaust) 0.451″. 
Carburetors: Two Carter WCFB four-barrels, (front) model 25825, (rear) model 25835 (rear).  Also two Rochester 4GC four-barrels, (front) model  7010302, (rear) model 7010300.

NOTE: This engine – Q Code, was only available in the Eldorado line this year, though the intake could be dealer installed.

NOTE: Regarding advertised camshaft duration, Cadillac counted the hydraulic lifter “ramp” which allowed the lifter to fill with fluid, but did not appreciably lift the valve. The more accurate duration was at about 50 degrees of camshaft rotation – hence the true duration is shown in parenthesis.