1957 Plymouth Directory

The Forward Look

Forward Look was a design theme employed by Virgil Exner in styling the 1955 through 1961 Chrysler Corporation vehicles.

Chrysler vehicles were being fashioned by engineers instead of designers, and so were considered outmoded, unstylish designs. Exner fought to change this structuring, and got control over the design process, including the clay prototypes and the die models used to create production tooling.

Plymouth Belvedere convertibles were only produced from 1957 to 1959

Video of the Plymouth Arrival

What's the Power-Pak Package?

Original Power-Pak parts are indicated by an "A" at the end of the part number.

1. Special Distributor - Auto-Lite p/n IBP4003A
2. Special Four-barrel Carter WCFB Carburetor 385 CFM - Tag# 2530SA
3. Special intake manifold - Four-barrel Casting # 1619826
4. Larger air cleaner with a paper filter for the first time, previously were oil bath
5. Dual Exhaust for less back pressure
6. 235 HP (More horsepower)

Maintenance: 1957 Plymouth Belvedere Convertible

June 22, 2010 the Plymouth arrived from Salem Indiana

Engine compartment when it arrived June 2010

JUNE 2010

  • 6/26/10 De-greased and pressure washed the engine compartment and underside of vehicle
  • 6/27/10 Changed oil & filter, painted oil filter can orange, greased chassis. (last oil change 1994 according to the door sticker)
  • 6/29/10 Replaced air filter and fuel filter

Plymouth Maintenance Recommended

Mileage Frequency

Chassis Lubrication and Visual Safety Inspection


Body Lubrication (hinges, locks, latches, door striker plates & rotors)


Inspect Oil Filler Cap, Outlet Pipe and Air Cleaner Filter Cartridge


Check Brake Fluid Level


Lubricate Generator and Distributor


Change Engine Oil (6qts with filter change)


Replace Oil Filter


Inspect Cooling System and Hoses (radiator)


Clean Carburetor Air Cleaner Filter Cartridge


Check Brake Adjustment


Engine Tune-up


Repack Front Wheel Bearings


Lubricate Speedometer and Cable


Check Fan Belt Adjustment


Check Wheel Alignment


Check Headlight Aiming


Replace Carburetor Air Cleaner Filter Cartridge


Change Automatic Transmission Lubricant (Type A)


Repack Universal Joints


Change Rear Axle lubricant (90wt. oil 3¾ pints)


JULY 2010

  • 7/2/10 Cleaned and packed front wheel bearings, installed new grease seals
  • 7/4/10 Bead blasted and painted 5 rims (wheels) gloss black
  • 7/5/10 Bead blasted and painted valve covers gloss black
  • 7/5/10 Mounted 5 new American Classic tires with metal stems and balanced
    (205/75R14 [radial] 2 ½ whitewall )
  • 7/6/10 Installed valve covers with new gaskets
  • 7/7/10 Installed overhauled driveline (Replaced rear universal joint and front ball & trunnion joint, and balanced driveshaft)
  • 7/7/10 Installed new front shocks
  • 7/13/10 Installed new 180 degree radiator thermostat
  • 7/14/10 New upper ball joints, new upper torsion arm bushings, and manual steering box rebuilt.
  • 7/19/10 Complete brake job; replaced master cylinder, all wheel cylinders, brake hoses and brake shoes. Painted backing plates and metal plate under master cylinder black
  • 7/20/10 Aligned front end after suspension work completed
  • 7/27/10 Rear pinion seal replaced
  • 7/28/10 Replaced oil in rearend and fixed some engine oil leaks
  • 7/28/10 Replaced ignition key core, fixed blinkers, installed new electric temp sending unit - it works...
  • 7/29/10 Touched up yellow paint
  • 7/30/10 Transmission serviced; filter and fluids changed - (plenty of clutch material left - worked on in 1983)
  • 7/30/10 Changed oil SAE 10-30 again while fixing leak


  • 8/1/10 New; fuel pump, fan belt, spark plugs, spark plug wires, distributor cap and rotor
  • 8/2/10 Leave for Hot August Nights in Reno.....
  • 8/8/10 Returned from Hot August Nights - with no problems! Yahoo!!!
  • 8/16/10 Carburetor off for complete concourse correct show quality overhaul.
  • 8/17/10 Radiator routed out and heater core tested and cleaned.
  • 8/20/10 Working on cleaning up the engine compartment
  • 8/22/10 Cleaned, primed and painted the firewall yellow
  • 8/23/10 Cleaned, sanded engine compartment and painted satin black.


  • 9/4/10 Intake manifold re-installed
  • 9/4/10 Front gravel pans painted metallic silver
  • 9/4/10 Painted several engine parts Ultra Black (air cleaner, fan, pulleys, etc.)
  • 9/5/10 Installed new water pump, thermostat housing, stock temp sensor and painted frame with Por-15
  • 9/5/10 Installed front gravel pans, buffed, and 5 vertical stainless strips
  • 9/14/10 Heater water control valve rebuilt and installed
  • 9/19/10 Cleaned rust from inside front bumper and painted silver, re-installed some small parts in engine compartment
  • 9/19/10 Removed exhaust manifolds to replace with ceramic coated manifolds. (Major issue - broke off several old studs)

Ceramic coated exhaust manifolds
Cap's Brite Hot Coatings
Ceramic coated in cast iron color $163

  • 9/21/10 Chromed rear trunk emblem - looks good
  • 9/25/10 I had to take the heads off to remove the old exhaust manifold studs and install new ones. Intake manifold had to come off again.
    Good thing! In the process I found 2 bent pushrods. One accounted for a click I have been hearing. I presume after the engine had been sitting for a long time and they started it up in Salem Indiana a couple of intake valves were stuck due to old varnish which bent the pushrods. Anyway new pushrods are on their way and new studs are installed.
  • 9/27/10 Replaced the fan, cleaned and painted the generator. Brushes are 90%. Old fan was really chewed up..


  • 10/8/10 Installed heads and 16 new Melling push rods. Adjusted the valves cold.
  • 10/9/10 Installed radiator, heater core, blower fan, generator, ceramic coated exhaust manifolds and horns.
  • 10/10/10 Painted inside of hood
  • 10/11/10 Had a machine shop drill and tap a hole ($35) in the intake manifold under the thermostat housing for the MOON gauges temperature sending unit. The wall is over 1/4" thick and the fitting is tapered pipe threads for a tight fit.
  • 10/15/10 Installed intake manifold and rebuilt carburetor.
  • 10/30/10 painted the inside of the hood satin black. Worked on miscellaneous issues and wiring.


Mr. Elgin's son said the engine was overhauled in 1982 and sent me the below reciept, so it has 10,000 miles on it.
I removed the intake manifold and it is as clean as can be inside.

In a 1957 Hot Rod Magazine test a 57 Plymouth did 0 to 60mph in 9.6 seconds with the 301 Power-Pak engine.

I just installed the distributor with the new PerTronix electronic module.

The Carter WCFB four-barrel 385 CFM carburetor has been fully rebuilt and plated by
RECARBCO (www.recarbco.com) to original specifications.

Not having a location where I could install the temperature sending unit for a set of MOON gauges
I had a machine shop for $35 drill and tap a hole to install a fitting in the thermostat housing.
There is over a quarter inch of material in the casting to tap into.


  • 11/3/10 Received and installed my distributor from PerTronix. They put in a new plate and mounted the electronic module. I installed a flame thrower coil to match the PerTronix system and give 20,000 more volts to the spark plugs.
  • 11/4/10 Fired up the Poly 301 - SWEET! Starts quickly, I had to fix some fuel leaks.
  • 11/6/10 Installed new rear shocks
  • 11/8/10 New exhaust system installed with chrome turndown tips.
  • 11/9/10 Valves adjusted, heads re-torqued, engine timed, idle set, choke worked on.
  • 11/11/10 New transmission shift cable and back up switch installed.
  • 11/12/10 New motor mounts and transmission mount installed


  • 12/20/10 Rebuilt Generator with new Armature (solved issue with high voltage)
  • 12/21/10 Install new regulator (voltage remains constant at 14 volts)

How to polarize a generator

To polarize a generator connect all wires to the regulator, connect the battery (negative ground) with the engine off.
Momentarily connect a jumper wire between ARMATURE terminal and the BATTERY (+) - a small spark should happen.


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