Factory Plating
The buildsheet will have boxes that have codes for everything your car came with.
The spring codes, shock codes, alternator code, axle code, trans code, engine
code, etc.  Finding a build sheet is almost impossible unless you have an
unmolested original car. And even then it might not be there.
                  
                The top half of a Fremont CA built 65 442 buildsheet
The serial number for a 65 442 frame is located behind the tail pipe hanger holes
on the drivers side.
The upper control arm mounting plate has four attaching holes, a Cutlass will not
have four holes in this plate.
The rear crossmember has this tongue above the rear end.  This is only on 442 frames.
On the drivers side, top of frame, is a stamping that matches the VIN number of the
car.  The picture below is from a Fremont frame.
This is the top of the passenger side axle tube.  The code is read backwards as
SJ, a 3.55 ratio with posi-traction.  Lansing axle housings have the letters right
next to each other and in a different font.
The lower control arms are boxed, but only where the sway bar attaches to them.
This was found on the bellhousing of a Lansing built, automatic 65 442.
All 65 Cutlasses and 442s built and sold for use in CA used a closed PCV system. The
system used a PCV valve in the driver side valve cover, an oil cap on the filler tube,
and a unique breather on the passenger side valve cover. All other cars made at
Fremont but sold outstate used the 49 state style breather and AC OIL open element
breather on the oil tube. The hole in the other valve cover was sealed with a rubber
grommet.  Photo is of the 49 state breather, the California breather, and the rubber
plug on a Washington state based 442.
One of the hardest things to get right on a 65 442 is the engine color.  Most
people, myself included, paint their 400s the wrong shade of bronze.  Its not
our fault, no one makes the correct engine paint color. The picture below is of
a NOS 65 400 A head. You can see that the color is a deep metallic bronze.
The whole engine was painted this exact color, a color that you cannot find
today. I do know a secret PPG code for it, but it isnt engine paint.
I am not sure what these codes mean.  The first is from a V-6 F85 and the other is
from a V-8 Cutlass.  These were located next to the latch hole on the underside of the
hood
Firewall paint stick marks.
The voltage regulator covers this up when bolted on.  No idea what this one meant.
Starter to relay block cable.  Note the green tape around the end that bolts on the
relay block.
Factory fuel usage tag.  This was hung from either the turn signal stalk or the wiper
switch.  Assembly manual calls for it to be hung on the wiper switch but its easier to
hang it on the turn signal arm.  Original tag was found under the carpet of a 65 442.
These very small parts are very easy to overlook but are specific to 442 power brake
cars.  The red circled parts were used only on 442 cars with power brakes.  The first
part is a bracket that bolts to the drivers side rocker cover and holds the booster
vacuum hose in place.  The second part is the 45 degree intake fitting for the hose to
clamp to.  The Cutlass parts are next to the 442 parts for comparison.
New Old Stock brake booster for 64-66 Cutlasses and 442s.  Note the master cylinder
is black not bare metal.  And the booster has a green paint daub at 1:00.
Key from a 65 442.  This key is different from the Briggs and Stratton keys you buy
today.  It has RP, Rochester Products Division on one side.  This key is stamped 8242
so I am going to assume its the original key.  All original keys have a code stamped on
them from the factory.
Many 65 442s left the factory with Red Line tires.  The brands of Red Lines used by
Olds were Firestone and U.S. Royal.  Originally the red line was in the middle of the
sidewall.  In the late 1960s the manufacturers moved the line towards the rim.  
Reason for this was if the driver scuffed the tires against a curb the redline would
take all of the resulting damage.  Below is a low milage U.S. Royal  showing the
original placement of the redline.  If you have a repro set of U.S.Royals you can see
where the line used to be in the mold.
Factory Paint Daubs
Factory Color Codes
Factory Part Labels
442 Frame Features
Factory Inspection Marks
These two are also stamps.  They were found on the side of the cowl, the area
hidden under the fender.
Another stamp, this one applied to the A/C unit.  Reads OK FINAL TEST OLDS.
Lansing Broadcast Cards
Below are examples of 65 442 broadcas cards. Having never seen the big Fremont
style sheets in a Lansing car this is the only paperwork thats been found, so far, that
has the option codes the car came with.  28528 is  the production number as on the
cowl tag, 955 Interior Code (Red), 2K Kick panels (A/C panels), 4V dash emblem,
3837 Body Style (V8 Cutlass Coupe), 4-342-29-8 unknown.  These paper cards were
attached to the spring frame of the rear seat bottom, center spring in the rear.
Misc. 65 442
1965 442 steel wheels were stamped with an R.  This code is found next
to the valve stem.
Oldsmobile added a heater core shut off valve to their 65 442.  It was a valve that
mounted to the rear of the passenger side valve cover and did nothing.  It was always
open.  This valve is seldom, if ever, seen today on a 442.  Here are the correct hose,
valve, and mounting parts.  The elbow hose from the valve to the engine isnt shown.
Here are two speedometers that are very rare.  The first was used in export cars, it
registers speed in kilometers.  The second must have been used in police cars, note
the certified police speedometer script on the bottom and the hash marks between
each speed increment.
According to the Cutlass Assembly manual each radiator had a code.   I found this
stamp at the 09 OCA Nationals.  This code, 142FF, was found on a 4 speed radiator.
This Lansing frame has two VIN stamps, both on the drivers side top of frame.  The
first is on the rise going over the rear end, and the second is by the tail pipe hanger.
Yellow scribble found on the passener side frame rail of a Lansing 442.
Date Codes
The rear end date code is stamped on the inspection cover.  The covers below have
C2 and E7.  C is for March and E is for May.  The number is the day the unit was built.
Alternator code stamp
Sticker was applied when the frame was loaded to the line.  Frames were upside down
when loaded, thus sticker will be upside down.
Speedometer sticker
Heater Box Sticker
Steering column sticker.  This line was the location to stop applying interior color
paint to the column.
USS Steel stamp on gas tank.  Not a GM mark, but a supplier mark on the steel
used to make tanks.  Rarely seen on headlight mounting buckets also.
Inside fender
Voltage regulator style stamp this time on the cowl side under the fender.
Rear End Ratio Code Sticker, with a PN that is not readable