GM RPO build codes

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== '''These CHEVY (GM) RPO build sheet numbers decode as follows:''' ==
+
==These CHEVY (GM) RPO build sheet numbers decode as follows:==
+
 
+
 
AG7 6 way Power Seat
 
AG7 6 way Power Seat
 
   
 
   
Line 24: Line 22:
 
AUO Remote entry
 
AUO Remote entry
  
AS1 Shoulder Harness, '67+
+
AS1 Shoulder Harness, '67-up
  
AS4 Deluxe Rear Seat Shoulder Harness, '68+
+
AS4 Deluxe Rear Seat Shoulder Harness, '68-up
 
   
 
   
AS5 Standar Rear Seat Shoulder Harness, '68+
+
AS5 Standar Rear Seat Shoulder Harness, '68-up
 
   
 
   
 
AT8 Reclining Passenger Seat
 
AT8 Reclining Passenger Seat
 
   
 
   
AU1 Electric Door Locks, '70+
+
AU1 Electric Door Locks, '70-up
 
   
 
   
 
AU3 Power Door Locks
 
AU3 Power Door Locks
Line 46: Line 44:
 
A33 Power Tailgate Window
 
A33 Power Tailgate Window
 
   
 
   
A39 Custom Deluxe front and rear Seat Belts, 66+
+
A39 Custom Deluxe front and rear Seat Belts, '66-up  
   
+
 
A37 Seat Belt Equipment, '64 only.
 
A37 Seat Belt Equipment, '64 only.
 
   
 
   
Line 56: Line 53:
 
A41 Power Bucket Seat, 4 way.
 
A41 Power Bucket Seat, 4 way.
 
   
 
   
A46 Power Drivers Bucket Seat, 66+
+
A46 Power Drivers Bucket Seat, '66-up
  
 
A47 Custom Deluxe Seat Belts.
 
A47 Custom Deluxe Seat Belts.
Line 80: Line 77:
 
A82 Head Rest, Bench Seat
 
A82 Head Rest, Bench Seat
 
   
 
   
A85 Deluxe Shoulder Harness, '66 1/2 +
+
A85 Deluxe Shoulder Harness, '66-1/2-up
+
 
A90 Electric Trunk Opener
 
A90 Electric Trunk Opener
 
   
 
   
 
A93 Vacuum Door Locks, '69
 
A93 Vacuum Door Locks, '69
  
BO1 Police Body Equipment, '64-65.
+
BO1 Police Body Equipment, '64-'65.
 
   
 
   
BO2 Taxi!! '64-65.
+
BO2 Taxi!! '64-'65.
 
   
 
   
 
BW2 Deluxe Body Side Molding  
 
BW2 Deluxe Body Side Molding  
Line 102: Line 98:
 
B2M No power steering.
 
B2M No power steering.
 
   
 
   
B22 Door trim pad emblem " SS "
+
B22 Door trim pad emblem "SS"
 
   
 
   
 
B37 Colored floor mats
 
B37 Colored floor mats
Line 110: Line 106:
 
B55 Deluxe Front Seat Cushion, '67+  
 
B55 Deluxe Front Seat Cushion, '67+  
  
B70 Padded Dash '64-65.  
+
B70 Padded Dash '64-'65.  
  
 
B75 lining lug compartment, '69
 
B75 lining lug compartment, '69
Line 138: Line 134:
 
CB7 Vinyl Roof cover.
 
CB7 Vinyl Roof cover.
 
   
 
   
CD2 Windshield Washer Level Control, '70+
+
CD2 Windshield Washer Level Control, '70-up
  
CD3 Electro-tip Wipers, '70+
+
CD3 Electro-tip Wipers, '70-up
  
 
CE1 Headlight Washers
 
CE1 Headlight Washers
Line 152: Line 148:
 
CO9 Padded Vinyl roof
 
CO9 Padded Vinyl roof
 
   
 
   
C14 Two Speed Wipers, '64.
+
C14 Two Speed Wipers, '64
 
   
 
   
 
C24 Special Windshield Wipers  
 
C24 Special Windshield Wipers  
Line 166: Line 162:
 
C56 = I/P side vent /70 Upper Level Vent / Astro Ventilation  
 
C56 = I/P side vent /70 Upper Level Vent / Astro Ventilation  
  
C60 Air Conditioning, 4 seasons.
+
C60 Air Conditioning, 4 Seasons.
 
   
 
   
 
C65 Air Conditioning, Deluxe version.
 
C65 Air Conditioning, Deluxe version.
Line 186: Line 182:
 
D80 Spoilers
 
D80 Spoilers
 
   
 
   
D88 Sport Stripe, '70+
+
D88 Sport Stripe, '70-up
  
 
D91 Conquista package
 
D91 Conquista package
 
   
 
   
D96 Wide Paint Stripes, * '67+ refer's to body side accent stripe  
+
D96 Wide Paint Stripes, '67-up, refers to body side accent stripe  
  
 
D99 Two Tone Paint Moldings  
 
D99 Two Tone Paint Moldings  
Line 198: Line 194:
 
F40 Sport suspension
 
F40 Sport suspension
 
   
 
   
F41 Sport Front and Rear Suspension, '69+  
+
F41 Sport Front and Rear Suspension, '69-up+  
  
 
GS1 2.73 Ratio Axle (from 1972 Build Sheet)
 
GS1 2.73 Ratio Axle (from 1972 Build Sheet)
 
   
 
   
GY2 *3.31 ratio axle ('71-'72 Chevelle / El Camino / GMC Sprint).
+
GY2 *3.31 ratio axle ('71-'72 Chevelle/El Camino/GMC Sprint).
 
   
 
   
 
G11 2.56 Rear Axle
 
G11 2.56 Rear Axle
Line 210: Line 206:
 
G67 Controller for Air Shocks.  
 
G67 Controller for Air Shocks.  
  
G75 3.70 rear  
+
G75 3.70 rear axle ratio
  
 
G76 3.36 rear axle ratio  
 
G76 3.36 rear axle ratio  
Line 216: Line 212:
 
G80 Positraction rear  
 
G80 Positraction rear  
  
G82 4.56 Rear axle
+
G82 4.56 Rear axle ratio
 
   
 
   
G84 4.10 Rear axle
+
G84 4.10 Rear axle ratio
 
   
 
   
G92 Performance rear 3.08
+
G92 3.08 Performance rear axle ratio
 
   
 
   
G94 3.31 rear
+
G94 3.31 rear axle ratio
 
   
 
   
G95 Economy rear 2.73  
+
G95 2.73 Economy rear axle ratio
  
G96 3.55 rear
+
G96 3.55 rear axle ratio
 
   
 
   
G97 2.73 Rear ratio
+
G97 2.73 Rear axle ratio
 
   
 
   
 
GW5 273 Ratio Axle  
 
GW5 273 Ratio Axle  
Line 235: Line 231:
 
   
 
   
 
HO5 3.73 rear axle ratio
 
HO5 3.73 rear axle ratio
 +
 +
J1E LS3 Only 465 -465 HP
 
   
 
   
 
J50 Power brakes  
 
J50 Power brakes  
Line 291: Line 289:
  
 
L65 350-250hp, '69+
 
L65 350-250hp, '69+
 +
 +
L67 327-340hp, '62+  solid lifter
 
   
 
   
 
L72 427-425hp Yenko, '69  
 
L72 427-425hp Yenko, '69  
Line 608: Line 608:
 
Z87 Custom Interior group  
 
Z87 Custom Interior group  
  
ZO1 Comfort and Convenience Group, '64-65.  
+
ZO1 Comfort and Convenience Group, '64-'65.  
  
 
ZO2 Pushbutton Radio and extra speaker, '64.  
 
ZO2 Pushbutton Radio and extra speaker, '64.  
  
ZO4 Heavy Duty Chassis, '64-65.
+
ZO4 Heavy Duty Chassis, '64-'65.
 
   
 
   
 
ZO8 Body Molding/Trim  
 
ZO8 Body Molding/Trim  
Line 648: Line 648:
 
ZP2 *Trim & color override. This was for cars that had an exterior/interior color or trim combination that was not normally available. This code is listed on the build sheet for a '71 GMC Sprint that was "Classic Copper" with a "Dark Saddle" interior - a color combination not normally available.
 
ZP2 *Trim & color override. This was for cars that had an exterior/interior color or trim combination that was not normally available. This code is listed on the build sheet for a '71 GMC Sprint that was "Classic Copper" with a "Dark Saddle" interior - a color combination not normally available.
 
   
 
   
ZR3 Refers to: = Off road package 454(LS7 & LT2) 69*  
+
ZR3 Off road package 454(LS7 & LT2) '69*  
  
Z02 refers to: **SPEC PAINT** (from 72 tag)
+
Z02 **SPEC PAINT** (from '72 tag)
 
   
 
   
 
ZP5 *Appearance guard group.
 
ZP5 *Appearance guard group.
 
   
 
   
ZW4 *Std Trans 3spd (70)
+
ZW4 *Std Trans 3spd ('70)
 
   
 
   
Z13 Comfort and Convenience Group, second style, '64-65.
+
Z13 Comfort and Convenience Group, second style, '64-'65.
 
   
 
   
Z14* Refers to: = A/C BODY CONV (info from 72 Chevelle)  
+
Z14* Refers to: = A/C BODY CONV (info from '72 Chevelle)  
  
 
Z15 SS equipment. (454 in '70)  
 
Z15 SS equipment. (454 in '70)  
  
Z16 Special Sport Coupe - 65 Chevelle  
+
Z16 Special Sport Coupe - '65 Chevelle  
  
 
Z19 Convenience Group, '66.
 
Z19 Convenience Group, '66.
Line 679: Line 679:
  
 
Z95 Regular Fuel Engine Equipment
 
Z95 Regular Fuel Engine Equipment
 +
<br><br>
 +
----
 +
<font size="5">{{Note1}}'''''More RPO codes are to be found after the following text'''''</font>
 +
----
 +
<br>
  
 +
==Build Sheet==
 +
Build sheets are a small strip of paper, about 2 inches wide by 8 inches long or a square about 5 inches by 7 inches that is usually buried in the cotton stuffing of the rear seat, in the backrest of the front seat, or drivers bucket. If you are lucky enough to find this, (the mice usually have other plans for it) then photocopy it immediately and put it away in a safe place, the last thing you want is to lose it after having it right under your butt for so long. Build sheets usually confirm what the cowl tag will tell you, but in more depth.
  
== '''MORE RPO CODES BELOW THE FOLLOWING TEXT''' ==
+
Build sheets consist of the following information:
 +
*The model number, starts with 1 followed by 4 or more numbers, eg 12467.
 +
*A pair of letters will designate the paint code.
 +
*A three number series will designate the interior.
 +
*A series of one letter and two numbers indicates the factory installed options.
  
 +
==Body tag location==
 +
'''VIN:''' The Vehicle Identification Number of your car.
 +
*From '53 to '60, it is in the driver's side door jam.
 +
*From '60 to '62, it is on the steering column in the engine compartment.
 +
*From '63 to '67, it is under the glove box. The VIN of the 1964 to 1967 Chevrolet is on a metal plate riveted inside the driver door jamb.
 +
*From '68 to '03, it is in the driver's side windshield pillar.
 +
In addition to the VIN plate, partial VIN numbers are sometimes stamped on the rear frame rail or some other locations depending on the year and make/model.
 
   
 
   
 +
==Casting numbers and date codes==
 +
{{Note1}}See the links under '''''Resources''''' for more info on casting numbers and date codes, etc.
  
W=tinted windshield
+
When a part is cast, the mold has a part number and a date code set so that it is part of the mold and the part is forever identified. Most older Chevy parts such as heads, blocks, and manifolds, usually have a 7 digit casting number beginning with 3 to identify the part.
  
X=power windows
+
The date code on a SBC is typically on the bellhousing flange behind the distributor. On early big blocks, it was on the passenger side near the pan rail, but later (1970) moved up to the same location as the SBC. Usually the date is given as a letter, a number and then a number, such as B 23 3 which is for February 23, 1963. With any engine still having ignition shielding on, you have a very hard time to see the date. A good flashlight and a wire brush to clean any dirt are a must, even with the shielding removed.
 
+
L=folddown seat
+
 
+
D=power top
+
+
E=All glass tinted
+
 
   
 
   
M=powerglide
+
===Partial VIN===
 +
Stamped on the engine pad located in front of the right head. An engine identifier known as the "suffix code" is also stamped here.
  
G=center console
+
==Heads==
 +
The casting number is usually in the area under the rocker arms. Years of baked oil may fill the numbers to make them hard to read. On some heads, partial numbers were found on the intake runners on the block side, such as the 461 and 462 heads.
  
L=4 speed manual
+
==Carburetor==
 
+
Either on brass tag or stamped in air horn or body, depending on the carb. Part Number Either on brass tag or stamped into air horn or body, depending on the carb.
F=A/C
+
 
+
B=3 speed manual on floor
+
 
+
S=rear antenna
+
 
+
U=8 track multiplex
+
 
+
R=rear speaker
+
 
+
S= Z-23 interior
+
 
+
L= Z-22 (RS)
+
 
+
K= Z-21 style trim
+
 
+
B= rear window defroster
+
 
+
D=clock and/or gages
+
 
+
'''Engine codes....'''
+
 
+
SS350= P
+
 
+
SS396/325hp= N
+
 
+
SS396/375hp= K
+
 
+
== '''Body...''' ==
+
  
 +
Most of the earlier carburetors were built by Carter and had an identifier tag attached to a cover bolt. This tag had the part number and date code. On Holley carbs, the list number is stamped on the drivers side air horn in front along with either a 3 digit or 4 digit date code. The Rochester Quadrajet has a stamped number on the driver's side on a vertical pad on the secondary casting of the carb body.
 
   
 
   
'''VIN:''' The Vehicle Identification Number of your car.
+
===Fuel Injection 1957-'65===
+
Stamped on a metal tag on the left front of the plenum. Serial number Stamped on side of plenum for the first hundred or so in 1957 and then were stamped on the metal tag. The serial number does not have to correspond to the car's serial number. it is all gay
From '53 to '60, it is in the driver's side door jam.
+
+
From '60 to '62, it is on the steering column in the engine compartment.
+
  
From '63 to '67, it is under the glove box.  
+
==Intake Manifold==
 +
The small block usually has the date on the driver's side rear runner. The date is typically below the casting part number. The firing order (18436572) is usually cast on the front runner so do not confuse it with the part number. Some big block intakes have the date cast under the intake so that you must have the intake off the engine to see it.  
  
From '68 to '03, it is in the driver's side windshield pillar.
+
==Distributor==
 
+
Stamped in aluminum housings and embossed on a tag on iron units. Date Code Same as Part Number.
 
+
== '''Engine...''' ==
+
 
+
+
'''Casting Number:''' The part number cast into the block when made.
+
 
   
 
   
'''Casting Date:''' The date of the casting of the block.  
+
==Water pump==
 +
The water pump has a date code cast into the body in the front but the pulley must be removed to see it usually.
  
'''Partial VIN:''' Stamped on the engine pad located in front of the right head. An engine identifier is also stamped here.
+
==Alternator/Generator==
 +
Stamped on top with date and amperage rating. Date Code Stamped on top along with amperage rating and part number.
 
   
 
   
'''Bellhousing...Casting Number:''' The part number cast into the right side near starter.
+
==Exhaust Manifold==
+
Usually on the outside of the manifold. Small block Ram Horn manifolds usually have this on your left as you view them. The big block manifolds are down the side.  
'''Transmission....Casting Number''' Part Number cast into the case and tailshaft when made.
+
+
'''Date Code''' Usually the casting date is in the body but this is the case date. The assembly date is stamped in as part of identifier code.
+
+
'''Partial VIN''' Stamped along top of mounting ear in some, along joint of main case, or on a raised pad in the main body (newer T-10).
+
 
+
'''Rear End...Date code''' Cast in drivers side of housing for the case of '63-'79. In straight axle '53 to '62 Corvettes, the identifier is stamped on the front right side. In the IRS, the assembly date is stamped in identifier on the bottom flange. Gear ratio Stamped in bottom flange as part of identifier as a letter code, such as AW.
+
 
+
'''Alternator/Generator...Part Number''' Stamped on top with date and amperage rating. Date Code Stamped on top along with amperage rating and part number.
+
+
'''Water Pump Casting Number...Casting Date''' Code Cast on front of the pump.
+
+
'''Radiator...Part Number''' Stamped in aluminum, embossed in copper. Date Code Stamped in Aluminum.
+
 
+
'''Distributor...Part number''' Stamped in aluminum housings and embossed on a tag on iron units. Date Code Same as Part Number.
+
+
'''Window Glass...Date Codes''' Each window has its own as part of the marking.
+
+
'''Carburetor...Date Code''' Either on brass tag or stamped in air horn or body, depending on the carb. Part Number Either on brass tag or stamped into air horn or body, depending on the carb.
+
+
'''Fuel Injection '57-'65...Part Number''' Stamped on a metal tag on the left front of the plenum. Date Code..Serial Number Stamped on side of Plenum for the first hundred or so in 1957 and then were stamped on the metal tag. The serial number does not have to correspond to the car's serial number.
+
 
+
'''Heads...Casting Number''' Usually cast on top under rocker arms. Date Code Usually cast on top under rocker arms.
+
 
+
 
+
 
+
== '''Casting Numbers:''' ==
+
 
+
 
+
When a part is cast, the mold has a part number and a date code set so that it is part of the mold and the part is forever identified. Most older Corvette parts such as heads, blocks, and manifolds, usually have a 7 digit casting number beginning with 3 to identify the part.
+
 
+
'''Engine Block:''' On most blocks, the casting number is located on the bellhousing flange behind the driver's side head. The casting number does not usually correspond to any engine part number as the engine part number is for the assembly, not the casting.
+
 
+
'''Cylinder Heads:''' The casting number is usually in the area under the rocker arms. Years of baked oil may fill the numbers to make them hard to read. On some heads, partial numbers were found on the intake runners on the block side, such as the 461 and 462 heads.
+
 
+
'''Intake Manifolds:''' Usually on the rear runner on top.
+
 
+
'''Exhaust Manifolds:''' Usually on the outside of the manifold. Small block Ram Horn manifolds usually have this on your left as you view them. The big block manifolds are down the side.
+
 
+
'''Transmission Casting:''' The numbers are on both the main body and the tailshaft housing, usually on the right side.
+
 
+
'''Rear End:''' The casting number is located on the right side near the prop shaft.
+
 
+
'''Water Pump:''' The casting number is on the front of the body.
+
 
+
 
+
== '''Corvette Date Codes and Where Are They?''' ==
+
 
+
 
+
Almost every mechanical part made for a Corvette has a date code, either cast or stamped into it. These simply identify when the part was made. To the factory, this date probably made sure that they didn't leave any stock laying on the shelf too long, although if you have ever watched any factory production line run, it is doubtful if anyone ever reads the dates. The purpose of the date to Chevrolet was probably to ensure a means to track any defects should they arise. If a part dated March 3 and one dated March 21 were both defective, attention could be paid to those parts built between those dates for other possible defects. Today, these are used to determine if the part is correct for that Corvette, as an engine with a date code of D 16 5 (April 16, 1965) could not be correct for a '63 Corvette as the engine was made after the car was made. Parts too early are usually not correct either, as they would have been installed on an earlier vehicle, such as a B 23 3 (Feb. 23, 1963) in a '67 Corvette. NCRS provides a window of 6 months on date codes prior to the build date of the car. Obviously, a part on a car could not have been made AFTER the car was made._ But given how new items were constantly loaded on shelves, with existing items being shoved further back each time, a part could sit for many months before being assembled on a car. Usually, the parts were used within a few days or weeks but there are many documented original cars that have parts several months old. Be sure to notice that some parts have both a casting and a stamped date code. These can be several days apart. The stamped date code is when the part was assembled and should be the one considered.
+
 
+
'''Engine Block:''' The date code on a SBC is typically on the bellhousing flange behind the distributor. On early big blocks, it was on the passenger side near the pan rail, but later (1970) moved up to the same location as the SBC. Usually the date is given as a letter, a number and then a number, such as B 23 3 which is for February 23, 1963. With any engine still having ignition shielding on, you have a very hard time to see the date. A good flashlight and a wire brush to clean any dirt are a must, even with the shielding removed.
+
 
+
'''Cylinder Heads:''' The date code is located on top under the rocker arms. You must remove the valve covers to see them. Often lead deposits in old engines have filled the numbers and letters so they are hard to read. Often the rockers are in the way.
+
 
+
'''Intake Manifold:''' The small block usually has the date on the driver's side rear runner. The date is typically below the casting part number. The firing order (18436572) is usually cast on the front runner so do not confuse it with the part number. Some big block intakes have the date cast under the intake so that you must have the intake off the engine to see it._
+
 
+
 
+
'''Exhaust Manifolds:''' Usually on the outside of the manifold. Small block Ram Horn manifolds usually have this on your left as you view them. The big block manifolds are down the side.
+
 
+
'''Transmission Casting:''' The numbers are on both the main body and the tailshaft housing, usually on the right side.
+
 
+
'''Rear End:''' The casting number is located on the right side near the prop shaft.
+
 
+
'''Water Pump:''' The casting number is on the front of the body.
+
 
+
 
+
== '''Chevrolet Date Codes and Where Are They?''' ==
+
 
+
 
+
Almost every mechanical part made for a Chevrolet has a date code, either cast or stamped into it. These simply identify when the part was made. To the factory, this date probably made sure that they didn't leave any stock laying on the shelf too long, although if you have ever watched any factory production line run, it is doubtful if anyone ever reads the dates. The purpose of the date to Chevrolet was probably to ensure a means to track any defects should they arise. If a part dated March 3 and one dated March 21 were both defective, attention could be paid to those parts built between those dates for other possible defects. Today, these are used to determine if the part is correct for that Chevrolet , as an engine with a date code of D 16 5 (April 16, 1965) could not be correct for a '63 Chevrolet as the engine was made after the car was made. Parts too early are usually not correct either, as they would have been installed on an earlier vehicle, such as a B 23 3 (Feb. 23, 1963) in a '67 Corvette. NCRS provides a window of 6 months on date codes prior to the build date of the car. Obviously, a part on a car could not have been made AFTER the car was made. But given how new items were constantly loaded on shelves, with existing items being shoved further back each time, a part could sit for many months before being assembled on a car. Usually, the parts were used within a few days or weeks but there are many documented original cars that have parts several months old. Be sure to notice that some parts have both a casting and a stamped date code. These can be several days apart. The stamped date code is when the part was assembled and should be the one considered.
+
 
+
'''Engine Block:''' The date code on a SBC is typically on the bellhousing flange behind the distributor. On early big blocks, it was on the passenger side near the pan rail, but later (1970) moved up to the same location as the SBC. Usually the date is given as a letter, a number and then a number, such as B 23 3 which is for February 23, and a year ending with "3". With any engine still having ignition shielding on, you have a very hard time to see the date. A good flashlight and a wire brush to clean any dirt are a must, even with the shielding removed.
+
 
+
'''Cylinder Heads:''' The date code is located on top under the rocker arms. You must remove the valve covers to see them. Often lead deposits in old engines have filled the numbers and letters so they are hard to read. Often the rockers are in the way.
+
 
+
'''Intake Manifold:''' The small block usually has the date on the driver's side rear runner. The date is typically below the casting part number. The firing order (18436572) is usually cast on the front runner so do not confuse it with the part number. Some big block intakes have the date cast under the intake so that you must have the intake off the engine to see it.
+
 
+
'''Exhaust Manifolds:''' The casting numbers on the Ram horn manifolds are on the outside near the 1-3 or 6-8 cylinders. On the big block manifolds, it is found low near the outlet. The date codes on the Ram Horn manifolds are found on the opposite end. On the big block manifolds, the date code is found on the back side.
+
 
+
'''Transmission:''' The Borg Warner transmission has a date cast into the main body and tailshaft in the early T10s. Some later T10s ('70s) have it also. Usually it is found on the passenger side. The Muncie has a date cast on the tailshaft. Unfortunately, these casting dates are the ones that the castings were made, not the transmission. A stamped number usually contains an assembly date. Rear end housingThe housing for the 1963 to 1979 differential has a casting date on the drivers side. Again, this is the case date code. The assembly date is stamped in the bottom of the case on the lip where the cover mates.
+
 
+
'''Alternator:''' The date code is stamped into the housing.  
+
  
'''Water Pump:''' The water pump has a date code cast into the body in the front but the pulley must be removed to see it usually.  
+
The casting numbers on the Ram horn manifolds are on the outside near the 1-3 or 6-8 cylinders. On the big block manifolds, it is found low near the outlet. The date codes on the Ram Horn manifolds are found on the opposite end. On the big block manifolds, the date code is found on the back side.
  
'''Carburetor:''' Most of the earlier carburetors were built by Carter and had an identifier tag attached to a cover bolt. This tag had the part number and date code. On Holley carbs, the List Number is stamped on the drivers side air horn in front along with either a 3 digit or 4 digit date code. The Rochester QuadraJet has a stamped number on the driver's side on a vertical pad on the secondary casting of the carb body.
+
==Transmission==
 +
The Borg Warner transmission has a date cast into the main body and tailshaft on the early T10. Some later T10s ('70s) have it also. Usually it is found on the passenger side. The Muncie has a date cast on the tailshaft. A stamped number usually contains an assembly date.
  
== '''Build Sheets''' ==
+
===Bellhousing===
 +
The part number cast into the right side near starter.
  
Build sheets are a small strip of paper, about 2 inches wide by 8 inches long or a square about 5 inches by 7 inches that is usually buried in the cotton stuffing of the rear seat, in the backrest of the front seat, or drivers bucket. If you are lucky enough to find this, (the mice usually have other plans for it) then photocopy it immediately and put it back, the last thing you want is to lose it after having it right under your butt for so long. If you make a copy and replace it you are ensuring that the next guy (hey, we all know you plan on keeping this one forever!) can enjoy the thrill of "finding" this original documentation. Build sheets usually confirm what the Cowl tag will tell you, but in more depth.
+
The tranny may also have a partial VIN stamped along top of mounting ear in some, along joint of main case, or on a raised pad in the main body (newer T-10).  
  
'''Build sheets consist of the following information:'''
+
==Rearend==
The model number, starts with 1 followed by 4 or more numbers.eg 12467.
+
The casting number is located on the right side near the prop shaft. Other codes are stamped into the axle tube.
A pair of letters will designate the paint code.
+
A three number series will designate the interior.  
+
A series of one letter and two numbers indicates the factory installed_ options.
+
  
 +
The date code is cast in drivers side of housing for the case of '63-'79. In straight axle '53 to '62 Corvettes, the identifier is stamped on the front right side. In the IRS, the assembly date is stamped in identifier on the bottom flange. Gear ratio Stamped in bottom flange as part of identifier as a letter code, such as AW.
  
== '''MORE RPO CODES:''' ==
+
The 1963 to 1979 rear end housing has a casting date on the drivers side. Again, this is the case date code. The assembly date is stamped in the bottom of the case on the lip where the cover mates.
  
  
 +
==More RPO codes==
 
00L : SECONDARY COLOR, EXTERIOR, PRIME  
 
00L : SECONDARY COLOR, EXTERIOR, PRIME  
  
 
00U : PRIMARY COLOR, EXTERIOR, PRIME  
 
00U : PRIMARY COLOR, EXTERIOR, PRIME  
  
01L : SECONDARY COLOR, EXTERIOR, SPECIAL (91)  
+
01L : SECONDARY COLOR, EXTERIOR, SPECIAL ('91)  
  
01U : PRIMARY COLOR, EXTERIOR, SPECIAL, (91)  
+
01U : PRIMARY COLOR, EXTERIOR, SPECIAL, ('91)  
  
02A : STRIPE COLOR, ACCENT, TWO TONE, BEIGE/GARNET (93)  
+
02A : STRIPE COLOR, ACCENT, TWO TONE, BEIGE/GARNET ('93)  
  
 
02L : SECONDARY COLOR, EXTERIOR, SPECIAL, CHART NOT  
 
02L : SECONDARY COLOR, EXTERIOR, SPECIAL, CHART NOT  
Line 870: Line 771:
 
02U : PRIMARY COLOR, EXTERIOR, SPECIAL, CHART NOT  
 
02U : PRIMARY COLOR, EXTERIOR, SPECIAL, CHART NOT  
  
04U : PRIMARY COLOR, EXTERIOR, FLAX PEARL, (92)  
+
04U : PRIMARY COLOR, EXTERIOR, FLAX PEARL, ('92)  
  
05P : WHEEL COLOR, ARGENT (91)  
+
05P : WHEEL COLOR, ARGENT ('91)  
  
06P : WHEEL COLOR, BLACK/SILVER (91)  
+
06P : WHEEL COLOR, BLACK/SILVER ('91)  
  
 
07A : STRIPE COLOR, ACCENT, TWO TONE, WHITE/MED BEECHWOOD**  
 
07A : STRIPE COLOR, ACCENT, TWO TONE, WHITE/MED BEECHWOOD**  
  
07P : WHEEL COLOR, GRAY/RED (91)  
+
07P : WHEEL COLOR, GRAY/RED ('91)  
  
08Q : MOLDING COLOR , MARY KAY PINK (91)  
+
08Q : MOLDING COLOR , MARY KAY PINK ('91)  
  
08U : PRIMARY COLOR, EXTERIOR, MARY KAY PINK (91)  
+
08U : PRIMARY COLOR, EXTERIOR, MARY KAY PINK ('91)  
  
 
09A : STRIPE COLOR, ACCENT, TWO TONE, WHITE/DK SAPPHIRE  
 
09A : STRIPE COLOR, ACCENT, TWO TONE, WHITE/DK SAPPHIRE  
  
09U : PRIMARY COLOR, EXTERIOR, OPAQUE WHITE (91)  
+
09U : PRIMARY COLOR, EXTERIOR, OPAQUE WHITE ('91)  
  
 
1.0 : TRIM COMBINATION, LEATHER, MED SLATE GRAY (2) (3t1  
 
1.0 : TRIM COMBINATION, LEATHER, MED SLATE GRAY (2) (3t1  
  
103 : TRIM COMBINATION, LEATHER, ARCTIC WHITE (93)  
+
103 : TRIM COMBINATION, LEATHER, ARCTIC WHITE ('93)  
  
10A : STRIPE COLOR, ACCENT, TWO TONE, LT GRAY/RED (91)  
+
10A : STRIPE COLOR, ACCENT, TWO TONE, LT GRAY/RED ('91)  
  
10I : INTERIOR TRIM, ARCTIC WHITE (93)  
+
10I : INTERIOR TRIM, ARCTIC WHITE ('93)  
  
10N : TRIM COMBINATION, VINYL, ARCTIC WHITE (N) (93)  
+
10N : TRIM COMBINATION, VINYL, ARCTIC WHITE (N) ('93)  
  
10P : WHEEL COLOR, GRAY WHITE (91)  
+
10P : WHEEL COLOR, GRAY WHITE ('91)  
  
10Q : MOLDING COLOR , ARCTIC WHITE (91)  
+
10Q : MOLDING COLOR , ARCTIC WHITE ('91)  
  
10T : TOP COLOR, ARCTIC WHITE (91)  
+
10T : TOP COLOR, ARCTIC WHITE ('91)  
  
10U : PRIMARY COLOR , EXTERIOR, ARCTIC WHITE (91)  
+
10U : PRIMARY COLOR , EXTERIOR, ARCTIC WHITE ('91)  
  
112 : TRIM COMBINATION, LEATHER, WHITE (2) (91)  
+
112 : TRIM COMBINATION, LEATHER, WHITE (2) ('91)  
  
113 : TRIM COMBINATION, LEATHER, WHITE (3) (91)  
+
113 : TRIM COMBINATION, LEATHER, WHITE (3) ('91)  
  
114 : TRIM COMBINATION, LEATHER, WHITE (4) (91)  
+
114 : TRIM COMBINATION, LEATHER, WHITE (4) ('91)  
  
115 : TRIM COMBINATION, LEATHER, WHITE (S) (91)  
+
115 : TRIM COMBINATION, LEATHER, WHITE (S) ('91)  
  
116 : TRIM COMBINATION, LEATHER, WHITE (6) (91)  
+
116 : TRIM COMBINATION, LEATHER, WHITE (6) ('91)  
  
119 : SEAT BELT COLOR WHITE (9) (91)  
+
119 : SEAT BELT COLOR WHITE (9) ('91)  
  
11I : INTERIOR TRIM , WHITE (I) (92)  
+
11I : INTERIOR TRIM , WHITE (I) ('92)  
  
11N : TRIM COMBINATION, VINYL, WHITE (N) (92)  
+
11N : TRIM COMBINATION, VINYL, WHITE (N) ('92)  
  
11P : WHEEL COLOR, PINK (92)  
+
11P : WHEEL COLOR, PINK ('92)  
  
 
11Q : MOULDING COLOR, WHITE  
 
11Q : MOULDING COLOR, WHITE  
  
122 : TRIM COMBINATION, LEATHER, GRAPHITE (2) (92)  
+
122 : TRIM COMBINATION, LEATHER, GRAPHITE (2) ('92)  
  
123 : TRIM COMBINATION, LEATHER, GRAPHITE (3) (92)  
+
123 : TRIM COMBINATION, LEATHER, GRAPHITE (3) ('92)  
  
124 : TRIM COMBINATION, LEATHER, GRAPHITE (4 ) (92)  
+
124 : TRIM COMBINATION, LEATHER, GRAPHITE (4 ) ('92)  
  
125 : TRIM COMBINATION, LEATHER, GRAPHITE (S) (92)  
+
125 : TRIM COMBINATION, LEATHER, GRAPHITE (S) ('92)  
  
126 : TRIM COMBINATION, LEATHER, GRAPHITE (6) (92)  
+
126 : TRIM COMBINATION, LEATHER, GRAPHITE (6) ('92)  
  
128 : TRIM COMBINATION, CLOTH, GRAPHITE (B) (92)  
+
128 : TRIM COMBINATION, CLOTH, GRAPHITE (B) ('92)  
  
129 : SEAT BELT COLOR, GRAPHITE (92)  
+
129 : SEAT BELT COLOR, GRAPHITE ('92)  
  
 
12A : STRIPE COLOR ACCENT SILVER MET (91)  
 
12A : STRIPE COLOR ACCENT SILVER MET (91)  
  
12B : TRIM COMBINATION,CLOTH, GRAPHITE (B) (92)  
+
12B : TRIM COMBINATION,CLOTH, GRAPHITE (B) ('92)  
  
12C : TRIM COMBINATION,CLOTH, GRAPHITE (C) (92)  
+
12C : TRIM COMBINATION,CLOTH, GRAPHITE (C) ('92)  
  
12D : TRIM COMBINATION,CLOTH, GRAPHITE (D) (92)  
+
12D : TRIM COMBINATION,CLOTH, GRAPHITE (D) ('92)  
  
12E : TRIM COMBINATION CLOTH, GRAPHITE (E) (92)  
+
12E : TRIM COMBINATION CLOTH, GRAPHITE (E) ('92)  
  
12F : COVERING COLOR FLOOR MAT, GRAPHITE (92)  
+
12F : COVERING COLOR FLOOR MAT, GRAPHITE ('92)  
  
12H : TRIM COMBINATION CLOTH GRAPHITE (H) (92)  
+
12H : TRIM COMBINATION CLOTH GRAPHITE (H) ('92)  
  
12I : INTERIOR TRIM, GRAPHITE (92)  
+
12I : INTERIOR TRIM, GRAPHITE ('92)  
  
12K : AUX TOP COLOR WHITE (91)  
+
12K : AUX TOP COLOR WHITE ('91)  
  
12L : SECONDARY COLOR, EXTERIOR, SILVER MET (91)  
+
12L : SECONDARY COLOR, EXTERIOR, SILVER MET ('91)  
  
 
12P : WHEEL COLOR PLATINUM  
 
12P : WHEEL COLOR PLATINUM  
  
12Q : MOLDING COLOR, SILVER MET (91)  
+
12Q : MOLDING COLOR, SILVER MET ('91)  
  
12U : PRIMARY COLOR, EXTERIOR SILVER MET (91)  
+
12U : PRIMARY COLOR, EXTERIOR SILVER MET ('91)  
  
132 : TRIM COMBINATION, LEATHER, GRAY (2) (91)  
+
132 : TRIM COMBINATION, LEATHER, GRAY (2) ('91)  
  
13A : STRIPE COLOR, ACCENT, BRIGHT SILVER MET (91)  
+
13A : STRIPE COLOR, ACCENT, BRIGHT SILVER MET ('91)  
  
13B : TRIM COMBINATION, CLOTH, LT SLATEGRAY (B) (92)  
+
13B : TRIM COMBINATION, CLOTH, LT SLATEGRAY (B) ('92)  
  
 
13C : TRIM COMBINATION, CLOTH, LT SLATEGRAY (C)  
 
13C : TRIM COMBINATION, CLOTH, LT SLATEGRAY (C)  
Line 976: Line 877:
 
13D : TRIM COMBINATION, CLOTH, LT SLATEGRAY (D)  
 
13D : TRIM COMBINATION, CLOTH, LT SLATEGRAY (D)  
  
13E : TRIM COMBINATION, CLOTH, LT SMOKE GRAY (E) (92)  
+
13E : TRIM COMBINATION, CLOTH, LT SMOKE GRAY (E) ('92)  
  
13G : TRIM COMBINATION, CLOTH, LT GRAY (G) (91T)  
+
13G : TRIM COMBINATION, CLOTH, LT GRAY (G) ('91)  
  
13H : TRIM COMBINATION, CLOTH, LT SMOKE GRAY (H) (91)  
+
13H : TRIM COMBINATION, CLOTH, LT SMOKE GRAY (H) ('91)  
  
13I : INTERIOR TRIM, LT SMOKE GRAY (91)  
+
13I : INTERIOR TRIM, LT SMOKE GRAY ('91)  
  
13L : SECONDARY COLOR, EXTERIOR, BRIGHT SILVER MET (91)  
+
13L : SECONDARY COLOR, EXTERIOR, BRIGHT SILVER MET ('91)  
  
13Q : MOLDING COLOR, BRT SILVER MET (91)  
+
13Q : MOLDING COLOR, BRT SILVER MET ('91)  
  
13T : TOP COLOR, BRIGHT SILVER MET (91)  
+
13T : TOP COLOR, BRIGHT SILVER MET ('91)  
  
13U : PRIMARY COLOR , EXTERIOR, BRIGHT SILVER MET (91)  
+
13U : PRIMARY COLOR , EXTERIOR, BRIGHT SILVER MET ('91)  
  
 
13V : TRIM COMBINATION, VINYL, LT GRAY (V)  
 
13V : TRIM COMBINATION, VINYL, LT GRAY (V)  
Line 996: Line 897:
 
13W : TRIM COMBINATION, VINYL, LT GRAY (W)  
 
13W : TRIM COMBINATION, VINYL, LT GRAY (W)  
  
142 : TRIM COMBINATION, LEATHER, LT GRAY (2) (92)  
+
142 : TRIM COMBINATION, LEATHER, LT GRAY (2) ('92)  
  
143 : TRIM COMBINATION, LEATHER, LT GRAY (3) (92)  
+
143 : TRIM COMBINATION, LEATHER, LT GRAY (3) ('92)  
  
144 : TRIM COMBINATION, LEATHER, LT GRAY (4) (92)  
+
144 : TRIM COMBINATION, LEATHER, LT GRAY (4) ('92)  
  
145 : TRIM COMBINATION, LEATHER, LT GRAY (5) (92)  
+
145 : TRIM COMBINATION, LEATHER, LT GRAY (5) ('92)  
  
146 : TRIM COMBINATION, LEATHER, LT GRAY (6) (92)  
+
146 : TRIM COMBINATION, LEATHER, LT GRAY (6) ('92)  
  
149 : SEAT BELT, COLOR, LT GRAY (92)  
+
149 : SEAT BELT, COLOR, LT GRAY ('92)  
  
 
14A : STRIPE COLOR ACCENT, LT GRAY (91)  
 
14A : STRIPE COLOR ACCENT, LT GRAY (91)  
  
14B : TRIM COMBINATION, CLOTH, LT GRAY (B) (92)  
+
14B : TRIM COMBINATION, CLOTH, LT GRAY (B) ('92)  
  
14C : TRIM C0MBINATION, CLOTH, LT GRAY (C) (92)  
+
14C : TRIM C0MBINATION, CLOTH, LT GRAY (C) ('92)  
  
14D : TRIM C0MBINATION, CLOTH, LT GRAY (D) (92)  
+
14D : TRIM C0MBINATION, CLOTH, LT GRAY (D) ('92)  
  
14E : TRIM COMBINATION, CLOTH, LT GRAY (E) (92)  
+
14E : TRIM COMBINATION, CLOTH, LT GRAY (E) ('92)  
  
14F : COVERING COLOR, FLOOR MAT, LT GRAY (92)  
+
14F : COVERING COLOR, FLOOR MAT, LT GRAY ('92)  
  
14G : TRIM COMBINATION, CLOTH, LT GRAY (G) (92)  
+
14G : TRIM COMBINATION, CLOTH, LT GRAY (G) ('92)  
  
14H : TRIM C0MBINATION, CLOTH, LT GRAY (H) (93)  
+
14H : TRIM C0MBINATION, CLOTH, LT GRAY (H) ('93)  
  
14I : INTERIOR TRIM , LT GRAY (I) (92)  
+
14I : INTERIOR TRIM , LT GRAY (I) ('92)  
  
14J : TRIM COMBINATION, CLOTH, LT GRAY J (93)  
+
14J : TRIM COMBINATION, CLOTH, LT GRAY J ('93)  
  
14L : SECONDARY COLOR, XTERIOR, LT GRAY MET (92)  
+
14L : SECONDARY COLOR, XTERIOR, LT GRAY MET ('92)  
  
 
14N : TRIM COMBINATION, VINYL, LIGHT GRAY (N) (92)  
 
14N : TRIM COMBINATION, VINYL, LIGHT GRAY (N) (92)  
  
14Q : M0LDING COLOR , BLACK 4ET, (91)  
+
14Q : M0LDING COLOR , BLACK 4ET, ('91)  
  
14R : TRIM COMBINATION, VINYL, LT GRAY (R) (92)  
+
14R : TRIM COMBINATION, VINYL, LT GRAY (R) ('92)  
  
14U : PRIMARY COLOR , EXTERIOR, LT GRAY 4ET (92)  
+
14U : PRIMARY COLOR , EXTERIOR, LT GRAY 4ET ('92)  
  
154 : TRIM COMBINATION, LEATHER, MED SLATE GRAY (4) (91)  
+
154 : TRIM COMBINATION, LEATHER, MED SLATE GRAY (4) ('91)  
  
155 : TRIM C0MBINATION, LEATHER, MED SLATE GRAY (5) (91)  
+
155 : TRIM C0MBINATION, LEATHER, MED SLATE GRAY (5) ('91)  
  
156 : TRIM COMBINATION, LEATHER, MED SLATE GRAY (6) (91)  
+
156 : TRIM COMBINATION, LEATHER, MED SLATE GRAY (6) ('91)  
  
159 : SEAT BELT COLOR, MED SLATE GRAY (91)  
+
159 : SEAT BELT COLOR, MED SLATE GRAY ('91)  
  
15A : STRIPE COLOR, ACCENT, MED GRAY MET, (91)  
+
15A : STRIPE COLOR, ACCENT, MED GRAY MET, ('91)  
  
 
15B : TRIM COMBINATION, CLOTH, MED SLATE (91)  
 
15B : TRIM COMBINATION, CLOTH, MED SLATE (91)  
Line 5,447: Line 5,348:
  
 
JM8 : BRAKE SYSTEM PWR, FRT DISC RR DRUM, ALUMINUM,  
 
JM8 : BRAKE SYSTEM PWR, FRT DISC RR DRUM, ALUMINUM,  
 +
 +
J1E : ENGINE, GAS, 8 CYL, SPECIAL ORDER LS3, 465 - 465 HP COMP
  
 
K01 : FAN, CLUTCH DRIVE, ON/OFF ]  
 
K01 : FAN, CLUTCH DRIVE, ON/OFF ]  
Line 5,813: Line 5,716:
  
 
M31 : TRANSMISSION, AUTO THM 250 CONV CLUTCH  
 
M31 : TRANSMISSION, AUTO THM 250 CONV CLUTCH  
 +
 +
M31 : TORQUE CONVERTER 2-SPD (Used for 1964 Lemans - Believed to be for the 2 Speed Super Turbine / ST-300 Automatic Transmission)
  
 
M32 : TRANSMISSION, MAN 5 SPD ISUZU 76MM 3.72 1ST, .70  
 
M32 : TRANSMISSION, MAN 5 SPD ISUZU 76MM 3.72 1ST, .70  
Line 7,682: Line 7,587:
 
Z08 : MODEL CONVERSION, CONVERTIBLE  
 
Z08 : MODEL CONVERSION, CONVERTIBLE  
  
Z09 : MODEL CONVERSION, CAPRICE CLASSIC  
+
Z09 : ORIGINALLY THE COSWORTH VEGA PERFORMANCE PACKAGE. THEN LATER, MODEL CONVERSION, CAPRICE CLASSIC  
  
 
Z10 : MODEL CONVERSION, CARGO VAN  
 
Z10 : MODEL CONVERSION, CARGO VAN  
Line 7,811: Line 7,716:
  
 
ZR1 : PERFORMANCE PACKAGE, SPECIAL COUPE  
 
ZR1 : PERFORMANCE PACKAGE, SPECIAL COUPE  
 +
 +
ZR5 : APPEARANCE PACKAGE, NOMAD
  
 
ZR9 : APPEARANCE PACKAGE, "SYCLONE" PICKUP  
 
ZR9 : APPEARANCE PACKAGE, "SYCLONE" PICKUP  
Line 7,826: Line 7,733:
 
ZW6 : WINDOW PKG, COMPLETE BODY  
 
ZW6 : WINDOW PKG, COMPLETE BODY  
  
ZW9 : B0DY EQUIPMENT, BASE BODY OR CHASSIS  
+
ZW9 : B0DY EQUIPMENT, BASE BODY OR CHASSIS
 +
 
 +
ZX1 : MONZA MIRAGE CONVERSION
  
 
ZX2 : SEATING ARRANGEMENT, DRIVER & PASSENGER, HIGHBACK  
 
ZX2 : SEATING ARRANGEMENT, DRIVER & PASSENGER, HIGHBACK  
Line 7,835: Line 7,744:
  
 
ZY1 : COLOR COMBINATION, SOLID
 
ZY1 : COLOR COMBINATION, SOLID
 +
 +
==Related links==
 +
*[http://www.crankshaftcoalition.com/wiki/Category:RPO_GM_build_codes RPO GM build codes]
 +
*[[General Motors body codes]]
 +
 +
==Resources==
 +
*[[Chevy engine casting numbers]]
 +
*[[Identifying Chevy engines]]
 +
*[[SBC cylinder head identification]]
  
 
[[Category:Identification and decoding]]
 
[[Category:Identification and decoding]]
 +
[[Category:RPO GM build codes]]
 
[[Category:Good articles]]
 
[[Category:Good articles]]
 +
[[Category:GM]]

Latest revision as of 21:40, 20 December 2022

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