These are Original 1980 Chevrolet passenger car ENGINEERING SPECIFICATIONS which was only distributed to Chevrolet Central Office, Zone and Regional Office Service Managers and Field Service Representatives. This information was  restricted to factory use only and were never sent to dealers.

These Specifications Dated October 1979 were the internal Chevy reference for all car model numbers, specifications, dimensions, component material descriptions, options and accessories. The data is very technical and is loaded with great info for us today. All cars are covered in extreme detail, with separate sections for the Caprice, Impala, Malibu, Monte Carlo, Camaro, Corvette, Citation, & Chevette....over 400 pages in all, which were published in October of 1979. Corvette alone is 41 pages. These are contained in a locking post-bound dark blue leatherette binder measuring 10" x 11 1/2" & over 3" thick and will weigh over 7 pounds

These Specifications goes far beyond the information that dealers received. I will include some examples at the end of this write-up. These came from a retired Chevy employee.

Each section of Engineering Specs are subdivided into sections for each car line (Camaro, Corvette etc.) There are tabs showing separation of car lines. Each Car line has the following separate categories of information: Each category has  The following tabs.

          + General Information: VIN, code & serial explanations; model                   illustrations; charts of Standard, Extra Cost Equipment & Air       Conditioning equipment;

+ Dimensions & Weights: Lots of charts & diagrams here!

+ Body: Charts for Exterior & Interior color combinations; body glass charts, body construction and the exterior paint process.

+ Chassis: Illustrations, specs and material used in suspension, rear axles, frames, brakes, springs. drive shafts, wheels, tires & electrical            components.

  + Power Trains: Every conceivable component of the engines &     transmissions is covered here, right down to camshaft specs and       materials. and so much, much more.

I have included some photos which have samples of the specs.

This huge book comes with a locking post-bound dark blue leatherette covered "Product Assurance" locking post-bound dark blue leatherette binder measuring 10" x 12" x 3" thick and weighing over 6 pounds. This was the 1980 Chevy Bible! all the inside pages are in Excellent condition with No marks, smudges, fingerprints or tears. The outer edges have yellowed some from age.

Truck Specifications are not included as these are Passenger Car Only.

These are Authentic Originals - Not copies like others on E-bay

Some Uncommon Specifications & information Examples

·         Every known Standard. & RPO Option Codes

·         Every imaginable body interior & interior Dimension weights, IE   Shipping & Curb weights , seat cushion height, seat cushion dereliction, Steering Wheel torso Clearance, etc. etc .

·         RPO & Reg. Option weights ( Elec. door locks 4 dr. 7 lbs,  Vinyl Roof Cover - 5 lbs, etc.  etc)

·         Body Glass Area for each model             Front Spindle diameter & material

·         Front & Rear Spring Codes, length, wire size, # coils, Deflection Rate, Free & working inches & lbs.

·         Every Bulb & Lamp. including the number required & Trade #. Candle power (ash tray lamp .7cp - clock 2cp - under hood  15cp, etc.)

·         Electrical Circuits, type of protections (fuse or breaker & sizes + locations)

·         Torque Multiplication -Every Engine in Every Gear with every axle ratio (5.0L V8 Low gear 12.90:;1 with 2.56 axle)

·         Every imaginable engine spec. (theoretical inner dia. effective length, projected area, etc.)

·         Piston ring depth, Pin bore off set

·         Exhaust pipe O.D. & wall thickness,            Oil pump regulator valve specifications,

·         Trans. Torque Stall ratio & RPM