Pages 35–48 (14 pages)

Corvette 4-Speed Transmission

From the 1956–1960 Chevrolet Corvette Chassis Service Operations: Engines and RPO Equipment

Full service for the Corvette four-speed synchromesh transmission: its design, with ratios of 2.2, 1.66, 1.31 and 1.00 and an unsynchronized reverse; shift linkage adjustment with a gage block; and an exploded view with 80 parts called out. Minor service covers the speedometer driven gear, side cover and mainshaft oil seal. Major service covers removal, disassembly, cleaning and inspection, rear idler and reverse shifter shafts, synchronizers, mainshaft and countergear assembly with selective snap rings, and installation. A troubles-and-remedies chart closes the section.

Read this section free, starting at page 35

What this section covers

  • Shift linkage adjustment
  • Speedometer driven gear and side cover
  • Removal and disassembly
  • Cleaning and inspection
  • Mainshaft and countergear assembly
  • Installation and lubricant
  • Troubles and remedies
Year
1956, 1957, 1958, 1959, 1960
Make
Chevrolet
Vehicle
Components and Systems, Corvette, Fuel Injection, Passenger Cars
Type
Service Manual
Models
Corvette V-8: single and dual four-barrel, Fuel Injection (7014800, 7014900, 7017200, 7017300, 7017310)
Pages
109

What’s inside

Front matter

  1. Foreword and Title PageThe foreword explains why the booklet was written, how its two sections are organized and which passenger car shop manuals to use alongside it. It says the booklet covers Corvettes from 1956 on. The title page names it 1956–1960 Corvette Chassis Service Operations.pp. 1–2

Tuning the Corvette engine

  1. Tune-Up: Mechanical Checks and Adjustmentspp. 3–18
  2. Tune-Up: Instrument Check-Outpp. 19–26
  3. Additional Checks and AdjustmentsTests to use when the tune-up turns up a problem or the owner has a specific complaint. The cylinder balance test grounds pairs of cylinders by firing order and compares rpm and vacuum. The fuel pump test checks volume and pressure. The cooling system pressure test looks for internal and external leaks.pp. 27–29

Regular Production Options

  1. Heavy-Duty Brakes and Suspensionpp. 30–33
  2. Close-Ratio Transmission and Engine ConstructionThe close-ratio three-speed transmission, which starts at the foot of the previous page, with its 2.2, 1.31 and 1-to-1 ratios and clutch gear removal sequence. It is followed by how each Corvette engine differs from the passenger car V-8: chrome-plated rings, five-quart oil pan, notched or domed pistons, and the special-cam engines' bearings and balancing. Valve clearance settings continue at the top of the next page.pp. 34–34
  3. Corvette 4-Speed Transmissionpp. 35–48
  4. Positraction Rear Axlepp. 49–55
  5. Fuel Injection: Fundamentals of Operationpp. 56–72
  6. 7014800 Fuel Injection Service Procedurespp. 73–95
  7. 7014900, 7017300, 7017200 and 7017310 Fuel Injectionpp. 96–103
  8. Fuel Flow Calibrationpp. 104–109