Corvette 427 454 1973 Factory Service Repair Manual

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🏷️ Basic Information Identification Make: Chevrolet Model: Corvette Model Variant: 427 Year: 1973 Codes Engine Code Primary: LS4 Chassis Code: C3 👋 Introduction Market Position Target Audience: Corvette enthusiasts, classic...

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Type: Car

Vendor:

Sku: 449769

Tags: 1973 427 454 Car Cars Chevrolet Corvette Misc

Product variants

Description

🏷️ Basic Information

Identification

Make:

Chevrolet

Model:

Corvette

Model Variant:

Year:

Codes

Engine Code Primary:

Chassis Code:

👋 Introduction

Market Position

Target Audience:

Corvette enthusiasts, classic car restorers, independent mechanics, DIY owners

Competitive Analysis

Value Proposition:

Provides authoritative, factory-level repair information, crucial for maintaining and restoring a valuable classic Corvette.

Key Features

Manual Advantage:

Official factory data ensures accuracy and completeness, avoiding guesswork and incorrect repairs.

Content Scope:

Covers all mechanical and electrical systems specific to the 1973 Corvette with the 427/454 engine options.

📋 Manual Details

Coverage Areas

Coverage:

Complete Factory Service and Repair

Page Count

Estimated Pages:

Hundreds (Specific count not provided, but implies comprehensive)

Manual Type

Type:

Factory Service Manual / Repair Manual

Language

Language:

English

Format

Format:

Downloadable PDF

📖 Manual Coverage

Systems Covered

Powertrain:

Engine (427ci, 454ci), Transmission (Manual & Automatic), Drivetrain

Chassis:

Suspension (Front & Rear), Steering, Brakes (Front Disc, Rear Disc), Frame

Electrical:

Wiring Diagrams, Lighting, Ignition System, Starting System, Charging System, Instrumentation, Accessories

Body:

Body Panels, Doors, Hood, Trunk, Interior Trim, Glass, Bumpers

Procedures Included

Maintenance:

Scheduled Maintenance, Lubrication, Fluid Changes, Filter Replacements

Repair:

Engine Overhaul, Transmission Rebuild, Brake System Repair, Suspension Component Replacement, Electrical Troubleshooting

Diagnostics:

Troubleshooting Guides, Symptom-Based Diagnostics, Component Testing Procedures

Technical Depth

Depth:

Comprehensive (from basic adjustments to complete component disassembly and reassembly)

📊 Manual Specifications

File Format

PDF Quality:

High-resolution, printable

Searchable Text:

Likely (standard for quality PDF manuals)

Print Quality

Printability:

Full or selective page printing supported

Binding Type

Binding Ideal For Print:

Coil or comb binding recommended for lay-flat use in a shop environment

Paper Type

Paper Recommendation:

Durable, coated paper for shop use to resist oil and grease

⚙️ Engine Specifications

Primary Engine

Engine Name Primary:

L48 454 V8 (454 cubic inches)

Engine Name Secondary:

LS4 454 V8 (454 cubic inches) - Higher Performance Variant

Engine Code Secondary:

Performance

Horsepower Ls4:

275 net hp @ 4000 rpm (SAE Gross, potentially higher depending on exact configuration, but net is more relevant)

Torque Ls4:

395 lb-ft net @ 3200 rpm

Horsepower L48:

275 net hp @ 4000 rpm (Standard)

Torque L48:

390 lb-ft net @ 3200 rpm

Fuel System

Fuel Delivery Ls4:

Rochester Quadrajet 4-barrel carburetor

Fuel Delivery L48:

Rochester Quadrajet 4-barrel carburetor

Ignition System:

High-energy electronic ignition (HEI) with single coil

🔧 Transmission

Standard

Standard Transmission:

Muncie M20/M21 4-speed manual

Optional

Optional Transmission:

Turbo Hydra-Matic 400 (THM400) 3-speed automatic

Features

Manual Transmission Features:

Close-ratio gearsets available (M21), robust construction.

Automatic Transmission Features:

Smooth shifting, durable, torque converter lock-up (later models, verify for '73).

📐 Dimensions

Exterior

Length:

175.1 inches

Width:

70.8 inches

Height:

47.0 inches

Wheelbase:

98.0 inches

Weights

Curb Weight Est:

3,600 - 3,800 lbs (depending on options)

Gross Vehicle Weight Rating Est:

4,400 lbs

🛡️ Safety Features

Ratings

Safety Ratings Era:

Early 1970s safety standards, no modern crash test ratings available.

Active Features

Active Safety Features:

Power front disc brakes, Rear disc brakes, Independent front suspension, Rear independent suspension

Passive Features

Passive Safety Features:

Lap belts, Steel-reinforced chassis and body structure, Padded interior surfaces

💡 Technology Features

Infotainment

Infotainment System:

AM/FM radio (optional AM/FM stereo, optional 8-track tape player)

Driver Assistance

Driver Assistance Features:

None by modern standards; features focused on the driving experience.

Connectivity

Connectivity Features:

No external connectivity features; internal focus on mechanical and electrical systems.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000-5,000 miles or 6 months (depending on usage and oil quality, consult manual)

Tune Up Interval:

Typically every 12,000-24,000 miles for spark plugs, points (if not HEI), and filter replacements.

Fluid Specifications

Engine Oil Type:

API SF or SG classification, SAE 10W-30 or 10W-40 recommended (verify viscosity for climate)

Transmission Fluid Manual:

GL-4 gear oil (e.g., Mobil Mobilube HD 75W-90, or equivalent)

Transmission Fluid Automatic:

Dexron III/Mercon (or earlier spec depending on original fill, consult manual for exact spec)

Coolant Type:

Ethylene glycol based antifreeze/coolant, 50/50 mix with distilled water

Known Issues

Common Wear Items:

Brake components (pads, rotors, lines), suspension bushings, engine seals (oil leaks), carburetor adjustments, electrical connectors

Carburetor Issues:

Rochester Quadrajets can be finicky and require regular tuning or rebuilding due to age and fuel deposits.

Electrical Issues:

Corroded wiring connectors, aging insulation, and failing relays are common in vehicles of this age.

📚 Vehicle History

Brand Heritage

Brand Focus:

American icon for performance and sports cars.

Model Evolution

C3 Generation Era:

1968-1973 (early C3 Stingray).

1973 Specific Changes:

Last year for chrome bumpers on the front, new urethane-covered front bumper assembly.

Production

Production Volume 1973 Est:

~25,000 units (all models)

Engine Availability 454:

The 454ci V8 was a prominent, though optional, engine choice for this era.

🏆 Awards & Recognition

Recognitions

Iconic Status:

The C3 Corvette, particularly with big-block engines, is a highly desirable classic sports car and a significant cultural icon.