NCRS Corvette Judging Manuals

Contributions by Tom Russo

The first major revision of the 1975-77 NCRS Technical Information Manual & Judging Guide was announced in the Winter 2020 issue of the Corvette Restorer. The 258 page manual includes over 670 colored photos on laminated pages along with detailed sectional table of contents to make this guide truly a field-ready judging manual. For example, plunger switches are used to operate the alarm system and detailed with illustrations in the interior section; the section describes switch variations applicable throughout the C3 production models.
It was during this production period when Corvette production was dramatic, increasing by 21% from 1975 to 1976, and increasing by 28% from 1976 to 1977. Units (cars) built per day increased to 142 in 1977 from 85 in 1973, justifying the cost to build a new assembly plant. As a result, many owners reported parts previously tagged for the next model year, showing up on current build models. Changes of this sort are documented in the related AIM and the sheet marked ROLLING MODEL CHANGE
While the layout is typical of NCRS judging manuals, the 1975-77 follows the format rolled out in C3 manuals, continuing the field-friendly format that includes at the front of each section both a detailed Table of Contents and List of Tables. The new manual also incorporates the role that build sheets play in reconciling mechanical broadcast codes with those printed on the buildsheet.
A major revision of the 1973-74 NCRS Technical Information Manual & Judging Guide was announced in the Winter 2019 issue of the Corvette Restorer. The 258 page manual includes over 670 colored photos on laminated pages along with detailed sectional table of contents to make this guide truly a field-ready judging manual. The article includes an excerpt regarding the plunger switches from the interior and chassis section that is applicable throughout the C3 production models.
While the layout is typical of any NCRS judging manual, the 1973-74 adopts a format to shape it as a fieldfriendly judging guide that includes at the front of each section both a detailed Table of Contents and List of Tables. The new manual also incorporates the role that build sheets play in reconciling mechanical broadcast codes with those printed on the buildsheet.
Yet to be released, is the newest edition of the 1978-79 NCRS technical manual. It features over 670 photographs, nearly 100 tables and 262 pages of illustrative pages that provides owners with the technical details inherent to 1978-79 owners, whether its operations, interior, exterior, mechanical or chassis.
The layout is typical of NCRS judging manuals, the 1978-79 follows the format rolled out in C3 manuals, continuing the field-friendly format that includes at the front of each section both a detailed Table of Contents and List of Tables. The new edition also incorporates the role that build sheets play in Corvette production; describing how mechanical broadcast codes reconcile with those on the buildsheet.
This edition also incorporates a unique feature that illustrates factory application of paint. The graphic shows where paint, and subsequently polish, was emphasized while demonstrating where polishing was minimal. Understood, is that restorers may wish to replicate original finishes while others look to improve factory methods

1975–1977 NCRS Judging Manual (3rd Edition)

Available at

1973–1974 NCRS Judging Manual (3rd Edition)

Available at