1970-1975 Chevrolet By The Numbers - Colvin GM Engine ID Book
If you're chasing complete originality, Alan Colvin’s Chevrolet By The Numbers is the ultimate reference for decoding factory-correct engine and drivetrain components. This authoritative volume covers 1970–1975 Chevrolet passenger cars, including Chevelle, Camaro, Corvette, Nova, Bel Air, Monte Carlo, Impala, and El Camino.
What sets this book apart is its unprecedented use of Chevrolet’s original engineering documents, technical bulletins, and blueprints—not secondhand or speculative sources. Colvin also interviewed original GM engineers and suppliers, uncovering factory backstories and providing unmatched detail about casting numbers, part variations, and assembly line usage. Whether you're restoring a big-block SS or documenting a survivor small-block Corvette, this book is your blueprint for authenticity.
Features
• Covers 1970–1975 Chevrolet passenger cars including Corvette
• Original GM casting number data for 262, 307, 350, 400, 402, 454 engines
• 312 pages with 220 photos and technical illustrations
• Research backed by GM blueprints, service bulletins, and build sheets
• Softcover, 8 3/8 in. x 11 in.
• GM Part No. 24502564
Because Details Matter
Whether you’re building a concours restoration or just love decoding Chevy’s engineering history, this book takes the guesswork out of drivetrain originality. Trusted by restorers, judged by purists, and respected by GM historians.
Also known under these part numbers: (For reference only)