In 152 + pages of text and black and white line drawings, David Vizard describes a step-by-step approach to extracting the maximum in horsepower and reliability from simple modifications to standard cylinder heads. In addition, he explains why these changes work and why other changes don't work. Published in 1971 by Interauto Book Company Ltd. of Middlesex, England as part of the Speedsport Series, it contains diagrams and charts invaluable to a tuner of British 60's engines. Want to improve the gas flow of your cylinder head? Better read this book first. ISBN # 0-85113-066-6.

It is no longer available new, and must be found on the used market.

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