CarTech®
CarTech®, Inc.
39966 Grand Avenue
North Branch, MN 55056
Phone: 651-277-1200 or 800-551-4754
Fax: 651-277-1203
© 2015 by David Vizard
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without prior permission from the Publisher. All text, photographs, and artwork are the property of the Author unless otherwise noted or credited.
The information in this work is true and complete to the best of our knowledge. However, all information is presented without any guarantee on the part of the Author or Publisher, who also disclaim any liability incurred in connection with the use of the information and any implied warranties of merchantability or fitness for a particular purpose. Readers are responsible for taking suitable and appropriate safety measures when performing any of the operations or activities described in this work.
All trademarks, trade names, model names and numbers, and other product designations referred to herein are the property of their respective owners and are used solely for identification purposes. This work is a publication of CarTech, Inc., and has not been licensed, approved, sponsored, or endorsed by any other person or entity. The Publisher is not associated with any product, service, or vendor mentioned in this book, and does not endorse the products or services of any vendor mentioned in this book.
Edit by Paul Johnson
Layout by Monica Seiberlich
ISBN 978-1-61325-241-3
Item No. SA350
Library of Congress Cataloging-in-Publication Data Available
Written, edited, and designed in the U.S.A.
10 9 8 7 6 5 4 3 2 1
Title Page:
Carburetors can deliver very good results as did this BLP 4150-style carb on the street 565 engine shown here. This unit used a Dart block, with heads and intake by Brodix. Built by Throttle’s Performance of Argusville, North Dakota, this 496 cranked out a civilized 700-plus horsepower. The question we are asking here is: What would it have done if spec’d for EFI?
Back Cover Photos
Top Left:
Short of a supercharger or nitrous oxide, tapping into the big-block Chevy’s displacement potential via a stroker crank and bigger bores is the best route to high-torque output.
Top Right:
Reshaping the combustion chamber yields performance benefits. To keep the exhaust flow from going into reversion, I cut the chamber wall flatter in the area indicated to move the quench pad farther from the exhaust valve.
Bottom Left:
If you are doing a serious engine build, port matching needs to be part of your build-up plan. Note the wraparound safety glasses, ear protectors, and face mask. All are important safety equipment, so be sure to use them.
Bottom Right:
I use this Moroso degree wheel. It is one of the biggest you can get and is just right for timing in a Chevy big-block cam. It is also unique because it requires no calculations to get the cam’s degree setting in the engine. The setup here is being used to check out the rocker ratios of various designs.
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CONTENTS
Chapter 1: Displacement Decisions
Piston Wrist Pin Offset Potential
Modifications to the Bottom of the Bores
Modifications to the Lubrication System
