How to Build LS Gen IV Performance on the Dyno. Richard Holdener

      

      CarTech®, Inc.

      838 Lake Street South

      Forest Lake, MN 55025

      Phone: [phone] or 800-551-4754

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       www.cartechbooks.com

      © 2017 by Richard Holdener

      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 978-1-61325-424-0

      Item No. SA395

      Library of Congress Cataloging-in-Publication Data

      Names: Holdener, Richard, author.

      Title: How to build LS Gen IV performance on the dyno / author, Richard Holdener.

      Description: Forest Lake, MN: CarTech, [2017]

      Identifiers: LCCN 2016043399 |

      Subjects: LCSH: Chevrolet automobile--Motors--Modification--Handbooks, manuals, etc. | Chevrolet automobile--Performance--Handbooks, manuals, etc. | Chevrolet automobile--Parts--Handbooks, manuals, etc. | General Motors automobiles--Motors--Modification--Handbooks, manuals, etc. | General Motors automobiles--Performance--Handbooks, manuals, etc. | General Motors automobiles--Parts--Handbooks, manuals, etc.

      Classification: LCC TL215.C5 H65 2017 | DDC 629.25/040288--dc23

      LC record available at https://lccn.loc.gov/2016043399

      Written, edited, and designed in the U.S.A.

      10 9 8 7 6 5 4 3 2 1

       Back Cover Photos

       Top:

       Cam swaps are one of the most popular upgrades on the an LS3, and for good reason. Tested on this LS3 crate motor with Chevy Performance CNC L92 heads, the Comp cam increased power by as much as 70 hp.

       Middle:

       An LS3 crate engine served as the test mule, and it was fitted with a set of long-tube headers, a FAST throttle body and XFI management system. The crate motor produced 493 hp and 484 lb-ft of torque with the stock heads.

       Bottom Left:

       To make a stroker combination even better, you just add boost! This 4.0L Whipple pushed power into the 4-digit range.

       Bottom Right:

       One potential weakness of the LS3 (as with all LS engines) was the factory valvesprings. Adequate for stock or low-lift applications, the stock springs should be upgraded when swapping cams.

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      CONTENTS

About the Author

Introduction

Chapter 1: Intake Manifolds

Test 1: Holley Single- vs Dual-Plane Intake on an LS3

Test 2: Fast LSXR vs Mast Carbureted Single-Plane

Test 3: Stock LS7 vs MSD Atomic for LS7, Modified LS7

Test 4: Stock LS3 vs Speedmaster IR on a Modified LS3

Test 5: Stock LS3 vs Speedmaster Fabricated Intake on a Mild LS3

Test 6: FAST Adjustable LSXR Intake on a Mild LS3

Test 7: Stock vs Kenne Bell 102-mm Throttle Body on a KB SC LS3

Test 8: Custom Dual-Plenum Adjustable-Runner Intake on a 468 Stroker

Chapter 2: Cylinder Heads

Test 1: Stock LS3 vs Chevy Performance CNC L92 on a Stock LS3

Test 2: Stock LS3 vs AFR 245 on a 408 Stroker

       Test 3: Chevy Performance vs Brodix vs LPE on an LS7 495 Stroker

       Test 4: Effect of Chamber Volume: TEA vs Speedmaster on an LS3

       Test 5: Stock LS3 vs TEA vs Speedmaster LS3 on a 468 Stroker

       Test 6: Chevy Performance vs TS vs SDPC on an LS7 495 Stroker

       Test 7: Stock LS3 vs TFS Gen X 255 on a Modified LS3

      Chapter 3: Camshafts

       Test 1: Stock LS3 vs Comp Cams 281LRR on a Modified LS3

       Test 2: Stock LS3 vs BTR Stage