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LS Gen IV Engines 2005 - Present: How to Build Max Performance

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Unlock the performance potential of your LS Gen IV engine with the best products and modification procedures for a variety of applications from engine-building and LS expert Mike Mavrigian.

To make more horsepower, more air flow and fuel into the engine is needed; therefore, how to select the industry-leading aftermarket heads and port the stock heads for superior performance are comprehensively covered in LS Gen IV Engines 2005 - Present: How to Build Max Performance. The cam controls all major timing events in the engine, so determining the best cam for your engine package and performance goals is revealed. But these are just a few aspects of high-performance Gen IV engine building. Installing nitrous oxide or supercharger systems and bolting on cold-air intakes, aftermarket ignition controls, headers, and exhaust system parts are all covered in detail. The foundation of any engine build is the block, and crucial guidance for modifying stock blocks and aftermarket block upgrade advice is provided. Crankshafts, pistons and rods, valvetrain, oiling systems, intakes and fuel injection, and cooling systems are all covered so you can build a complete high-performance package.

The GM LS Gen IV engine dominates the high-performance V-8 market and is the most popular powerplant for engine swap projects. In stock trim, the Gen IV engines produce class-leading horsepower. The Gen IV's rectangular-port heads flow far more air/fuel than the Gen III cathedral-port heads. However, with the right combination of modification procedures and performance parts, you can reach almost any performance target.

Muscle car owners, LS engine builders, and many enthusiasts have migrated to the Gen IV engine platform, so clear, concise, and informative content for transforming these stock engines into top performers for a variety of applications is essential. A massive amount of aftermarket parts is available and this provides guidance and instructions for extracting top-performance from these engines. If you’re searching for an authoritative source for the best components and modifications to create the ultimate high-performance packages, then you’ve found it.

ISBN-13: 9781613253908

Media Type: Paperback

Publisher: CarTech

Publication Date: 08-09-2018

Pages: 144

Product Dimensions: 8.50(w) x 10.50(h) x 0.40(d)

Mike Mavrigian, a certified member of the National Institute of Automotive Service Excellence, has authored Modern Engine Blueprinting Techniques; Performance Exhaust Systems: How to Design, Fabricate and Install; and many other titles. He is editor-in-chief of Auto Service Professional and contributes to a number of magazines. He also owns and operates Birchwood Automotive Group, which assembles project vehicles.

Table of Contents

Acknowledgments

Part 1: LS Gen IV

Chapter 1: LS Gen IV Engine Overview

LS2 Differences

Performance Gains

Retrofitting the LS

Chapter 2: Engine Blocks

Stock Blocks

Modifying the Stock Aluminum Block

Disabling Performance-Robbing Displacement on Demand

Main Caps

Aftermarket Blocks

Chapter 3: Crankshafts and Connecting Rods

Crankshaft Reluctor Wheel

Crank Snout Length

Connecting Rods

Rod Bearings

Crank Stroke and Rod Length

Aftermarket Connecting Rods

High-Performance Crankshafts

Chapter 4: LS7, LS3, and LS9 Cylinder Heads

LS7

LS3

L92

LS9

Cylinder Head Interchangeability

Water Temp Holes

Rocker Arm Pedestal Rails

Aftermarket Performance Heads

Selecting a Cylinder Head

Chapter 5: Pistons

Piston Compression Height

Bore Size, Dome, and Compression Ratio

Skirt-to-Wall Clearance

Piston and Rod Orientation

Skirts and Major/Minor Thrust

Offset Pin

Piston Coatings

Chapter 6: Camshafts and Lifters

Camshaft Terminology

Factory Camshafts

Active Fuel Management (AFM)

Intake and Exhaust Difference

Camshaft Firing Order

Hydraulic or Solid

Cam Gears

Lifters and Lifter Guides

Chapter 7: Rocker Arms

Stock LS Rocker Arm Trunnion Upgrades

Tool Note

Aftermarket Rockers

High-Performance Rocker Arms

Chapter 8: Oiling Systems

Rear Main Seal

High-Pressure/Volume Upgrade

Dry Sump

Oil Pressure Sensor

Chapter 9: EFI and Intake Manifolds

Intake Manifolds

Throttle Body Injection

Fuel Injector Size

Low Impedance versus High Impedance

Part II: Two High-Performance LS Builds

Chapter 10: Dual-Carb LS 408

Block

Camshaft

Crankshaft

Connecting Rods

Pistons

Timing Set

Oil Pump

Cylinder Heads

Lifters

Pushrods

Water Pump

Crank Damper

Intake Manifold

Carburetors

Ignition

Our Dyno Results

Chapter 11: Dart LS Next Build

The LS Next Block

Machining the LS Next Block

Crankshaft Balancing

Pistons

Connecting Rods

Camshaft

Timing Set

Piston/Rod Assembly

Oil Pump

Oil Pan

Lifters

Crank Damper

Cylinder Head Installation

Rockers

Pushrods

Intake System

Ignition Coils

The LS Next Dyno Session

Chapter 12: Assembly Procedures

Crankshaft Installation

Cylinder Head Installation

OEM Lifter Buckets

Rear Oil Diverter

Rear Main Seal Installation

Front Cover

Valley Plate

Crank Damper/Pulley Installation

Timing Chain Damper

Connecting Rod Bolts

Changing Camshafts

Valve Cover Swap

Carb Setup on LS

Custom Cylinder Head Steam Plumbing

Hose Lengths

Appendix

Source Guide