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

By Mike Mavrigian
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Front Cover
Rear Cover
Stock image only. Actual cover art may differ.
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 unlock the performance potential of the Gen IV engines and reach almost any performance target.

Contents:
Acknowledgments

Part 1: LS Gen IV
LS Gen IV Engine Overview
LS2 Differences
Performance Gains
Retrofitting the LS

Engine Blocks
Stock Blocks
Modifying the Stock Aluminum Block
Disabling Performance-Robbing Displacement on Demand
Main Caps
Aftermarket Blocks

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

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

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

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

Rocker Arms
Stock LS Rocker Arm Trunnion Upgrades
Tool Note
Aftermarket Rockers
High-Performance Rocker Arms

Oiling Systems
Rear Main Seal
High-Pressure/Volume Upgrade
Dry Sump
Oil Pressure Sensor

EFI and Intake Manifolds
Intake Manifolds
Throttle Body Injection
Fuel Injector Size
Low Impedance versus High Impedance

Part II: Two High-Performance LS Builds
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

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

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

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.
Publisher
Cartech, Inc.
ISBN
1613253907
ISBN-13
9781613253908
Format
Paperback: 144 pages
Published
2018

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