No more stalling at a stop or during a low rpm cruise. This guide will assist you in making a seamless LS engine swap. Install the other two "B" spacers between the brackets. For more info on LS conversions and what makes our swap kits the best in the industry click here. then tighten the locknut on the rear to 28 ft. lbs. Whether you want to do a complete LS swap, change your suspension, add a custom exhaust system, increase your power with a supercharging system, make your vehicle handle like a dream, or just keep up with more basic automotive repairs, LS Swap Masters can handle it. Thinking of installing air conditioning on your swap? There are some mounts which allow for the stock LS air conditioning compressor to be kept … If I remove the connection from the PCM and test the voltage there I get 0 if measuring to ground or 12 if measuring to Positive. I would do it if I were you. ICT Billet LS Truck R4 A/C Air Conditioner Compressor Bracket Kit SUV LSX AC (LS3 Camaro) LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L99 L33 LR4 Designed & Manufactured in the USA 551585X-3 4.7 out of 5 stars 48 $199.99 $ 199 . Most of our swap customers prefer to keep A/C on their vehicle. Your harness MAY NOT have a pin in a location I have listed having a wire. The FAST™ EZ-EFI 2.0® LS Self Tuning Engine Control Kit is the easiest way to get your LS transplant up and running without the complex PCM flashing and harness reworking required with the stock unit. 1970-81. A/C Compressor. If your project uses electric fans, begin with a PCM calibration from a vehicle that has electric fans. All the items listed below are things you will need to consider, research, and plan on having when doing an LS swap. All threaded holes in the block and cylinder head should cleaned and tapped with a thread chaser. Our first step for the swap was figuring out what LS engine to go with. Install the smaller rear bracket using 2 "A" spacers between the bracket and passenger cylinder head using two bolts and stainless washers as shown. To install the belt place a 3/8 ratchet and extension into the front of the tensioner and twist down. No room for clutch fans or large shrouds. At the moment, these trucks are relatively cheap to pick up, and can be found with full power, AC, tilt, etc. Then go back and torque each bolt to 28 ft. lbs. Small case alternators are 135 amp and lower. We have a module that will send the AC request signal to the E38 ECU and will allow you to run your A/C from the factory ECU. It includes a FAST XFI 2.0 system, an XIM Ignition Module, and all necessary plug-and-play wiring. Got $1700 for it. The PCM is sending a ground signal to the relay but the relay is not activating. Hi everyone! Start with the counter sunk bolts first, rear bracket to cylinder head, then the front bracket, and finally the compressor. Tighten all bolts to 28 ft lbs. Climate Control Fans Override. Can anybody tell me where the vacuum lines for the heater control valve plug into (inside the car.) Log in, HOW TO USE AND UPGRADE TO GM GEN III LS-SERIES POWERTRAIN CONTROL SYSTEMS, Proven Stroker Combos for Big-Inch LS Engines, GM Gen III LS PCM/ECM: Electronic Throttle Equipment Guide, How to Remove and Install Gen III LS Engines: Tips and Tricks, Gen III (3) LS 500+ Horsepower NA Street-Racer Buildup, Fuel and Spark Guide for Big-Inch LS Engines, How to Tune Supercharged and Turbocharged LS Engines, The LS Engine Family – Building Big-Inch LS Engines, Gen III LS PCM Conversion Upgrades: Projects, Lessons and Strategies, TUNING FOR SUPERCHARGED AND TURBOCHARGED LS ENGINES, LS Engine: Intro to Turbocharging and Turbochargers, LS: Forced-Induction Support and Auxiliary Components, Piston Guide for Building Big-Inch LS Engines, Induction Guide for Building Big-Inch LS Engines, Gen III (3) LS Production Parts for Performance, Gen III (3) LS 1200 Horsepower, 387-Cubic-Inch C5R Power Guide, GM Gen III LS PCM/ECM: Crankshaft and Camshaft Signals Guide, Camaro and Firebird LS Swap: Chassis and Suspension, LS Engine Rebuilds: Component Preparation Guide, Cylinder Head Options for Building Big-Inch LS Engines, Gen III (3) LS Engine Basics – Getting Started, Intro to GM’s LS Gen III and Gen IV: The Small-Block Chevy Reborn, LS ENGINE SUPERCHARGER INSTALLATION PROJECTS, The Arrival of the LS Engine – Start Your Rebuild, Choosing an LS Engine for Camaro and Firebird LS Swap, LS Engine: Intro to Supercharging and Superchargers, How to Build an LS Engine: Cylinder Block and Rotating Assembly, What You Need to Know About LS-Series Engines, Upgrading to Gen III LS-Series PCM: Air Conditioning Guide, LS ENGINE TURBOCHARGER INSTALLATION PROJECTS, HOW TO BUILD AN LS ENGINE: CYLINDER BLOCK AND ROTATING ASSEMBLY, GM LS-Series PCM/ECM: Comparing Gen III Controllers, LS SWAPS: Accessory Drives and Cooling System Guide, Camaro and Firebird LS Swap: Front-Drive Accessory Guide, Gen III (3) LS Vortec Truck Engine Buildup Guide, Ultimate LS Rectangular Port Cylinder Heads Guide, How to Build an LS Engine: Cylinder Heads, Camshafts and Induction, LS Engine Supercharger Projects: Step-by-Step, Connecting Rod Guide for Building Big-Inch LS Engines, LS Cylinder Head Supporting Components Guide, GM Gen III LS PCM/ECM: Wire Harness Selection Guide, Ultimate LS Cathedral Port Cylinder Heads Guide, Upgrading to Gen III LS-Series PCM: Signal Output Guide, LS Engine Rebuilds: Break-In and Tuning Guide, Firebird and Camaro LS Swap: Transmission Guide, GM Gen III LS PCM/ECM: How to Change the Firing Order, Engine Block Options for Building Big-Inch LS Engines, How to Control Your Gen III (3) V-8 LS Engine, LS: Pre-Installtion Guide for Turbochargers and Superchargers, Firebird and Camaro LS Swap: Fuel System Guide, GM LS-Series PCM: Understanding the Small-Block Generations, HOW TO BUILD AN LS ENGINE: HEADS, CAM AND INDUCTION, GM Gen III LS PCM/ECM: Tuning Software and Equipment, Firebird and Camaro LS Swap: Cooling System Guide, Camaro and Firebird LS Swap: Wiring Guide, 100 Horsepower Anybody Can Install in Gen 3 LS Engines, Camaro and Firebird LS Swap: Initial Start-Up Guide, Upgrading to Gen III LS-Series PCM: Sensors and Inputs Guide, LS Engine Turbocharger Projects: Step-by-Step, GM Gen III LS PCM/ECM: On-Board Diagnostics Troubleshooting, Camaro and Firebird LS Swap: Exhaust and Induction Guide, LS SWAPS: Wiring Harness and Wiring Guide, Crankshaft Guide for Building Big-Inch LS Engines, LS Cylinder Blocks Guide for High-Performance, Camaro and Firebird LS Swap: Engine and Subframe Guide, Upgrading to Gen III LS-Series PCM: Electric Fan Guide, Upgrading to Gen III LS-Series PCM: Cruise Control Guide. LS1 Swap 3.45 Dana 44. Has anyone played with cooling fan relay control? *We recommend leaving all of the bolts slightly loose until all the parts are installed. The two Spal fans are 265 watts at 1168cfm each. Since every LS engine swap is a little different and there are lot of choices to be made, you can use this guide as a reference for ideas and part numbers as you move through the process. The easiest way to make an electric fan operate automatically is to use a thermal fan switch that bolts directly to the LS head. While lifting the weight of the compressor. Yes: Climate control system (if fitted) controls Fan operation Then go back and torque each bolt to 28 ft. lbs. The PCM calibration is specific to each of these implementations. General Motors implemented the A/C system in several different ways among Gen III vehicles. Correct belt tensioning can be determined by the distance between the tensioner and idler pulleys. Both of the bolts are countersunk and thread into the rear plate. The harness will ship ASAP with tracking. We make this easy by providing a wide selection of brackets to mount your A/C compressor on trucks, cars, hotrods, etc, with options ranging from GM factory R4, BMW, Ford, Sanden 508, 7176, 708, HT6 and other types of compressors. Place the billet spacer against the front plate. For a c10 swap there are a couple things to consider when choosing the right mounts for you. Tighten tensioner bolt to 28 ft. lbs. Startup guaranteed. Fan modules include all of the necessary components to convert from a mechanical fan to an electric fan for the LS swap. I am working on a LS swap and I cannot get the cooling fans to work. .. 1982-92. Dave, I will have it on the dyno this spring. These are the RED & BLUE PCM connector pinouts that will cover 1999 to 2002 4.8/5.3/6.0. Install the smaller rear bracket using 2 "A" spacers between the bracket and passenger. The user-tunable FAST XFI 2.0 controller carries all of the usual functions for LS operation as well as fuel pump and cooling fan controls. On many LS powered cars, the factory engine control unit does a lot more than controlling the engine. I?m guessing a/c, coolant temp etc are something to do … No more forcing fans on with extra relays. Welcome to Part 3 of the LS swap in my 80 series Land Cruiser! We ran out of time this past fall to get the final tuning done. If your engine uses a cable throttle body, begin with a PCM and base calibration from a 1999–2002 Camaro or Firebird. In many cases, if you’re putting MegaSquirt on a car that came with an LS motor, we recommend installing the MegaSquirt in parallel with the stock ECU if you want these features to keep operating. LS wiring harnesses and swap kits for all Gen III and IV engines. DD-LS-R4-AC - LS R4 A/C Bracket All threaded holes in the block and cylinder head should cleaned and tapped with a thread chaser. TECH ARTICLE LS Swap into 88-98 GM Truck We have always wanted to build a 88-98 sport truck, and with the popularity of these trucks coming back, now was the perfect time. * When using small diameter power steering pulley subtract 2" from belt length. In short, the best engine for your LS or Vortec swap is the one you can afford. All bolts being installed should be lubed with a light oil or anti-seize on the bolt threads before assembly. Leave all of the bolts loose as shown. LS Swap Guide by LSX Innovations INTRODUCTION. Doing a LS swap into a "Square body" GM truck is much simpler. When I measure voltage at the relay I get 12v on both sides of the coil. Next install the top idler pulley. If you need to control an E-transmission, you can also link the XFI 2.0 to the optional FAST EZ TCU controller. Next install the front bracket using the longest socket head bolt in the top hole and 1 "B" spacer between the two brackets and one "A" spacer between the rear bracket and the cylinder head. *We recommend leaving all of the bolts slightly loose until all the parts are installed. 1-7 on axis but not description as to what they relate to. 99 The machined end fits inside the pulley. Keep in mind I have the Frontrunner System on my car and I am limited to 6.75" of space between the radiator support and the front of the AC clutch cover. Large Case alternators are 140 amp and higher. This bolt comes with a locknut and stainless washer for the rear to keep this locked into place. Joined: 12/3/2001 Posts: 2379. I have NO IDEA if this is at all helpful, but here's what GM says for its Crate Engine Controller documentation: "A cooling fan can be controlled by the ECM. When using small diameter pulleys and test fitting belts, you want as close to 2" between the two pulleys as possible. I did sell the old crate engine. 1967-69. Many modern factory ECMs turn on the fans under these conditions already. All you have to do is type “ls swap mounts” into google to see what I mean. Small case alternator (135 amp and lower)  Gates K061110, Large case alternator  (140 amp and larger)  Gates K061115, Small case alternator (135 amp and lower)  Gates K061098, Large case alternator  (140 amp and larger)  Gates K061105, Truck accessories using Dirty Dingo billet Alt/PS low power steering mount bracket-, Truck accessories using Dirty Dingo billet Alt/PS high power steering mount bracket-, Truck accessories using Dirty Dingo idler relocation bracket-, Dirty Dingo LS1 Corvette Style alternator-power steering bracket-. Air Conditioning Considerations Prior to buying a custom wire harness or doing PCM calibration work, determine if the vehicle will have air conditioning, if electric fan(s) are required when the A/C compressor is on, and if the PCM will be used to control the electric fan(s). WoW, nice to finally order a bracket and it fits PERFECT!!! These belt sizes are for using a clutch diameter of 4.33". State vs. Desired %: Selects the current state of series/parallel/discrete fan operation based on Desired %. Bottom line is not enough cooling capacity a long with inadequate fan size. BP Automotive is the only LS Swap Standalone Harness Manufacturer that offers and fully supports A/C installation and integration with the GM LS EFI systems. Place the flat aluminum spacer plate that comes with the tensioner between the tensioner and the front plate as shown. 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