As simple as it may seem, just getting the Gen III V-8 out of a production vehicle can be frustrating if you haven’t done it before. Because of this, the following chapter covers as much detail as possible with visual support to show how to remove and reinstall (R & R) a Gen III V-8 from the vehicle it was shipped in. The tips and tricks listed here are a little from the GM manuals, but mostly from the technicians doing this work every day. These techs have discovered ways to simplify the task of pulling a Gen III V-8 engine while minimizing the amount of work and the possibility of damage to the vehicle components at the same time. These steps are offered as suggestions to improve the journey of separating the engine from the vehicle. If anything, using this info will help you look like you know what the hell you’re doing when your friends are around.
This Tech Tip is From the Full Book, HOW TO BUILD HIGH-PERFORMANCE CHEVY LS1/LS6 V-8S. For a comprehensive guide on this entire subject you can visit this link:
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The R & R of a Gen III V-8 from the Camaro/Firebird (F-car) and Corvette (Y-car) is more involved than the R and R on the full-size trucks (called the 800- series internally within GM). This is because the engine should come out of the vehicle from underneath on the F- and Y-car. GM installs the engines from underneath on the cars, so that’s what you need to do, too. For all of these vehicles, including the trucks, being able to put the vehicle on a lift will make the R & R job much easier.
As you can see from the 100+ images used to document each of the three different platforms, the process is thoroughly detailed here visually to make it easy for you to accomplish.
Removing a Gen III V-8 from an F-Car
Having the engine come out from under a Camaro and Firebird seems like a very difficult process when you haven’t done it before. But after going through it, you’ll see that dropping the engine out from under the car is a straightforward process that doesn’t require all the finagling and finesse usually required to negotiate an engine out of and back into an engine bay from the top. The only major hurdle with the dropout process is that now a vehicle lift is required to perform this task instead of just an engine hoist.
Removing a Gen III V-8 from a Corvette
As with the removal and replacement notes on the Camaro/Firebird, the tips shown here are what the pros are doing in the field. Some of the steps shown in the F-car process are similar to those for the Corvette and will not be supported by photography here, but they will be noted so you can refer to the F-car pictures for reference.
Removing a Gen III from a Full-Size Truck or SUV
Pulling a Gen III V-8 from a GM fullsizetruck or SUV will probably look familiar to those that have pulled engines from other full-frame vehicles. That’s because the truck engines come out the top of the engine bay and over the radiator core support.
Even with that traditional nature, there are plenty of sensors, hoses, and other specific tips and tricks shown here that will make the job go easier when it comes time to pull your Gen III.
Running a Gen III V-8 in a Pre-Gen III V-8 Vehicle
The Gen III LS1 V-8 is a great engine to install in past model vehicles because it is compact, has a simple external shape, closely mimics a Gen I/II smallblock Chevy in its external dimensions, and it looks cool. The photos show an LS6 installed in a late-model Chevy S10 pickup. To install this engine, the owner had to build small engine mount adapters, which are also available from multiple sources. Headers needed to be fabbed up, along with a larger radiator. The inlet tube was fabricated and an open element air filter connected to the end. The engine runs on a GM controller, but the calibration has been altered using LS1Edit to make it work in the S10.
This little S10 is a hoot to drive, yet it idles like a stocker, gets 20 mpg, and is easy to service. This setup is so straightforward, it’s shocking GM didn’t build the thing in the first place.
Written by Will Handzel and Posted with Permission of CarTechBooks