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The following was published by Automotive News. Dale Jewett on May 9, 2005.

The process of building an LS7 engine begins with selecting the engine block. The block is cleaned of sediment and placed on a cart that will be its base during the four-hour assembly.

The first part to be installed is the camshaft. The part is lubed with oil, which is the only messy part of the process. The camshaft slides into the block and is held in place by a retainer.

Bar-code scans record each step and set the torque limit on an electric wrench for each operation. Also, the torque value for each bolt is recorded on a master file. And each bolt is marked with a paint dot after being tightened to the specified torque setting.

Next the valve lifters must be pressed into the block by hand.

After the camshaft is installed, the block is mounted on its engine stand. Then crankshaft main bearing caps are removed and marked, and bearings are pressed into place.

Then the crankshaft is installed. Next the bearing caps are replaced before a computer-controlled machine tightens the bolts evenly.

The timing gears and chain then are installed on the front of engine. After that, bearings are put in each of the piston connecting rods. Then the pistons are installed one at a time - and carefully.

Then it's time for the oil pump to be mounted and for the oil pan to be attached. Gauges are used to make sure the oil pump and pan are aligned properly with the block. If not, leaks can develop where the transmission tube joins the rear of the engine.

Assemblers have created plastic templates that lay on top of the enginer to show the proper tightening sequence of bolts for the front cover, cylinder heads and valve covers. In some cases bolts are tightened, loosened and tightened again to ensure a proper fit.

Next up is installation of the cylinder heads, which come from the supplier assembled with valves and springs.

The operator installs guide pins in the block, lays the gasket in place and then places the head onto the engine block. Then the pushrods are installed, followed by the rocker arms and valve covers. This marks the turnaround point on the U-shaped line.

Then it's time to install the exhaust manifolds, engine mounts and spark plugs. This is followed by installation of the intake manifold knock sensors. Then the engine goes to a harmonic balancer. Coil assemblies and plug wires are installed.

Next to be installed are the flywheel and clutch. Then the engine will be run for a few minutes for a balance test. Special weights are added to the front crank pulley to even out any minute imbalances.

When it passes inspection, the engine is crated and shipped to Bowling Green, Ky., for installation in a vehicle.



Note: Thanks to Mrs Zippy for typing this! :cheers: It would have taken me at least an hour.
 

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Very informative read! Thanks!
 

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Very cool...thanks! :coo:
 

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I'm a technical person, so I dig this stuff!

Alex
 

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Interesting indeed.
 

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Thanks for sharing!! :ity: :ity:
 
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