The LS7 engine, with crankshaft balancer, is a balanced assembly. During the powertrain build process, balance weights may be added to the crankshaft balancer and/or flywheel, as required.
In order to maintain engine/clutch assembly balance, it may be necessary to install or remove balance weights as detailed below:
Crankshaft Balancer
| • | Existing balancer onto existing engine: The balancer position must be marked prior to removal and installed to the original position. Refer to
Crankshaft Balancer Removal
. |
Engine Flywheel
Important: The flywheel, clutch, and pressure plate are each individually balanced components and are available separately. The pressure plate mounts, or locates, onto the flywheel dowel pins in the flywheel. If the pressure plate
is not aligned properly onto the dowel pins and tightened down, the pins may bend and the plate may be incorrectly positioned, which will affect component balance. Refer to
Clutch Assembly Replacement
.
| • | Existing flywheel, clutch, and pressure plate assembly onto the existing engine: Pressure plate position to flywheel must be marked prior to removal and installed to the original position. Flywheel position to crankshaft must be marked prior to removal
and installed to the original position. Refer to
Engine Flywheel Removal
. |
| • | Existing flywheel, clutch, and pressure plate onto a new engine: Pressure plate position to flywheel must be marked prior to removal and installed to the original position. Flywheel position to crankshaft must be marked prior to removal and installed
to the similar position on the new engine. Do not remove balance weights from flywheel, if applicable. |
| • | New flywheel onto an existing engine: Install the same size balance weights into the new flywheel in the same location as the old flywheel. Install the new flywheel to a similar position on the new engine. |
| • | New flywheel, clutch, and pressure plate onto a new engine: Do not install balance weights. |
