1. Harmonic Balancer:
* Internally balanced: The harmonic balancer will have a single, smaller diameter weight on the front of the crankshaft.
* Externally balanced: The harmonic balancer will have two larger diameter weights, one on each side of the crankshaft.
2. Flywheel/Flexplate:
* Internally balanced: The flywheel/flexplate will have a smaller diameter and may not have any balance weights at all.
* Externally balanced: The flywheel/flexplate will have a larger diameter and will have balance weights attached to the outside of the flywheel/flexplate.
3. Connecting Rods:
* Internally balanced: Connecting rods will have no balance weights.
* Externally balanced: Connecting rods will have balance weights at the bottom of the rod.
4. Crankshaft:
* Internally balanced: The crankshaft will have no balance weights.
* Externally balanced: The crankshaft will have balance weights integrated into the crankshaft itself.
Important Note: While checking the harmonic balancer is the easiest method, you may need to inspect the flywheel/flexplate or connecting rods for a more definitive answer, especially if the harmonic balancer has been replaced previously.
Additional Information:
* Generally, most 1995 Chevy 350 engines are internally balanced.
* However, some exceptions exist. For example, engines intended for high-performance applications or those equipped with specific transmissions might be externally balanced.
* Always consult a reputable repair manual or parts catalog specific to your 1995 Chevy 350 engine. They will contain specific information about balancing requirements for your particular vehicle.
If you are unsure about the balance of your engine, it is always best to consult with a qualified mechanic. They can inspect your engine and provide accurate information.
