Is there a specific model of harmonic balancer for each engine type, or can/should different ones be used depending on the appilcation?
I have a '75 Blazer with a 350 that may be developing a vibration issue that I've been told could be the harmonic balancer. However, the motor is not original and based on the engine numbers appears to be out of a '70 Impala. The motor has been rebuilt before I owned the truck, and generally runs strong. I use it to tow a 5000# boat/trailer regularly. Other than gas mileage (never above 9mpg), I've had no complaints about the way it has been running for several years until it started throwing the belts 6 months ago. As part of diagnosing that problem, the suggestion has been made to check the balancer. However, the balancer currently on the engine is a bigger diameter than the one the Chevy dealer identifies as the correct one for this engine, which supposedly would also be the same part as for the original 350 the Blazer would have come with.
Anyone have any experience dealing with the balancers?
Footin' (as in walking again!)