I purchase a Mopar Performance Six Pack short block assy about seven or eight year ago. Its been sitting on a engine stand waiting for a car. Now I have a problem, I lost the information sheet that came with the engine. It was a Mopar Performance 440 Six Pack Short Block assy. This engine is now discontinued. I have no clue what Harmonic balance I should use on the engine since I don't have the information sheet that came with the engine. A stock 440 balancer, 440 6 Pack balancer? Mopar Performance 440 Balancer? Anyone who has any information on this engine any help is greatly appreciated.

 

if its a forged crank being a sixpac I'm sure it is so i would use internal balancer, if it cast crank use external balanced.