Which Harmonic Damper

[83Blzr62]

I am putting a serpentine system from a 94 on my 82 6.2 and want to buy the pulley and balancer new. I saw that there were two part numbers for the balancer. One for 82-93 and the other for 94-2000. Which one should I use and what is the difference?
Thanks,
Kyle

[john8662]

Use a 6.2L Balancer and a 6.5 crank pulley.

The harmonic balancers have a shorter shaft to take up for the reluctor wheel that's used for the electronic injection pumps on the crankshaft.

[83Blzr62]

Ok, Thanks alot. You are always a big help.