Harmonic balancer/ front cover dimensions

[buickpower]

Does anyone know the outer diameter of the stock harmonic balancer where the front crank seal rides? I don't currently have access to mine. I also need the inner diameter of the front cover where the seal is installed. If anyone knows either of these dimensions or could measure/mic them, the help would be greatly appreciated. thanks

edit: I almost forgot to ask, on aftermarket balancers, are there still the diagonal oil grooves where the seal lips ride?

 

[441120]

little help?

 

[Squid4life]

A little more info might be helpful. Are you just trying to figure out what seal to replace it with? Also, do you have a newer front cover where the seal is installed from the outside, or an original where you have to install it from the inside. I have both types of seals at home, just need to know what exactly you need. :biggrin: