I have a GM crate motor that I am rebuilding to a 383, I know GM starting putting PM rods in their crate motors a while ago. How do you tell PM LT1 rods from regulare SBC cast rods?

I purchased a set of 93 LT1 rods cheap from ebay, but, I the rods I have are PM rods, then I will be selling a set.

Thanks,

 

Take pics of them and put them up, that's the best way.

The 93 rods are not PM rods.

Bret

 

Forged have a course sand grain look and PM rods are smooth and have a wierd gray color.