Hey prostreet,

Not sure if it applies to '70 Chevelle, but I do know that for '69 Chevelle/El Camino that the SS was not a "type" recognized by Chevy.

Evidently you could order a car with the badges, but no way could you identify it as an SS through the VIN. I've gone through the same thing with my '69 Elky. For all I know my Elky (with SS stuff all over it, including a front grill "SS 396") originally had a 6 in it. So I sort of gave up on trying to figure it out and am just enjoying the 350 that I've got in it...

Hope this helps, maybe someone out there has a better memory/information on this question.

Later!