Forgot you have to be a member to see the pics. Sorry.
TJ made 'em bigger. So, if you click on the pics you can see the numbers. Some are clear. But I can't make out some in the 2nd pic. Looks like it could be EP11, ED11, EPE1, EDE1, EPF1, EDF1. Or that last digit may not be a 1. May be an L. One guy on FB said it's an Edelbrock cam. I suppose that's because he thinks those letters are supposed to be EDEL. I suppose that could be. I think they only sell 2 Pontiac cams.
The 2157 looks similar to the Summit 2800. The 7157 is an 041 clone.
https://www.summitracing.com/parts/e...w/make/pontiac
https://www.summitracing.com/parts/e...w/make/pontiac
Looks like cam companies would somehow insure that ID numbers were readable & permanent. How tuff could that be ?