BB engine brackets

I found this set of brackets in a box that I was going thru. I know they fit a big block but I'm unsure of the years. Are these just regular brackets from late 60's to early 70's? B and E body?

Not sure of all the years, but for sure ‘68-70 B Body big block. Identical to my BB ‘68 Roadrunner.

Thanks. I'm thinking they stayed the same until they switched to the spool mounts.

I'm thinking 66 up to 70 for sure...possibly all the way to 72 for a B body...
Maybe 70-74 for an E body...

I agree.

They did .

That said ... there is a different left side bracket for the earlier C body that was also used on 383 powered A bodies , it connects to the top front ear and wraps around the front of the block , not all blocks have the cast in nubs and not all nubs were machined for use. The 440 A bodies came with a modified version of the 383 mount.

Yep, I used one of the C body/A body type of mount in my '65 Coronet. I had to build custom mounts for it since the engine is not in the stock location.